PHP循环充当cronjob [确保只运行一个实例]

pecl install redis

<?php

require 'vendor/autoload.php';

use Redis;

// 创建Redis实例
$redis = new Redis();
$redis->connect('127.0.0.1', 6379);

// 尝试获取锁
$lock_acquired = false;
$lock_key = 'my_cronjob_lock';

while (!$lock_acquired) {
    $is_locked = $redis->set($lock_key, 1, ['nx', 'ex' => 300]);
    if ($is_locked) {
        $lock_acquired = true;
        // 执行您的任务
        run_my_task();
        // 释放锁
        $redis->del($lock_key);
    } else {
        // 等待一段时间，然后重试
        sleep(5);
    }
}

function run_my_task() {
    // 在这里执行您的任务
    echo "Task executed at " . date("Y-m-d H:i:s") . "\n";
}

php cronjob.php