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@ 2014-02-21T16:07:14Z

<?php

$file = 'azertyuiop.jpg';

echo $yearToLetter = substr($file, 3, 1);
echo '--';
echo $realFile     = substr($file, 4);

Output
Performance
VLD
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substr: documentation ( source)

preferences:dark modelive preview

39.12 ms | 402 KiB | 5 Q