laravel Gregwar/Captcha图片resource(395) of type (gd)
/**
* 图片验证码
*/
public function captcha()
{
$phrase = new PhraseBuilder;
// 设置验证码位数
$code = $phrase->build(4);
// 生成验证码图片的Builder对象,配置相应属性
$builder = new CaptchaBuilder($code, $phrase);
// 设置背景颜色
$builder->setBackgroundColor(220, 210, 230);
$builder->setMaxAngle(25);
$builder->setMaxBehindLines(10);
$builder->setMaxFrontLines(10);
// 可以设置图片宽高及字体
$builder->build($width = 100, $height = 40, $font = null);
// 获取验证码的内容
$phrase = $builder->getPhrase();
// 生成图片
header('Cache-Control: no-cache, must-revalidate');
header('Content-Type:image/jpeg');
$builder->output();exit;
}
返回乱码
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