直接上代码：
//提交加锁lock$goldlock = dirname(dirname(dirname(__FILE__))).‘/cache/gold.lock‘;while (file_exists($goldlock)) {$goldlock_time = @filemtime($goldlock);if ($goldlock_time && (time()-$goldlock_time >=5)) {@unlink($goldlock);} ???????????? usleep(rand(100, 500)); ???????} ???????touch($goldlock); ??????# 业务代码... ??????@unlink($goldlock);//释放锁
php文件锁
原文地址：https://www.cnblogs.com/ygcool/p/8656169.html