<?php // Everything you enter here will be executed by our servers. Try it! $str = "1_1341383124_Photo /Jul 04, 1 22 02 AM_20130724204332.png"; echo $a = strrpos($str,"."); $str2 = substr($str,0,$a); $str3 = preg_replace("/[-, :;.//]/","_",$str2); $str3 = preg_replace("/[_]+/","_",$str3); echo $str3;
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