PHP文件锁，防止争抢

FileLock.php

<?php

/**
 * author     jianglong
 * date       2019/8/5 下午5:00
 */

/**
 * 文件锁
 * Trait FileLock
 * @author jianglong
 */
 
trait FileLock
{
    public static function callWithLock($class, $method, $param, $lockFileName)
    {
        if (!is_dir('../runtime/lock')) {
            mkdir('../runtime/lock', 0777, true);
        }
        $resource = fopen('../runtime/lock/' . $lockFileName, 'w+');
        if (flock($resource, LOCK_EX)) {//排它锁
            $rsl = call_user_func_array([$class, $method], $param);
            flock($resource, LOCK_UN);//解锁
        }
        fclose($resource);
        return $rsl;
    }

}