字符串

介绍
可用的方法

介绍

Laravel 提供了多种用于操作字符串值的函数。其中许多函数被框架自身使用；不过，如果你觉得方便，也可以在自己的应用中使用它们。

可用的方法

字符串

__
class_basename
e
preg_replace_array
Str::after
Str::afterLast
Str::apa
Str::ascii
Str::before
Str::beforeLast
Str::between
Str::betweenFirst
Str::camel
Str::charAt
Str::chopStart
Str::chopEnd
Str::contains
Str::containsAll
Str::doesntContain
Str::deduplicate
Str::endsWith
Str::excerpt
Str::finish
Str::headline
Str::inlineMarkdown
Str::is
Str::isAscii
Str::isJson
Str::isUlid
Str::isUrl
Str::isUuid
Str::kebab
Str::lcfirst
Str::length
Str::limit
Str::lower
Str::markdown
Str::mask
Str::orderedUuid
Str::padBoth
Str::padLeft
Str::padRight
Str::password
Str::plural
Str::pluralStudly
Str::position
Str::random
Str::remove
Str::repeat
Str::replace
Str::replaceArray
Str::replaceFirst
Str::replaceLast
Str::replaceMatches
Str::replaceStart
Str::replaceEnd
Str::reverse
Str::singular
Str::slug
Str::snake
Str::squish
Str::start
Str::startsWith
Str::studly
Str::substr
Str::substrCount
Str::substrReplace
Str::swap
Str::take
Str::title
Str::toBase64
Str::transliterate
Str::trim
Str::ltrim
Str::rtrim
Str::ucfirst
Str::ucsplit
Str::upper
Str::ulid
Str::unwrap
Str::uuid
Str::uuid7
Str::wordCount
Str::wordWrap
Str::words
Str::wrap
str
trans
trans_choice

sunny123456 翻译于

由 gyp719 审阅

Fluent Strings （流式字符串）

after
afterLast
apa
append
ascii
basename
before
beforeLast
between
betweenFirst
camel
charAt
classBasename
chopStart
chopEnd
contains
containsAll
deduplicate
dirname
endsWith
exactly
excerpt
explode
finish
headline
inlineMarkdown
is
isAscii
isEmpty
isNotEmpty
isJson
isUlid
isUrl
isUuid
kebab
lcfirst
length
limit
lower
markdown
mask
match
matchAll
isMatch
newLine
padBoth
padLeft
padRight
pipe
plural
position
prepend
remove
repeat
replace
replaceArray
replaceFirst
replaceLast
replaceMatches
replaceStart
replaceEnd
scan
singular
slug
snake
split
squish
start
startsWith
stripTags
studly
substr
substrReplace
swap
take
tap
test
title
toBase64
toHtmlString
toUri
transliterate
trim
ltrim
rtrim
ucfirst
ucsplit
unwrap
upper
when
whenContains
whenContainsAll
whenEmpty
whenNotEmpty
whenStartsWith
whenEndsWith
whenExactly
whenNotExactly
whenIs
whenIsAscii
whenIsUlid
whenIsUuid
whenTest
wordCount
words
wrap

Strings （字符串）

`__()`

__ 函数会使用你的语言文件翻译给定的翻译字符串或翻译键：

echo __('Welcome to our application');

echo __('messages.welcome');

无与伦比翻译于

如果指定的翻译字符串或键不存在，__ 函数将返回给定的值。因此，使用上面的示例，如果该翻译键不存在，__ 函数将返回 messages.welcome。

`class_basename()`

class_basename 函数返回给定类的类名，并移除类的命名空间：

$class = class_basename('Foo\Bar\Baz');

// Baz

`e()`

e 函数运行 PHP 的 htmlspecialchars 函数，默认将 double_encode 选项设置为 true：

echo e('<html>foo</html>');

// &lt;html&gt;foo&lt;/html&gt;

`preg_replace_array()`

preg_replace_array 函数使用数组按顺序替换字符串中的给定模式：

$string = 'The event will take place between :start and :end';

$replaced = preg_replace_array('/:[a-z_]+/', ['8:30', '9:00'], $string);

// The event will take place between 8:30 and 9:00

`Str::after()`

Str::after 方法返回字符串中给定值之后的所有内容。如果值在字符串中不存在，则返回整个字符串：

use Illuminate\Support\Str;

$slice = Str::after('This is my name', 'This is');

// ' my name'

`Str::afterLast()`

Str::afterLast 方法返回字符串中给定值最后一次出现之后的所有内容。如果值在字符串中不存在，则返回整个字符串：

use Illuminate\Support\Str;

$slice = Str::afterLast('App\Http\Controllers\Controller', '\\');

// 'Controller'

slowlyo 翻译于

`Str::apa()`

Str::apa 方法会将给定字符串转换为 标题格式 (title case)，
遵循 APA 指南：

use Illuminate\Support\Str;

$title = Str::apa('Creating A Project');

// 'Creating a Project'

`Str::ascii()`

Str::ascii 方法会尝试将字符串 音译为 ASCII 值：

use Illuminate\Support\Str;

$slice = Str::ascii('û');

// 'u'

`Str::before()`

Str::before 方法返回字符串中 指定值之前的所有内容：

use Illuminate\Support\Str;

$slice = Str::before('This is my name', 'my name');

// 'This is '

`Str::beforeLast()`

Str::beforeLast 方法返回字符串中 最后一次出现指定值之前的所有内容：

use Illuminate\Support\Str;

$slice = Str::beforeLast('This is my name', 'is');

// 'This '

`Str::between()`

Str::between 方法返回字符串中 两个值之间的部分内容：

use Illuminate\Support\Str;

$slice = Str::between('This is my name', 'This', 'name');

// ' is my '

`Str::betweenFirst()`

Str::betweenFirst 方法返回字符串中 两个值之间最小可能的部分内容：

use Illuminate\Support\Str;

$slice = Str::betweenFirst('[a] bc [d]', '[', ']');

// 'a'

`Str::camel()`

Str::camel 方法会将给定字符串转换为 camelCase 格式：

use Illuminate\Support\Str;

$converted = Str::camel('foo_bar');

// 'fooBar'

无与伦比翻译于

`Str::charAt()`

Str::charAt 方法返回指定索引处的字符。如果索引超出范围，则返回 false：

use Illuminate\Support\Str;

$character = Str::charAt('This is my name.', 6);

// 's'

`Str::chopStart()`

Str::chopStart 方法会移除字符串开头第一次出现的给定值，前提是该值确实出现在字符串的开头：

use Illuminate\Support\Str;

$url = Str::chopStart('https://laravel.com', 'https://');

// 'laravel.com'

你也可以将数组作为第二个参数传入。
如果字符串是以数组中的任意一个值开头，那么该值会被移除：

use Illuminate\Support\Str;

$url = Str::chopStart('http://laravel.com', ['https://', 'http://']);

// 'laravel.com'

`Str::chopEnd()`

Str::chopEnd 方法会移除字符串结尾最后一次出现的给定值，前提是该值确实出现在字符串的结尾：

use Illuminate\Support\Str;

$url = Str::chopEnd('app/Models/Photograph.php', '.php');

// 'app/Models/Photograph'

你也可以将数组作为第二个参数传入。
如果字符串是以数组中的任意一个值结尾，那么该值会被移除：

use Illuminate\Support\Str;

$url = Str::chopEnd('laravel.com/index.php', ['/index.html', '/index.php']);

// 'laravel.com'

`Str::contains()`

Str::contains 方法用于判断给定字符串是否包含指定的值。
默认情况下，该方法区分大小写：

use Illuminate\Support\Str;

$contains = Str::contains('This is my name', 'my');

// true

无与伦比翻译于

你也可以传递一个值数组，用来判断给定字符串是否包含数组中的任意值：

use Illuminate\Support\Str;

$contains = Str::contains('This is my name', ['my', 'foo']);

// true

你可以通过将 ignoreCase 参数设置为 true 来禁用大小写敏感：

use Illuminate\Support\Str;

$contains = Str::contains('This is my name', 'MY', ignoreCase: true);

// true

`Str::containsAll()`

Str::containsAll 方法用于判断给定字符串是否包含指定数组中的所有值：

use Illuminate\Support\Str;

$containsAll = Str::containsAll('This is my name', ['my', 'name']);

// true

你可以通过将 ignoreCase 参数设置为 true 来禁用大小写敏感：

use Illuminate\Support\Str;

$containsAll = Str::containsAll('This is my name', ['MY', 'NAME'], ignoreCase: true);

// true

`Str::doesntContain()`

Str::doesntContain 方法用于判断给定字符串不包含指定的值。
默认情况下，该方法区分大小写：

use Illuminate\Support\Str;

$doesntContain = Str::doesntContain('This is name', 'my');

// true

你也可以传递一个值数组，用来判断给定字符串是否不包含数组中的任意值：

use Illuminate\Support\Str;

$doesntContain = Str::doesntContain('This is name', ['my', 'foo']);

// true

你可以通过将 ignoreCase 参数设置为 true 来禁用大小写敏感：

use Illuminate\Support\Str;

$doesntContain = Str::doesntContain('This is name', 'MY', ignoreCase: true);

// true

`Str::deduplicate()`

Str::deduplicate 方法会将字符串中某个字符的连续出现替换为该字符的单个实例。
默认情况下，该方法会对空格进行去重：

use Illuminate\Support\Str;

$result = Str::deduplicate('The   Laravel   Framework');

// The Laravel Framework

无与伦比翻译于

你可以通过在方法中传递第二个参数来指定需要去重的字符：

use Illuminate\Support\Str;

$result = Str::deduplicate('The---Laravel---Framework', '-');

// The-Laravel-Framework

`Str::endsWith()`

Str::endsWith 方法用于判断给定字符串是否以指定的值结尾：

use Illuminate\Support\Str;

$result = Str::endsWith('This is my name', 'name');

// true

你也可以传递一个值数组，用来判断给定字符串是否以数组中的任意一个值结尾：

use Illuminate\Support\Str;

$result = Str::endsWith('This is my name', ['name', 'foo']);

// true

$result = Str::endsWith('This is my name', ['this', 'foo']);

// false

`Str::excerpt()`

Str::excerpt 方法会从给定字符串中提取包含指定短语的片段，并截取该短语第一次出现的位置附近的内容：

use Illuminate\Support\Str;

$excerpt = Str::excerpt('This is my name', 'my', [
    'radius' => 3
]);

// '...is my na...'

radius 选项（默认值为 100）允许你定义在截取字符串时短语前后各显示多少个字符。

此外，你还可以使用 omission 选项定义在截取字符串的前后所附加的内容：

use Illuminate\Support\Str;

$excerpt = Str::excerpt('This is my name', 'name', [
    'radius' => 3,
    'omission' => '(...) '
]);

// '(...) my name'

`Str::finish()`

Str::finish 方法会在字符串末尾追加一个指定值的单个实例（如果该字符串尚未以该值结尾）：

use Illuminate\Support\Str;

$adjusted = Str::finish('this/string', '/');

// this/string/

$adjusted = Str::finish('this/string/', '/');

// this/string/

无与伦比翻译于

`Str::headline()`

Str::headline 方法会将由大小写、连字符或下划线分隔的字符串转换为空格分隔的字符串，并将每个单词的首字母大写：

use Illuminate\Support\Str;

$headline = Str::headline('steve_jobs');

// Steve Jobs

$headline = Str::headline('EmailNotificationSent');

// Email Notification Sent

`Str::inlineMarkdown()`

Str::inlineMarkdown 方法使用 CommonMark 将 GitHub 风格的 Markdown 转换为 行内 HTML。
不过，与 markdown 方法不同，它不会将所有生成的 HTML 包裹在块级元素中：

use Illuminate\Support\Str;

$html = Str::inlineMarkdown('**Laravel**');

// <strong>Laravel</strong>

Markdown 安全性

默认情况下，Markdown 支持原始 HTML，这在处理用户输入时可能导致跨站脚本攻击（XSS）漏洞。
根据 CommonMark 安全文档，你可以使用 html_input 选项来转义或移除原始 HTML，
并通过 allow_unsafe_links 选项指定是否允许不安全的链接。
如果你需要允许部分原始 HTML，应当在编译后的 Markdown 上再使用 HTML Purifier 进行过滤：

use Illuminate\Support\Str;

Str::inlineMarkdown('Inject: <script>alert("Hello XSS!");</script>', [
    'html_input' => 'strip',
    'allow_unsafe_links' => false,
]);

// Inject: alert(&quot;Hello XSS!&quot;);

`Str::is()`

Str::is 方法用于判断给定字符串是否与指定模式匹配。
星号 * 可以作为通配符使用：

use Illuminate\Support\Str;

$matches = Str::is('foo*', 'foobar');

// true

$matches = Str::is('baz*', 'foobar');

// false

无与伦比翻译于

你可以通过将 ignoreCase 参数设置为 true 来禁用大小写敏感：

use Illuminate\Support\Str;

$matches = Str::is('*.jpg', 'photo.JPG', ignoreCase: true);

// true

`Str::isAscii()`

Str::isAscii 方法用于判断给定字符串是否是 7 位 ASCII：

use Illuminate\Support\Str;

$isAscii = Str::isAscii('Taylor');

// true

$isAscii = Str::isAscii('ü');

// false

`Str::isJson()`

Str::isJson 方法用于判断给定字符串是否是合法的 JSON：

use Illuminate\Support\Str;

$result = Str::isJson('[1,2,3]');

// true

$result = Str::isJson('{"first": "John", "last": "Doe"}');

// true

$result = Str::isJson('{first: "John", last: "Doe"}');

// false

`Str::isUrl()`

Str::isUrl 方法用于判断给定字符串是否是合法的 URL：

use Illuminate\Support\Str;

$isUrl = Str::isUrl('http://example.com');

// true

$isUrl = Str::isUrl('laravel');

// false

isUrl 方法默认会将多种协议视为合法。
不过，你可以通过向 isUrl 方法传递协议数组来指定哪些协议是合法的：

$isUrl = Str::isUrl('http://example.com', ['http', 'https']);

`Str::isUlid()`

Str::isUlid 方法用于判断给定字符串是否是合法的 ULID：

use Illuminate\Support\Str;

$isUlid = Str::isUlid('01gd6r360bp37zj17nxb55yv40');

// true

$isUlid = Str::isUlid('laravel');

// false

`Str::isUuid()`

Str::isUuid 方法用于判断给定字符串是否是合法的 UUID：

use Illuminate\Support\Str;

$isUuid = Str::isUuid('a0a2a2d2-0b87-4a18-83f2-2529882be2de');

// true

$isUuid = Str::isUuid('laravel');

// false

无与伦比翻译于

`Str::kebab()`

Str::kebab 方法将给定字符串转换为 kebab-case（短横线分隔的小写格式）：

use Illuminate\Support\Str;

$converted = Str::kebab('fooBar');

// foo-bar

`Str::lcfirst()`

Str::lcfirst 方法返回首字母小写的字符串：

use Illuminate\Support\Str;

$string = Str::lcfirst('Foo Bar');

// foo Bar

`Str::length()`

Str::length 方法返回给定字符串的长度：

use Illuminate\Support\Str;

$length = Str::length('Laravel');

// 7

`Str::limit()`

Str::limit 方法会将给定字符串截断为指定长度：

use Illuminate\Support\Str;

$truncated = Str::limit('The quick brown fox jumps over the lazy dog', 20);

// The quick brown fox...

你可以向方法传递第三个参数，用来修改截断字符串后追加的内容：

$truncated = Str::limit('The quick brown fox jumps over the lazy dog', 20, ' (...)');

// The quick brown fox (...)

如果希望在截断时保留完整的单词，可以使用 preserveWords 参数。
当该参数为 true 时，字符串会在最近的完整单词边界处被截断：

$truncated = Str::limit('The quick brown fox', 12, preserveWords: true);

// The quick...

`Str::lower()`

Str::lower 方法将给定字符串转换为小写：

use Illuminate\Support\Str;

$converted = Str::lower('LARAVEL');

// laravel

`Str::markdown()`

Str::markdown 方法使用 CommonMark 将 GitHub 风格的 Markdown 转换为 HTML：

use Illuminate\Support\Str;

$html = Str::markdown('# Laravel');

// <h1>Laravel</h1>

$html = Str::markdown('# Taylor <b>Otwell</b>', [
    'html_input' => 'strip',
]);

// <h1>Taylor Otwell</h1>

无与伦比翻译于

Markdown 安全性

默认情况下，Markdown 支持原始 HTML，当与原始用户输入一起使用时，会暴露跨站脚本（XSS）漏洞。根据 CommonMark 安全性文档，你可以使用 html_input 选项来转义或去除原始 HTML，并使用 allow_unsafe_links 选项来指定是否允许不安全的链接。如果你需要允许一些原始 HTML，你应该将已编译的 Markdown 通过一个 HTML Purifier：

use Illuminate\Support\Str;

Str::markdown('Inject: <script>alert("Hello XSS!");</script>', [
    'html_input' => 'strip',
    'allow_unsafe_links' => false,
]);

// <p>Inject: alert(&quot;Hello XSS!&quot;);</p>

`Str::mask()`

Str::mask 方法用一个重复的字符掩盖字符串的一部分，可以用来模糊处理字符串的片段，比如电子邮件地址和电话号码：

use Illuminate\Support\Str;

$string = Str::mask('taylor@example.com', '*', 3);

// tay***************

如果需要，你可以将一个负数作为第三个参数传给 mask 方法，这会指示该方法从字符串末尾给定的距离处开始掩盖：

$string = Str::mask('taylor@example.com', '*', -15, 3);

// tay***@example.com

`Str::orderedUuid()`

Str::orderedUuid 方法生成一个“时间戳优先”的 UUID，它可以高效地存储在一个有索引的数据库列中。使用此方法生成的每个 UUID 将会排在之前使用该方法生成的 UUID 之后：

use Illuminate\Support\Str;

return (string) Str::orderedUuid();

无与伦比翻译于

`Str::padBoth()`

Str::padBoth 方法封装了 PHP 的 str_pad 函数，在字符串的两边用另一个字符串填充，直到最终字符串达到所需的长度：

use Illuminate\Support\Str;

$padded = Str::padBoth('James', 10, '_');

// '__James___'

$padded = Str::padBoth('James', 10);

// '  James   '

`Str::padLeft()`

Str::padLeft 方法封装了 PHP 的 str_pad 函数，在字符串的左边用另一个字符串填充，直到最终字符串达到所需的长度：

use Illuminate\Support\Str;

$padded = Str::padLeft('James', 10, '-=');

// '-=-=-James'

$padded = Str::padLeft('James', 10);

// '     James'

`Str::padRight()`

Str::padRight 方法封装了 PHP 的 str_pad 函数，在字符串的右边用另一个字符串填充，直到最终字符串达到所需的长度：

use Illuminate\Support\Str;

$padded = Str::padRight('James', 10, '-');

// 'James-----'

$padded = Str::padRight('James', 10);

// 'James     '

`Str::password()`

Str::password 方法可用于生成一个给定长度的安全随机密码。密码将由字母、数字、符号和空格的组合构成。默认情况下，密码长度为 32 个字符：

use Illuminate\Support\Str;

$password = Str::password();

// 'EbJo2vE-AS:U,$%_gkrV4n,q~1xy/-_4'

$password = Str::password(12);

// 'qwuar>#V|i]N'

`Str::plural()`

Str::plural 方法将一个单数单词字符串转换为它的复数形式。此函数支持 Laravel 复数化工具所支持的任何语言：

use Illuminate\Support\Str;

$plural = Str::plural('car');

// cars

$plural = Str::plural('child');

// children

无与伦比翻译于

你可以提供一个整数作为函数的第二个参数，以获取字符串的单数形式或复数形式：

use Illuminate\Support\Str;

$plural = Str::plural('child', 2);

// children

$singular = Str::plural('child', 1);

// child

`Str::pluralStudly()`

Str::pluralStudly 方法将一个以驼峰格式（Studly Caps Case）编写的单数单词字符串转换为其复数形式。此函数支持 Laravel 复数化工具所支持的任何语言：

use Illuminate\Support\Str;

$plural = Str::pluralStudly('VerifiedHuman');

// VerifiedHumans

$plural = Str::pluralStudly('UserFeedback');

// UserFeedback

你可以提供一个整数作为函数的第二个参数，以获取字符串的单数形式或复数形式：

use Illuminate\Support\Str;

$plural = Str::pluralStudly('VerifiedHuman', 2);

// VerifiedHumans

$singular = Str::pluralStudly('VerifiedHuman', 1);

// VerifiedHuman

`Str::position()`

Str::position 方法返回子字符串在字符串中第一次出现的位置。如果子字符串在给定字符串中不存在，则返回 false：

use Illuminate\Support\Str;

$position = Str::position('Hello, World!', 'Hello');

// 0

$position = Str::position('Hello, World!', 'W');

// 7

`Str::random()`

Str::random 方法生成指定长度的随机字符串。此函数使用 PHP 的 random_bytes 函数：

use Illuminate\Support\Str;

$random = Str::random(40);

在测试过程中，伪造 Str::random 方法返回的值可能会很有用。为此，你可以使用 createRandomStringsUsing 方法：

Str::createRandomStringsUsing(function () {
    return 'fake-random-string';
});

无与伦比翻译于

你可以通过调用 createRandomStringsNormally 方法来让 random 方法恢复正常生成随机字符串：

Str::createRandomStringsNormally();

`Str::remove()`

Str::remove 方法从字符串中移除指定的值或值数组：

use Illuminate\Support\Str;

$string = 'Peter Piper picked a peck of pickled peppers.';

$removed = Str::remove('e', $string);

// Ptr Pipr pickd a pck of pickld ppprs.

你也可以向 remove 方法传递第三个参数 false，在移除字符串时忽略大小写。

`Str::repeat()`

Str::repeat 方法重复给定的字符串：

use Illuminate\Support\Str;

$string = 'a';

$repeat = Str::repeat($string, 5);

// aaaaa

`Str::replace()`

Str::replace 方法替换字符串中的指定内容：

use Illuminate\Support\Str;

$string = 'Laravel 11.x';

$replaced = Str::replace('11.x', '12.x', $string);

// Laravel 12.x

replace 方法也接受一个 caseSensitive 参数。默认情况下，replace 方法区分大小写：

Str::replace('Framework', 'Laravel', caseSensitive: false);

`Str::replaceArray()`

Str::replaceArray 方法使用数组顺序依次替换字符串中的指定值：

use Illuminate\Support\Str;

$string = 'The event will take place between ? and ?';

$replaced = Str::replaceArray('?', ['8:30', '9:00'], $string);

// The event will take place between 8:30 and 9:00

`Str::replaceFirst()`

Str::replaceFirst 方法替换字符串中第一次出现的指定值：

use Illuminate\Support\Str;

$replaced = Str::replaceFirst('the', 'a', 'the quick brown fox jumps over the lazy dog');

// a quick brown fox jumps over the lazy dog

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`Str::replaceLast()`

Str::replaceLast 方法替换字符串中最后一次出现的指定值：

use Illuminate\Support\Str;

$replaced = Str::replaceLast('the', 'a', 'the quick brown fox jumps over the lazy dog');

// the quick brown fox jumps over a lazy dog

`Str::replaceMatches()`

Str::replaceMatches 方法将匹配给定模式的字符串部分替换为指定的替换字符串：

use Illuminate\Support\Str;

$replaced = Str::replaceMatches(
    pattern: '/[^A-Za-z0-9]++/',
    replace: '',
    subject: '(+1) 501-555-1000'
)

// '15015551000'

replaceMatches 方法也可以接受一个闭包函数，闭包会对每个匹配的字符串部分调用，你可以在闭包中执行替换逻辑并返回替换后的值：

use Illuminate\Support\Str;

$replaced = Str::replaceMatches('/\d/', function (array $matches) {
    return '['.$matches[0].']';
}, '123');

// '[1][2][3]'

`Str::replaceStart()`

Str::replaceStart 方法仅在给定值出现在字符串开头时替换第一次出现的值：

use Illuminate\Support\Str;

$replaced = Str::replaceStart('Hello', 'Laravel', 'Hello World');

// Laravel World

$replaced = Str::replaceStart('World', 'Laravel', 'Hello World');

// Hello World

`Str::replaceEnd()`

Str::replaceEnd 方法仅在给定值出现在字符串结尾时替换最后一次出现的值：

use Illuminate\Support\Str;

$replaced = Str::replaceEnd('World', 'Laravel', 'Hello World');

// Hello Laravel

$replaced = Str::replaceEnd('Hello', 'Laravel', 'Hello World');

// Hello World

无与伦比翻译于

`Str::reverse()`

The Str::reverse method reverses the given string:

use Illuminate\Support\Str;

$reversed = Str::reverse('Hello World');

// dlroW olleH

`Str::singular()`

The Str::singular method converts a string to its singular form. This function supports any of the languages support by Laravel's pluralizer:

use Illuminate\Support\Str;

$singular = Str::singular('cars');

// car

$singular = Str::singular('children');

// child

`Str::slug()`

The Str::slug method generates a URL friendly "slug" from the given string:

use Illuminate\Support\Str;

$slug = Str::slug('Laravel 5 Framework', '-');

// laravel-5-framework

`Str::snake()`

The Str::snake method converts the given string to snake_case:

use Illuminate\Support\Str;

$converted = Str::snake('fooBar');

// foo_bar

$converted = Str::snake('fooBar', '-');

// foo-bar

`Str::squish()`

The Str::squish method removes all extraneous white space from a string, including extraneous white space between words:

use Illuminate\Support\Str;

$string = Str::squish('    laravel    framework    ');

// laravel framework

`Str::start()`

The Str::start method adds a single instance of the given value to a string if it does not already start with that value:

use Illuminate\Support\Str;

$adjusted = Str::start('this/string', '/');

// /this/string

$adjusted = Str::start('/this/string', '/');

// /this/string

`Str::startsWith()`

The Str::startsWith method determines if the given string begins with the given value:

use Illuminate\Support\Str;

$result = Str::startsWith('This is my name', 'This');

// true

如果传递了一个可能值数组，则当字符串以数组中任意给定值开头时 startsWith 方法将返回 true：

$result = Str::startsWith('This is my name', ['This', 'That', 'There']);

// true

`Str::studly()`

Str::studly 方法将给定的字符串转换为 StudlyCase ：

use Illuminate\Support\Str;

$converted = Str::studly('foo_bar');

// FooBar

`Str::substr()`

Str::substr 方法返回由开始位置和长度参数指定的字符串部分：

use Illuminate\Support\Str;

$converted = Str::substr('The Laravel Framework', 4, 7);

// Laravel

`Str::substrCount()`

Str::substrCount 方法返回给定字符串中给定值出现的次数：

use Illuminate\Support\Str;

$count = Str::substrCount('If you like ice cream, you will like snow cones.', 'like');

// 2

`Str::substrReplace()`

Str::substrReplace 方法替换字符串中某一部分内的文本，从第三个参数指定的位置开始，替换第四个参数指定的字符数。传递 0 给该方法的第四个参数将在指定位置插入字符串，但不替换字符串中的任何现有字符：

use Illuminate\Support\Str;

$result = Str::substrReplace('1300', ':', 2);
// 13:

$result = Str::substrReplace('1300', ':', 2, 0);
// 13:00

`Str::swap()`

Str::swap 方法使用 PHP 的函数 strtr 替换给定字符串中的多个值：

use Illuminate\Support\Str;

$string = Str::swap([
    'Tacos' => 'Burritos',
    'great' => 'fantastic',
], 'Tacos are great!');

// Burritos are fantastic!

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`Str::take()`

The Str::take method returns a specified number of characters from the beginning of a string:

use Illuminate\Support\Str;

$taken = Str::take('Build something amazing!', 5);

// Build

`Str::title()`

The Str::title method converts the given string to Title Case:

use Illuminate\Support\Str;

$converted = Str::title('a nice title uses the correct case');

// A Nice Title Uses The Correct Case

`Str::toBase64()`

The Str::toBase64 method converts the given string to Base64:

use Illuminate\Support\Str;

$base64 = Str::toBase64('Laravel');

// TGFyYXZlbA==

`Str::transliterate()`

The Str::transliterate method will attempt to convert a given string into its closest ASCII representation:

use Illuminate\Support\Str;

$email = Str::transliterate('ⓣⓔⓢⓣ@ⓛⓐⓡⓐⓥⓔⓛ.ⓒⓞⓜ');

// 'test@laravel.com'

`Str::trim()`

The Str::trim method strips whitespace (or other characters) from the beginning and end of the given string. Unlike PHP's native trim function, the Str::trim method also removes unicode whitespace characters:

use Illuminate\Support\Str;

$string = Str::trim(' foo bar ');

// 'foo bar'

`Str::ltrim()`

The Str::ltrim method strips whitespace (or other characters) from the beginning of the given string. Unlike PHP's native ltrim function, the Str::ltrim method also removes unicode whitespace characters:

use Illuminate\Support\Str;

$string = Str::ltrim('  foo bar  ');

// 'foo bar  '

`Str::rtrim()`

The Str::rtrim method strips whitespace (or other characters) from the end of the given string. Unlike PHP's native rtrim function, the Str::rtrim method also removes unicode whitespace characters:

use Illuminate\Support\Str;

$string = Str::rtrim('  foo bar  ');

// '  foo bar'

`Str::ucfirst()`

The Str::ucfirst method returns the given string with the first character capitalized:

use Illuminate\Support\Str;

$string = Str::ucfirst('foo bar');

// Foo bar

`Str::ucsplit()`

The Str::ucsplit method splits the given string into an array by uppercase characters:

use Illuminate\Support\Str;

$segments = Str::ucsplit('FooBar');

// [0 => 'Foo', 1 => 'Bar']

`Str::upper()`

The Str::upper method converts the given string to uppercase:

use Illuminate\Support\Str;

$string = Str::upper('laravel');

// LARAVEL

`Str::ulid()`

The Str::ulid method generates a ULID, which is a compact, time-ordered unique identifier:

use Illuminate\Support\Str;

return (string) Str::ulid();

// 01gd6r360bp37zj17nxb55yv40

If you would like to retrieve a Illuminate\Support\Carbon date instance representing the date and time that a given ULID was created, you may use the createFromId method provided by Laravel's Carbon integration:

use Illuminate\Support\Carbon;
use Illuminate\Support\Str;

$date = Carbon::createFromId((string) Str::ulid());

During testing, it may be useful to "fake" the value that is returned by the Str::ulid method. To accomplish this, you may use the createUlidsUsing method:

use Symfony\Component\Uid\Ulid;

Str::createUlidsUsing(function () {
    return new Ulid('01HRDBNHHCKNW2AK4Z29SN82T9');
});

To instruct the ulid method to return to generating ULIDs normally, you may invoke the createUlidsNormally method:

Str::createUlidsNormally();

`Str::unwrap()`

The Str::unwrap method removes the specified strings from the beginning and end of a given string:

use Illuminate\Support\Str;

Str::unwrap('-Laravel-', '-');

// Laravel

Str::unwrap('{framework: "Laravel"}', '{', '}');

// framework: "Laravel"

`Str::uuid()`

The Str::uuid method generates a UUID (version 4):

use Illuminate\Support\Str;

return (string) Str::uuid();

During testing, it may be useful to "fake" the value that is returned by the Str::uuid method. To accomplish this, you may use the createUuidsUsing method:

use Ramsey\Uuid\Uuid;

Str::createUuidsUsing(function () {
    return Uuid::fromString('eadbfeac-5258-45c2-bab7-ccb9b5ef74f9');
});

To instruct the uuid method to return to generating UUIDs normally, you may invoke the createUuidsNormally method:

Str::createUuidsNormally();

`Str::uuid7()`

The Str::uuid7 method generates a UUID (version 7):

use Illuminate\Support\Str;

return (string) Str::uuid7();

A DateTimeInterface may be passed as an optional parameter which will be used to generate the ordered UUID:

return (string) Str::uuid7(time: now());

`Str::wordCount()`

The Str::wordCount method returns the number of words that a string contains:

use Illuminate\Support\Str;

Str::wordCount('Hello, world!'); // 2

`Str::wordWrap()`

The Str::wordWrap method wraps a string to a given number of characters:

use Illuminate\Support\Str;

$text = "The quick brown fox jumped over the lazy dog."

Str::wordWrap($text, characters: 20, break: "<br />\n");

/*
The quick brown fox<br />
jumped over the lazy<br />
dog.
*/

`Str::words()`

The Str::words method limits the number of words in a string. An additional string may be passed to this method via its third argument to specify which string should be appended to the end of the truncated string:

use Illuminate\Support\Str;

return Str::words('Perfectly balanced, as all things should be.', 3, ' >>>');

// Perfectly balanced, as >>>

`Str::wrap()`

The Str::wrap method wraps the given string with an additional string or pair of strings:

use Illuminate\Support\Str;

Str::wrap('Laravel', '"');

// "Laravel"

Str::wrap('is', before: 'This ', after: ' Laravel!');

// This is Laravel!

`str()`

The str function returns a new Illuminate\Support\Stringable instance of the given string. This function is equivalent to the Str::of method:

$string = str('Taylor')->append(' Otwell');

// 'Taylor Otwell'

If no argument is provided to the str function, the function returns an instance of Illuminate\Support\Str:

$snake = str()->snake('FooBar');

// 'foo_bar'

`trans()`

The trans function translates the given translation key using your language files:

echo trans('messages.welcome');

If the specified translation key does not exist, the trans function will return the given key. So, using the example above, the trans function would return messages.welcome if the translation key does not exist.

`trans_choice()`

The trans_choice function translates the given translation key with inflection:

echo trans_choice('messages.notifications', $unreadCount);

If the specified translation key does not exist, the trans_choice function will return the given key. So, using the example above, the trans_choice function would return messages.notifications if the translation key does not exist.

Fluent Strings

Fluent strings provide a more fluent, object-oriented interface for working with string values, allowing you to chain multiple string operations together using a more readable syntax compared to traditional string operations.

`after`

The after method returns everything after the given value in a string. The entire string will be returned if the value does not exist within the string:

use Illuminate\Support\Str;

$slice = Str::of('This is my name')->after('This is');

// ' my name'

`afterLast`

The afterLast method returns everything after the last occurrence of the given value in a string. The entire string will be returned if the value does not exist within the string:

use Illuminate\Support\Str;

$slice = Str::of('App\Http\Controllers\Controller')->afterLast('\\');

// 'Controller'

`apa`

The apa method converts the given string to title case following the APA guidelines:

use Illuminate\Support\Str;

$converted = Str::of('a nice title uses the correct case')->apa();

// A Nice Title Uses the Correct Case

`append`

The append method appends the given values to the string:

use Illuminate\Support\Str;

$string = Str::of('Taylor')->append(' Otwell');

// 'Taylor Otwell'

`ascii`

The ascii method will attempt to transliterate the string into an ASCII value:

use Illuminate\Support\Str;

$string = Str::of('ü')->ascii();

// 'u'

`basename`

The basename method will return the trailing name component of the given string:

use Illuminate\Support\Str;

$string = Str::of('/foo/bar/baz')->basename();

// 'baz'

If needed, you may provide an "extension" that will be removed from the trailing component:

use Illuminate\Support\Str;

$string = Str::of('/foo/bar/baz.jpg')->basename('.jpg');

// 'baz'

`before`

The before method returns everything before the given value in a string:

use Illuminate\Support\Str;

$slice = Str::of('This is my name')->before('my name');

// 'This is '

`beforeLast`

The beforeLast method returns everything before the last occurrence of the given value in a string:

use Illuminate\Support\Str;

$slice = Str::of('This is my name')->beforeLast('is');

// 'This '

`between`

The between method returns the portion of a string between two values:

use Illuminate\Support\Str;

$converted = Str::of('This is my name')->between('This', 'name');

// ' is my '

`betweenFirst`

The betweenFirst method returns the smallest possible portion of a string between two values:

use Illuminate\Support\Str;

$converted = Str::of('[a] bc [d]')->betweenFirst('[', ']');

// 'a'

`camel`

The camel method converts the given string to camelCase:

use Illuminate\Support\Str;

$converted = Str::of('foo_bar')->camel();

// 'fooBar'

`charAt`

The charAt method returns the character at the specified index. If the index is out of bounds, false is returned:

use Illuminate\Support\Str;

$character = Str::of('This is my name.')->charAt(6);

// 's'

`classBasename`

The classBasename method returns the class name of the given class with the class's namespace removed:

use Illuminate\Support\Str;

$class = Str::of('Foo\Bar\Baz')->classBasename();

// 'Baz'

`chopStart`

The chopStart method removes the first occurrence of the given value only if the value appears at the start of the string:

use Illuminate\Support\Str;

$url = Str::of('https://laravel.com')->chopStart('https://');

// 'laravel.com'

You may also pass an array. If the string starts with any of the values in the array then that value will be removed from string:

use Illuminate\Support\Str;

$url = Str::of('http://laravel.com')->chopStart(['https://', 'http://']);

// 'laravel.com'

`chopEnd`

The chopEnd method removes the last occurrence of the given value only if the value appears at the end of the string:

use Illuminate\Support\Str;

$url = Str::of('https://laravel.com')->chopEnd('.com');

// 'https://laravel'

You may also pass an array. If the string ends with any of the values in the array then that value will be removed from string:

use Illuminate\Support\Str;

$url = Str::of('http://laravel.com')->chopEnd(['.com', '.io']);

// 'http://laravel'

`contains`

The contains method determines if the given string contains the given value. By default this method is case sensitive:

use Illuminate\Support\Str;

$contains = Str::of('This is my name')->contains('my');

// true

You may also pass an array of values to determine if the given string contains any of the values in the array:

use Illuminate\Support\Str;

$contains = Str::of('This is my name')->contains(['my', 'foo']);

// true

You can disable case sensitivity by setting the ignoreCase argument to true:

use Illuminate\Support\Str;

$contains = Str::of('This is my name')->contains('MY', ignoreCase: true);

// true

`containsAll`

The containsAll method determines if the given string contains all of the values in the given array:

use Illuminate\Support\Str;

$containsAll = Str::of('This is my name')->containsAll(['my', 'name']);

// true

You can disable case sensitivity by setting the ignoreCase argument to true:

use Illuminate\Support\Str;

$containsAll = Str::of('This is my name')->containsAll(['MY', 'NAME'], ignoreCase: true);

// true

`deduplicate`

The deduplicate method replaces consecutive instances of a character with a single instance of that character in the given string. By default, the method deduplicates spaces:

use Illuminate\Support\Str;

$result = Str::of('The   Laravel   Framework')->deduplicate();

// The Laravel Framework

You may specify a different character to deduplicate by passing it in as the second argument to the method:

use Illuminate\Support\Str;

$result = Str::of('The---Laravel---Framework')->deduplicate('-');

// The-Laravel-Framework

`dirname`

The dirname method returns the parent directory portion of the given string:

use Illuminate\Support\Str;

$string = Str::of('/foo/bar/baz')->dirname();

// '/foo/bar'

If necessary, you may specify how many directory levels you wish to trim from the string:

use Illuminate\Support\Str;

$string = Str::of('/foo/bar/baz')->dirname(2);

// '/foo'

`endsWith`

The endsWith method determines if the given string ends with the given value:

use Illuminate\Support\Str;

$result = Str::of('This is my name')->endsWith('name');

// true

You may also pass an array of values to determine if the given string ends with any of the values in the array:

use Illuminate\Support\Str;

$result = Str::of('This is my name')->endsWith(['name', 'foo']);

// true

$result = Str::of('This is my name')->endsWith(['this', 'foo']);

// false

`exactly`

The exactly method determines if the given string is an exact match with another string:

use Illuminate\Support\Str;

$result = Str::of('Laravel')->exactly('Laravel');

// true

`excerpt`

The excerpt method extracts an excerpt from the string that matches the first instance of a phrase within that string:

use Illuminate\Support\Str;

$excerpt = Str::of('This is my name')->excerpt('my', [
    'radius' => 3
]);

// '...is my na...'

The radius option, which defaults to 100, allows you to define the number of characters that should appear on each side of the truncated string.

In addition, you may use the omission option to change the string that will be prepended and appended to the truncated string:

use Illuminate\Support\Str;

$excerpt = Str::of('This is my name')->excerpt('name', [
    'radius' => 3,
    'omission' => '(...) '
]);

// '(...) my name'

`explode`

The explode method splits the string by the given delimiter and returns a collection containing each section of the split string:

use Illuminate\Support\Str;

$collection = Str::of('foo bar baz')->explode(' ');

// collect(['foo', 'bar', 'baz'])

`finish`

The finish method adds a single instance of the given value to a string if it does not already end with that value:

use Illuminate\Support\Str;

$adjusted = Str::of('this/string')->finish('/');

// this/string/

$adjusted = Str::of('this/string/')->finish('/');

// this/string/

`headline`

The headline method will convert strings delimited by casing, hyphens, or underscores into a space delimited string with each word's first letter capitalized:

use Illuminate\Support\Str;

$headline = Str::of('taylor_otwell')->headline();

// Taylor Otwell

$headline = Str::of('EmailNotificationSent')->headline();

// Email Notification Sent

`inlineMarkdown`

The inlineMarkdown method converts GitHub flavored Markdown into inline HTML using CommonMark. However, unlike the markdown method, it does not wrap all generated HTML in a block-level element:

use Illuminate\Support\Str;

$html = Str::of('**Laravel**')->inlineMarkdown();

// <strong>Laravel</strong>

Markdown Security

By default, Markdown supports raw HTML, which will expose Cross-Site Scripting (XSS) vulnerabilities when used with raw user input. As per the CommonMark Security documentation, you may use the html_input option to either escape or strip raw HTML, and the allow_unsafe_links option to specify whether to allow unsafe links. If you need to allow some raw HTML, you should pass your compiled Markdown through an HTML Purifier:

use Illuminate\Support\Str;

Str::of('Inject: <script>alert("Hello XSS!");</script>')->inlineMarkdown([
    'html_input' => 'strip',
    'allow_unsafe_links' => false,
]);

// Inject: alert(&quot;Hello XSS!&quot;);

`is`

The is method determines if a given string matches a given pattern. Asterisks may be used as wildcard values

use Illuminate\Support\Str;

$matches = Str::of('foobar')->is('foo*');

// true

$matches = Str::of('foobar')->is('baz*');

// false

`isAscii`

The isAscii method determines if a given string is an ASCII string:

use Illuminate\Support\Str;

$result = Str::of('Taylor')->isAscii();

// true

$result = Str::of('ü')->isAscii();

// false

`isEmpty`

The isEmpty method determines if the given string is empty:

use Illuminate\Support\Str;

$result = Str::of('  ')->trim()->isEmpty();

// true

$result = Str::of('Laravel')->trim()->isEmpty();

// false

`isNotEmpty`

The isNotEmpty method determines if the given string is not empty:

use Illuminate\Support\Str;

$result = Str::of('  ')->trim()->isNotEmpty();

// false

$result = Str::of('Laravel')->trim()->isNotEmpty();

// true

`isJson`

The isJson method determines if a given string is valid JSON:

use Illuminate\Support\Str;

$result = Str::of('[1,2,3]')->isJson();

// true

$result = Str::of('{"first": "John", "last": "Doe"}')->isJson();

// true

$result = Str::of('{first: "John", last: "Doe"}')->isJson();

// false

`isUlid`

The isUlid method determines if a given string is a ULID:

use Illuminate\Support\Str;

$result = Str::of('01gd6r360bp37zj17nxb55yv40')->isUlid();

// true

$result = Str::of('Taylor')->isUlid();

// false

`isUrl`

The isUrl method determines if a given string is a URL:

use Illuminate\Support\Str;

$result = Str::of('http://example.com')->isUrl();

// true

$result = Str::of('Taylor')->isUrl();

// false

The isUrl method considers a wide range of protocols as valid. However, you may specify the protocols that should be considered valid by providing them to the isUrl method:

$result = Str::of('http://example.com')->isUrl(['http', 'https']);

`isUuid`

The isUuid method determines if a given string is a UUID:

use Illuminate\Support\Str;

$result = Str::of('5ace9ab9-e9cf-4ec6-a19d-5881212a452c')->isUuid();

// true

$result = Str::of('Taylor')->isUuid();

// false

`kebab`

The kebab method converts the given string to kebab-case:

use Illuminate\Support\Str;

$converted = Str::of('fooBar')->kebab();

// foo-bar

`lcfirst`

The lcfirst method returns the given string with the first character lowercased:

use Illuminate\Support\Str;

$string = Str::of('Foo Bar')->lcfirst();

// foo Bar

`length`

The length method returns the length of the given string:

use Illuminate\Support\Str;

$length = Str::of('Laravel')->length();

// 7

`limit`

The limit method truncates the given string to the specified length:

use Illuminate\Support\Str;

$truncated = Str::of('The quick brown fox jumps over the lazy dog')->limit(20);

// The quick brown fox...

You may also pass a second argument to change the string that will be appended to the end of the truncated string:

$truncated = Str::of('The quick brown fox jumps over the lazy dog')->limit(20, ' (...)');

// The quick brown fox (...)

If you would like to preserve complete words when truncating the string, you may utilize the preserveWords argument. When this argument is true, the string will be truncated to the nearest complete word boundary:

$truncated = Str::of('The quick brown fox')->limit(12, preserveWords: true);

// The quick...

`lower`

The lower method converts the given string to lowercase:

use Illuminate\Support\Str;

$result = Str::of('LARAVEL')->lower();

// 'laravel'

`markdown`

The markdown method converts GitHub flavored Markdown into HTML:

use Illuminate\Support\Str;

$html = Str::of('# Laravel')->markdown();

// <h1>Laravel</h1>

$html = Str::of('# Taylor <b>Otwell</b>')->markdown([
    'html_input' => 'strip',
]);

// <h1>Taylor Otwell</h1>

Markdown Security

By default, Markdown supports raw HTML, which will expose Cross-Site Scripting (XSS) vulnerabilities when used with raw user input. As per the CommonMark Security documentation, you may use the html_input option to either escape or strip raw HTML, and the allow_unsafe_links option to specify whether to allow unsafe links. If you need to allow some raw HTML, you should pass your compiled Markdown through an HTML Purifier:

use Illuminate\Support\Str;

Str::of('Inject: <script>alert("Hello XSS!");</script>')->markdown([
    'html_input' => 'strip',
    'allow_unsafe_links' => false,
]);

// <p>Inject: alert(&quot;Hello XSS!&quot;);</p>

`mask`

The mask method masks a portion of a string with a repeated character, and may be used to obfuscate segments of strings such as email addresses and phone numbers:

use Illuminate\Support\Str;

$string = Str::of('taylor@example.com')->mask('*', 3);

// tay***************

If needed, you may provide negative numbers as the third or fourth argument to the mask method, which will instruct the method to begin masking at the given distance from the end of the string:

$string = Str::of('taylor@example.com')->mask('*', -15, 3);

// tay***@example.com

$string = Str::of('taylor@example.com')->mask('*', 4, -4);

// tayl**********.com

`match`

The match method will return the portion of a string that matches a given regular expression pattern:

use Illuminate\Support\Str;

$result = Str::of('foo bar')->match('/bar/');

// 'bar'

$result = Str::of('foo bar')->match('/foo (.*)/');

// 'bar'

`matchAll`

The matchAll method will return a collection containing the portions of a string that match a given regular expression pattern:

use Illuminate\Support\Str;

$result = Str::of('bar foo bar')->matchAll('/bar/');

// collect(['bar', 'bar'])

If you specify a matching group within the expression, Laravel will return a collection of the first matching group's matches:

use Illuminate\Support\Str;

$result = Str::of('bar fun bar fly')->matchAll('/f(\w*)/');

// collect(['un', 'ly']);

If no matches are found, an empty collection will be returned.

`isMatch`

The isMatch method will return true if the string matches a given regular expression:

use Illuminate\Support\Str;

$result = Str::of('foo bar')->isMatch('/foo (.*)/');

// true

$result = Str::of('laravel')->isMatch('/foo (.*)/');

// false

`newLine`

The newLine method appends an "end of line" character to a string:

use Illuminate\Support\Str;

$padded = Str::of('Laravel')->newLine()->append('Framework');

// 'Laravel
//  Framework'

`padBoth`

The padBoth method wraps PHP's str_pad function, padding both sides of a string with another string until the final string reaches the desired length:

use Illuminate\Support\Str;

$padded = Str::of('James')->padBoth(10, '_');

// '__James___'

$padded = Str::of('James')->padBoth(10);

// '  James   '

`padLeft`

The padLeft method wraps PHP's str_pad function, padding the left side of a string with another string until the final string reaches the desired length:

use Illuminate\Support\Str;

$padded = Str::of('James')->padLeft(10, '-=');

// '-=-=-James'

$padded = Str::of('James')->padLeft(10);

// '     James'

`padRight`

The padRight method wraps PHP's str_pad function, padding the right side of a string with another string until the final string reaches the desired length:

use Illuminate\Support\Str;

$padded = Str::of('James')->padRight(10, '-');

// 'James-----'

$padded = Str::of('James')->padRight(10);

// 'James     '

`pipe`

The pipe method allows you to transform the string by passing its current value to the given callable:

use Illuminate\Support\Str;
use Illuminate\Support\Stringable;

$hash = Str::of('Laravel')->pipe('md5')->prepend('Checksum: ');

// 'Checksum: a5c95b86291ea299fcbe64458ed12702'

$closure = Str::of('foo')->pipe(function (Stringable $str) {
    return 'bar';
});

// 'bar'

`plural`

The plural method converts a singular word string to its plural form. This function supports any of the languages support by Laravel's pluralizer:

use Illuminate\Support\Str;

$plural = Str::of('car')->plural();

// cars

$plural = Str::of('child')->plural();

// children

You may provide an integer as a second argument to the function to retrieve the singular or plural form of the string:

use Illuminate\Support\Str;

$plural = Str::of('child')->plural(2);

// children

$plural = Str::of('child')->plural(1);

// child

`position`

The position method returns the position of the first occurrence of a substring in a string. If the substring does not exist within the string, false is returned:

use Illuminate\Support\Str;

$position = Str::of('Hello, World!')->position('Hello');

// 0

$position = Str::of('Hello, World!')->position('W');

// 7

`prepend`

The prepend method prepends the given values onto the string:

use Illuminate\Support\Str;

$string = Str::of('Framework')->prepend('Laravel ');

// Laravel Framework

`remove`

The remove method removes the given value or array of values from the string:

use Illuminate\Support\Str;

$string = Str::of('Arkansas is quite beautiful!')->remove('quite');

// Arkansas is beautiful!

You may also pass false as a second parameter to ignore case when removing strings.

`repeat`

The repeat method repeats the given string:

use Illuminate\Support\Str;

$repeated = Str::of('a')->repeat(5);

// aaaaa

`replace`

The replace method replaces a given string within the string:

use Illuminate\Support\Str;

$replaced = Str::of('Laravel 6.x')->replace('6.x', '7.x');

// Laravel 7.x

The replace method also accepts a caseSensitive argument. By default, the replace method is case sensitive:

$replaced = Str::of('macOS 13.x')->replace(
    'macOS', 'iOS', caseSensitive: false
);

`replaceArray`

The replaceArray method replaces a given value in the string sequentially using an array:

use Illuminate\Support\Str;

$string = 'The event will take place between ? and ?';

$replaced = Str::of($string)->replaceArray('?', ['8:30', '9:00']);

// The event will take place between 8:30 and 9:00

`replaceFirst`

The replaceFirst method replaces the first occurrence of a given value in a string:

use Illuminate\Support\Str;

$replaced = Str::of('the quick brown fox jumps over the lazy dog')->replaceFirst('the', 'a');

// a quick brown fox jumps over the lazy dog

`replaceLast`

The replaceLast method replaces the last occurrence of a given value in a string:

use Illuminate\Support\Str;

$replaced = Str::of('the quick brown fox jumps over the lazy dog')->replaceLast('the', 'a');

// the quick brown fox jumps over a lazy dog

`replaceMatches`

The replaceMatches method replaces all portions of a string matching a pattern with the given replacement string:

use Illuminate\Support\Str;

$replaced = Str::of('(+1) 501-555-1000')->replaceMatches('/[^A-Za-z0-9]++/', '')

// '15015551000'

The replaceMatches method also accepts a closure that will be invoked with each portion of the string matching the given pattern, allowing you to perform the replacement logic within the closure and return the replaced value:

use Illuminate\Support\Str;

$replaced = Str::of('123')->replaceMatches('/\d/', function (array $matches) {
    return '['.$matches[0].']';
});

// '[1][2][3]'

`replaceStart`

The replaceStart method replaces the first occurrence of the given value only if the value appears at the start of the string:

use Illuminate\Support\Str;

$replaced = Str::of('Hello World')->replaceStart('Hello', 'Laravel');

// Laravel World

$replaced = Str::of('Hello World')->replaceStart('World', 'Laravel');

// Hello World

`replaceEnd`

The replaceEnd method replaces the last occurrence of the given value only if the value appears at the end of the string:

use Illuminate\Support\Str;

$replaced = Str::of('Hello World')->replaceEnd('World', 'Laravel');

// Hello Laravel

$replaced = Str::of('Hello World')->replaceEnd('Hello', 'Laravel');

// Hello World

`scan`

The scan method parses input from a string into a collection according to a format supported by the sscanf PHP function:

use Illuminate\Support\Str;

$collection = Str::of('filename.jpg')->scan('%[^.].%s');

// collect(['filename', 'jpg'])

`singular`

The singular method converts a string to its singular form. This function supports any of the languages support by Laravel's pluralizer:

use Illuminate\Support\Str;

$singular = Str::of('cars')->singular();

// car

$singular = Str::of('children')->singular();

// child

`slug`

The slug method generates a URL friendly "slug" from the given string:

use Illuminate\Support\Str;

$slug = Str::of('Laravel Framework')->slug('-');

// laravel-framework

`snake`

The snake method converts the given string to snake_case:

use Illuminate\Support\Str;

$converted = Str::of('fooBar')->snake();

// foo_bar

`split`

The split method splits a string into a collection using a regular expression:

use Illuminate\Support\Str;

$segments = Str::of('one, two, three')->split('/[\s,]+/');

// collect(["one", "two", "three"])

`squish`

The squish method removes all extraneous white space from a string, including extraneous white space between words:

use Illuminate\Support\Str;

$string = Str::of('    laravel    framework    ')->squish();

// laravel framework

`start`

The start method adds a single instance of the given value to a string if it does not already start with that value:

use Illuminate\Support\Str;

$adjusted = Str::of('this/string')->start('/');

// /this/string

$adjusted = Str::of('/this/string')->start('/');

// /this/string

`startsWith`

The startsWith method determines if the given string begins with the given value:

use Illuminate\Support\Str;

$result = Str::of('This is my name')->startsWith('This');

// true

`stripTags`

The stripTags method removes all HTML and PHP tags from a string:

use Illuminate\Support\Str;

$result = Str::of('<a href="https://laravel.com">Taylor <b>Otwell</b></a>')->stripTags();

// Taylor Otwell

$result = Str::of('<a href="https://laravel.com">Taylor <b>Otwell</b></a>')->stripTags('<b>');

// Taylor <b>Otwell</b>

`studly`

The studly method converts the given string to StudlyCase:

use Illuminate\Support\Str;

$converted = Str::of('foo_bar')->studly();

// FooBar

`substr`

The substr method returns the portion of the string specified by the given start and length parameters:

use Illuminate\Support\Str;

$string = Str::of('Laravel Framework')->substr(8);

// Framework

$string = Str::of('Laravel Framework')->substr(8, 5);

// Frame

`substrReplace`

The substrReplace method replaces text within a portion of a string, starting at the position specified by the second argument and replacing the number of characters specified by the third argument. Passing 0 to the method's third argument will insert the string at the specified position without replacing any of the existing characters in the string:

use Illuminate\Support\Str;

$string = Str::of('1300')->substrReplace(':', 2);

// 13:

$string = Str::of('The Framework')->substrReplace(' Laravel', 3, 0);

// The Laravel Framework

`swap`

The swap method replaces multiple values in the string using PHP's strtr function:

use Illuminate\Support\Str;

$string = Str::of('Tacos are great!')
    ->swap([
        'Tacos' => 'Burritos',
        'great' => 'fantastic',
    ]);

// Burritos are fantastic!

`take`

The take method returns a specified number of characters from the beginning of the string:

use Illuminate\Support\Str;

$taken = Str::of('Build something amazing!')->take(5);

// Build

`tap`

The tap method passes the string to the given closure, allowing you to examine and interact with the string while not affecting the string itself. The original string is returned by the tap method regardless of what is returned by the closure:

use Illuminate\Support\Str;
use Illuminate\Support\Stringable;

$string = Str::of('Laravel')
    ->append(' Framework')
    ->tap(function (Stringable $string) {
        dump('String after append: '.$string);
    })
    ->upper();

// LARAVEL FRAMEWORK

`test`

The test method determines if a string matches the given regular expression pattern:

use Illuminate\Support\Str;

$result = Str::of('Laravel Framework')->test('/Laravel/');

// true

`title`

The title method converts the given string to Title Case:

use Illuminate\Support\Str;

$converted = Str::of('a nice title uses the correct case')->title();

// A Nice Title Uses The Correct Case

`toBase64`

The toBase64 method converts the given string to Base64:

use Illuminate\Support\Str;

$base64 = Str::of('Laravel')->toBase64();

// TGFyYXZlbA==

`toHtmlString`

The toHtmlString method converts the given string to an instance of Illuminate\Support\HtmlString, which will not be escaped when rendered in Blade templates:

use Illuminate\Support\Str;

$htmlString = Str::of('Nuno Maduro')->toHtmlString();

`toUri`

The toUri method converts the given string to an instance of Illuminate\Support\Uri:

use Illuminate\Support\Str;

$uri = Str::of('https://example.com')->toUri();

`transliterate`

The transliterate method will attempt to convert a given string into its closest ASCII representation:

use Illuminate\Support\Str;

$email = Str::of('ⓣⓔⓢⓣ@ⓛⓐⓡⓐⓥⓔⓛ.ⓒⓞⓜ')->transliterate()

// 'test@laravel.com'

`trim`

The trim method trims the given string. Unlike PHP's native trim function, Laravel's trim method also removes unicode whitespace characters:

use Illuminate\Support\Str;

$string = Str::of('  Laravel  ')->trim();

// 'Laravel'

$string = Str::of('/Laravel/')->trim('/');

// 'Laravel'

`ltrim`

The ltrim method trims the left side of the string. Unlike PHP's native ltrim function, Laravel's ltrim method also removes unicode whitespace characters:

use Illuminate\Support\Str;

$string = Str::of('  Laravel  ')->ltrim();

// 'Laravel  '

$string = Str::of('/Laravel/')->ltrim('/');

// 'Laravel/'

`rtrim`

The rtrim method trims the right side of the given string. Unlike PHP's native rtrim function, Laravel's rtrim method also removes unicode whitespace characters:

use Illuminate\Support\Str;

$string = Str::of('  Laravel  ')->rtrim();

// '  Laravel'

$string = Str::of('/Laravel/')->rtrim('/');

// '/Laravel'

`ucfirst`

ucfirst 方法返回首字母大写的给定字符串：

use Illuminate\Support\Str;

$string = Str::of('foo bar')->ucfirst();

// Foo bar

`ucsplit`

ucsplit 方法将给定的字符串按大写字符拆分为集合：

use Illuminate\Support\Str;

$string = Str::of('Foo Bar')->ucsplit();

// collect(['Foo', 'Bar'])

`unwrap`

unwrap 方法从给定字符串的开头和结尾删除指定的字符串：

use Illuminate\Support\Str;

Str::of('-Laravel-')->unwrap('-');

// Laravel

Str::of('{framework: "Laravel"}')->unwrap('{', '}');

// framework: "Laravel"

`upper`

upper 方法将给定的字符串转换为大写：

use Illuminate\Support\Str;

$adjusted = Str::of('laravel')->upper();

// LARAVEL

`when`

如果给定条件为 true，则 when 方法调用给定的闭包。闭包将接收流畅的字符串实例：

use Illuminate\Support\Str;
use Illuminate\Support\Stringable;

$string = Str::of('Taylor')
    ->when(true, function (Stringable $string) {
        return $string->append(' Otwell');
    });

// 'Taylor Otwell'

如果需要，你可以将另一个闭包作为第三个参数传递给 when 方法。如果条件参数的结果为 false ，将执行此闭包。

`whenContains`

如果字符串包含给定值，则 whenContains 方法调用给定的闭包。闭包将接收流畅的字符串实例：

use Illuminate\Support\Str;
use Illuminate\Support\Stringable;

$string = Str::of('tony stark')
    ->whenContains('tony', function (Stringable $string) {
        return $string->title();
    });

// 'Tony Stark'

如果需要，你可以将另一个闭包作为第三个参数传递给 when 方法。如果字符串不包含给定值，则执行此闭包。

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您还可以传递一个值数组来检测给定的字符串是否包含数组中的任意值：

use Illuminate\Support\Str;
use Illuminate\Support\Stringable;

$string = Str::of('tony stark')
    ->whenContains(['tony', 'hulk'], function (Stringable $string) {
        return $string->title();
    });

// Tony Stark

`whenContainsAll`

如果字符串包含所有给定的子字符串，则 whenContainsAll 方法将调用给定的闭包。闭包将接收流畅的字符串实例：

use Illuminate\Support\Str;
use Illuminate\Support\Stringable;

$string = Str::of('tony stark')
    ->whenContainsAll(['tony', 'stark'], function (Stringable $string) {
        return $string->title();
    });

// 'Tony Stark'

如果需要，你可以将另一个闭包作为第三个参数传递给该 when 方法。如果条件参数的结果为 false ，将执行此闭包。

`whenEmpty`

如果字符串为空，则 whenEmpty 方法将调用给定的闭包。如果闭包返回一个值，whenEmpty 方法也将返回该值。如果闭包不返回值，则将返回流畅的字符串实例：

use Illuminate\Support\Str;
use Illuminate\Support\Stringable;

$string = Str::of('  ')->trim()->whenEmpty(function (Stringable $string) {
    return $string->prepend('Laravel');
});

// 'Laravel'

`whenNotEmpty`

如果字符串不为空，则 whenNotEmpty 方法将调用给定的闭包。如果闭包返回一个值，whenNotEmpty 方法也将返回该值。如果闭包不返回值，则将返回流畅的字符串实例：

use Illuminate\Support\Str;
use Illuminate\Support\Stringable;

$string = Str::of('Framework')->whenNotEmpty(function (Stringable $string) {
    return $string->prepend('Laravel ');
});

// 'Laravel Framework'

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`whenStartsWith`

如果字符串以给定的子字符串开头，则 whenStartsWith 方法调用给定的闭包。闭包将接收流畅的字符串实例：

use Illuminate\Support\Str;
use Illuminate\Support\Stringable;

$string = Str::of('disney world')->whenStartsWith('disney', function (Stringable $string) {
    return $string->title();
});

// 'Disney World'

`whenEndsWith`

如果字符串以给定的子字符串结尾，则 whenEndsWith 方法调用给定的闭包。闭包将接收流畅的字符串实例：

use Illuminate\Support\Str;
use Illuminate\Support\Stringable;

$string = Str::of('disney world')->whenEndsWith('world', function (Stringable $string) {
    return $string->title();
});

// 'Disney World'

`whenExactly`

如果字符串与给定的字符串完全匹配，则 whenExactly 方法将调用给定的闭包。闭包将接收流畅的字符串实例：

use Illuminate\Support\Str;
use Illuminate\Support\Stringable;

$string = Str::of('laravel')->whenExactly('laravel', function (Stringable $string) {
    return $string->title();
});

// 'Laravel'

`whenNotExactly`

如果字符串与给定的字符串不完全匹配，则 whenNotExactly 方法调用给定的闭包。闭包将接收流畅的字符串实例：

use Illuminate\Support\Str;
use Illuminate\Support\Stringable;

$string = Str::of('framework')->whenNotExactly('laravel', function (Stringable $string) {
    return $string->title();
});

// 'Framework'

`whenIs`

如果字符串与给定模式匹配，则 whenIs 方法将调用给定的闭包。星号可用作通配符值。闭包将接收流畅的字符串实例：

use Illuminate\Support\Str;
use Illuminate\Support\Stringable;

$string = Str::of('foo/bar')->whenIs('foo/*', function (Stringable $string) {
    return $string->append('/baz');
});

// 'foo/bar/baz'

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`whenIsAscii`

如果字符串是 7 位 ASCII，则 whenIsAscii 方法将调用给定的闭包。闭包将接收流畅的字符串实例：

use Illuminate\Support\Str;
use Illuminate\Support\Stringable;

$string = Str::of('laravel')->whenIsAscii(function (Stringable $string) {
    return $string->title();
});

// 'Laravel'

`whenIsUlid`

如果字符串是有效的 ULID，则 whenIsUlid 方法将调用给定的闭包。闭包将接收流畅的字符串实例：

use Illuminate\Support\Str;

$string = Str::of('01gd6r360bp37zj17nxb55yv40')->whenIsUlid(function (Stringable $string) {
    return $string->substr(0, 8);
});

// '01gd6r36'

`whenIsUuid`

如果字符串是有效的 UUID，则 whenIsUuid 方法将调用给定的闭包。闭包将接收流畅的字符串实例：

use Illuminate\Support\Str;
use Illuminate\Support\Stringable;

$string = Str::of('a0a2a2d2-0b87-4a18-83f2-2529882be2de')->whenIsUuid(function (Stringable $string) {
    return $string->substr(0, 8);
});

// 'a0a2a2d2'

`whenTest`

如果字符串与给定的正则表达式匹配，则 whenTest 方法将调用给定的闭包。闭包将接收流畅的字符串实例：

use Illuminate\Support\Str;
use Illuminate\Support\Stringable;

$string = Str::of('laravel framework')->whenTest('/laravel/', function (Stringable $string) {
    return $string->title();
});

// 'Laravel Framework'

`wordCount`

wordCount 方法返回字符串包含的单词数：

use Illuminate\Support\Str;

Str::of('Hello, world!')->wordCount(); // 2

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`words`

words 方法限制字符串中的单词数。如果有必要，你可以指定一个额外的字符串，它将被追加到被截断的字符串上：

use Illuminate\Support\Str;

$string = Str::of('Perfectly balanced, as all things should be.')->words(3, ' >>>');

// Perfectly balanced, as >>>

`wrap`

wrap 方法用一个额外的字符串或字符串对包装给定的字符串：

use Illuminate\Support\Str;

Str::of('Laravel')->wrap('"');

// "Laravel"

Str::is('is')->wrap(before: 'This ', after: ' Laravel!');

// This is Laravel!

authcontroller 翻译于

字符串操作 12.x 12.x 11.x 10.x 9.x 8.5 8.x 7.x 6.x 5.8 5.7 5.6 5.5 5.4 5.3 5.2 5.1

字符串

介绍

可用的方法

字符串

Fluent Strings （流式字符串）

Strings （字符串）

__()

class_basename()

e()

preg_replace_array()

Str::after()

Str::afterLast()

Str::apa()

Str::ascii()

Str::before()

Str::beforeLast()

Str::between()

Str::betweenFirst()

Str::camel()

Str::charAt()

Str::chopStart()

Str::chopEnd()

Str::contains()

Str::containsAll()

Str::doesntContain()

Str::deduplicate()

Str::endsWith()

Str::excerpt()

Str::finish()

Str::headline()

Str::inlineMarkdown()

Markdown 安全性

Str::is()

Str::isAscii()

Str::isJson()

Str::isUrl()

Str::isUlid()

Str::isUuid()

Str::kebab()

Str::lcfirst()

Str::length()

Str::limit()

Str::lower()

Str::markdown()

Markdown 安全性

Str::mask()

Str::orderedUuid()

Str::padBoth()

Str::padLeft()

Str::padRight()

Str::password()

Str::plural()

Str::pluralStudly()

Str::position()

Str::random()

Str::remove()

Str::repeat()

Str::replace()

Str::replaceArray()

Str::replaceFirst()

Str::replaceLast()

Str::replaceMatches()

Str::replaceStart()

Str::replaceEnd()

Str::reverse()

Str::singular()

Str::slug()

Str::snake()

Str::squish()

Str::start()

Str::startsWith()

Str::studly()

Str::substr()

Str::substrCount()

Str::substrReplace()

Str::swap()

Str::take()

Str::title()

Str::toBase64()

字符串操作

12.x

12.x 11.x 10.x 9.x 8.5 8.x 7.x 6.x 5.8 5.7 5.6 5.5 5.4 5.3 5.2 5.1

`__()`

`class_basename()`

`e()`

`preg_replace_array()`

`Str::after()`

`Str::afterLast()`

`Str::apa()`

`Str::ascii()`

`Str::before()`

`Str::beforeLast()`

`Str::between()`

`Str::betweenFirst()`

`Str::camel()`

`Str::charAt()`

`Str::chopStart()`

`Str::chopEnd()`

`Str::contains()`

`Str::containsAll()`

`Str::doesntContain()`

`Str::deduplicate()`

`Str::endsWith()`

`Str::excerpt()`

`Str::finish()`

`Str::headline()`

`Str::inlineMarkdown()`

`Str::is()`

`Str::isAscii()`

`Str::isJson()`

`Str::isUrl()`

`Str::isUlid()`

`Str::isUuid()`

`Str::kebab()`

`Str::lcfirst()`

`Str::length()`

`Str::limit()`

`Str::lower()`

`Str::markdown()`

`Str::mask()`

`Str::orderedUuid()`

`Str::padBoth()`

`Str::padLeft()`

`Str::padRight()`

`Str::password()`

`Str::plural()`

`Str::pluralStudly()`

`Str::position()`

`Str::random()`

`Str::remove()`

`Str::repeat()`

`Str::replace()`

`Str::replaceArray()`

`Str::replaceFirst()`

`Str::replaceLast()`

`Str::replaceMatches()`

`Str::replaceStart()`

`Str::replaceEnd()`

`Str::reverse()`

`Str::singular()`

`Str::slug()`

`Str::snake()`

`Str::squish()`

`Str::start()`

`Str::startsWith()`

`Str::studly()`

`Str::substr()`

`Str::substrCount()`

`Str::substrReplace()`

`Str::swap()`

`Str::take()`

`Str::title()`

`Str::toBase64()`

`Str::transliterate()`

`Str::trim()`

`Str::ltrim()`

`Str::rtrim()`

`Str::ucfirst()`

`Str::ucsplit()`

`Str::upper()`

`Str::ulid()`