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<?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 $str3;
Output for git.master, git.master_jit, rfc.property-hooks
52 Warning: preg_replace(): Compilation failed: missing terminating ] for character class at offset 11 in /in/aTSrq on line 6 Deprecated: preg_replace(): Passing null to parameter #3 ($subject) of type array|string is deprecated in /in/aTSrq on line 7

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