event函数 一定机率报错

运行环境

• PHP 7.4.13 /CentOS Linux release 7.8.2003 (Core)

  问题

  event() 函数有一定机率报错,经过追踪,是生uuid4报错,偶发

• 初步怀疑是php配置/环境哪里不对,php是手工安装的,装了opcache扩展,但关闭了.除此之外和虚拟机并没有不同.

文件位置: vendor/ramsey/uuid/src/UuidFactory.php

//是这个函数调用的
public function uuid4(): UuidInterface
{
  $bytes = $this->randomGenerator->generate(16);

  return $this->uuidFromBytesAndVersion($bytes, 4);
}

private function uuidFromBytesAndVersion(string $bytes, int $version): UuidInterface
    {
        /** @var array $unpackedTime */
        $unpackedTime = unpack('n*', substr($bytes, 6, 2));
        $timeHi = (int) $unpackedTime[1];
        $timeHiAndVersion = pack('n*', BinaryUtils::applyVersion($timeHi, $version));

        /** @var array $unpackedClockSeq */
        $unpackedClockSeq = unpack('n*', substr($bytes, 8, 2));
        $clockSeqHi = (int) $unpackedClockSeq[1];//就是这里报错
        $clockSeqHiAndReserved = pack('n*', BinaryUtils::applyVariant($clockSeqHi));

        $bytes = substr_replace($bytes, $timeHiAndVersion, 6, 2);
        $bytes = substr_replace($bytes, $clockSeqHiAndReserved, 8, 2);

        if ($this->isDefaultFeatureSet) {
            return LazyUuidFromString::fromBytes($bytes);
        }
        return $this->uuid($bytes);
    }

错误日志

• Undefined offset: 1
• #0 /home/www/ec/vendor/ramsey/uuid/src/UuidFactory.php(481): Illuminate\Foundation\Bootstrap\HandleExceptions->handleError()
• #1 /home/www/ec/vendor/ramsey/uuid/src/UuidFactory.php(387): Ramsey\Uuid\UuidFactory->uuidFromBytesAndVersion()

  update

• 如有进展,我会更新

  第一次更新

• 安装虚拟机试了下,每次都是成功,没有这个问题虚拟机是centos8/php7.4/laravel8

  结束

• 新机器同样的代码没有问题,出问题的机器是因为开始的php是通过宝塔安装的,后来又删除,手动编译安装,把环境搞坏了.