php 检查脚本的另一个实例是否已在运行

Posted 2021-05-04

<?php
    /**
     * Check if another instance of script already running
     *
     * @return bool
     */
    public function isAnotherInstanceAlreadyRunning()
    {
        $command = 'ps aux | grep ' . basename($_SERVER['SCRIPT_FILENAME']) . ' | grep -v grep | grep -v "sh -c" | grep ' . $_SERVER['LOGNAME'];
        $exec    = $this->exec($command, false);
        if (($exec['status'] === 0) || ($exec['status'] === 1)) {
            if (count($exec['data']) > 1) {
                return true;
            }
        } else {
            return $exec['status'];
        }

        return false;
    }