超时 - PHP 是否可以限制函数执行时间?
PHP 是否可以限制函数执行时间,以使下列伪代码的功能得以实现?
<code>foreach ($jobs as $job) { try { run($job); } catch (TimeoutException $e) { printf("Timeout: %s\n", $e->getMessage()); continue; } } function run($job) { // ssh, HTTP request, Connect DB etc. } </code>
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PHP 是否可以限制函数执行时间,以使下列伪代码的功能得以实现?
<code>foreach ($jobs as $job) { try { run($job); } catch (TimeoutException $e) { printf("Timeout: %s\n", $e->getMessage()); continue; } } function run($job) { // ssh, HTTP request, Connect DB etc. } </code>
<code>// 设置闹钟信号处理,抛异常退出循环 declare(ticks = 1); pcntl_signal(SIGALRM, function(){throw new Exception('process_timeout');}); // 设置闹钟,5秒超时 pcntl_alarm(5); $jobs = array_fill(0, 1000, 'job'); foreach ($jobs as $job) { try { run($job); } catch (Exception $e) { printf("Timeout: %s\n", $e->getMessage()); exit; } } function run($job) { // ssh, HTTP request, Connect DB etc. sleep(1); } </code>
推荐你一个框架swooole
看你代码就是要处理一个花费时间比较长的任务
swoole里的task,提交过去一个任务,立即返回,任务在后台自动运行,不用关注运行时间
设置了 set_time_limit() 会使任务无法完成
<code>set_time_limit() </code>
这一个

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