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@ 2014-08-12T13:25:02Z

<?php

$a = microtime();

if(file_exists('foo.php')) {}

$b = microtime();

echo $b - $a;

Output
Performance
VLD
References
Branches

microtime: documentation ( source)
file_exists: documentation ( source)

preferences:dark modelive preview

36.59 ms | 402 KiB | 5 Q