Couldn't measure time for file include

[Dareros]

Hi; why does this snippet of code doesn't measure the time required to include the file in milliseconds. The problem is unknown for me because the variable $diff always have the wrong value. Here is the code :

<?php
$start = microtime(true);
include('/path/to/my/script.php');
$end = microtime(true);

$diff = ($end-$start)*1000;
echo 'The script took ' . $diff . 'ms to proceed.';
?>

The problem is that the variable $diff return a big number instead of a couple of milliseconds, for example it return a value such as 1416110398494 which is illogical why ?

 

Regards

[requinix]

Did you check the actual values of $start and $end?

[Dareros]

Yes, strange behavior!

$start return : 1416165131.3015

$end return : 1416165131.4172

$diff return : 1416165131417.2

 

How that can happen ?

[Ch0cu3r]

Is the code you posted the actual code you are testing?

 

You'd only get that result if $end is being multiplied by 1000 and not $diff.

[Barand]

... or your $start contains 0 (have you misspelled $start in your code).

 

Given your start and end, it should produce

$start = 1416165131.3015;
$end = 1416165131.4172;
$diff = ($end - $start)*1000;

echo $diff . ' ms';                    // 115.70000648499 ms