如何找到php执行时间? [英] How to find php execution time?

问题描述

我的网站中有一大段 PHP 代码，我想知道处理的执行时间.我该怎么做?

I have a large PHP code in my website, I want to know the execution time of processing. How can I do this?

<?php
// large code
// large code
// large code

// print execution time here
?>

推荐答案

您可以使用 microtime 作为 PHP 的开始和结束代码:

You can use microtime as the start and end of your PHP code:

<?php
    $time_start = microtime(true);
    sleep(1);
    $time_end = microtime(true);
    $time = $time_end - $time_start;
    echo "Process Time: {$time}";
    // Process Time: 1.0000340938568
?>

自 PHP 5.4.0 开始，无需获取开始时间，$_SERVER 超全局数组已经有了它:

As of PHP 5.4.0, there is no need to get start time at the beginning, the $_SERVER superglobal array already has it:

<?php
    sleep(1);
    $time = microtime(true) - $_SERVER["REQUEST_TIME_FLOAT"];
    echo "Process Time: {$time}";
    // Process Time: 1.0061590671539
?>

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