How to find php execution time?

Question

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
?>

Related: [Loading time of php page in apache server](http://stackoverflow.com/questions/13411389/loading-time-of-php-page-in-apache-server) — Ja͢ck, Jun 11 '13 at 03:08

score 92 · Accepted Answer · answered Jun 11 '13 at 02:58

92

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
?>

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
?>

answered Jun 11 '13 at 02:58

2

Might be worth to note that `$_SERVER['REQUEST_TIME']` was available since 5.1 albeit with a precision of seconds. – Ja͢ck Jun 11 '13 at 02:59
4

+1 for the 5.4 start time superglobal – Orangepill Jun 11 '13 at 02:59
1

If you're measuring in seconds then your doing something wrong. – Orangepill Jun 11 '13 at 02:59
@Orangepill Thank you :) - I didn't get you on your last comment. – Jun 11 '13 at 03:03
You don't need the curlies if you're using double quotes. – holographic-principle Jun 11 '13 at 04:51

How to find php execution time?

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