note 72466 added to function.strpos

From: Date: Fri, 19 Jan 2007 20:15:47 +0000
Subject: note 72466 added to function.strpos
Groups: php.notes 
Request: Send a blank email to php-notes+get-121928@lists.php.net to get a copy of this message
Try this function to find the first position of needle before a given offset. For example: <?php $s = "This is a test a is This"; $offset = strpos($s, "test"); strnpos($s, "is", $offset); // returns 17 strnpos($s, "is", -$offset); // returns 5 // Works just like strpos if $offset is positive. // If $offset is negative, return the first position of needle // before before $offset. function strnpos($haystack, $needle, $offset=0) { if ($offset>=0) $result=strpos($haystack, $needle, $offset); else { $offset=strlen($haystack)+$offset; $haystack=strrev($haystack); $needle=strrev($needle); $result=strpos($haystack, $needle, $offset); if ($result!==false) { $result+=strlen($needle); $result=strlen($haystack)-$result; } } return $result; } ?> ---- Server IP: 66.207.199.35 Probable Submitter: 24.86.134.53 ---- Manual Page -- http://www.php.net/manual/en/function.strpos.php Edit -- https://master.php.net/note/edit/72466 Del: integrated -- https://master.php.net/note/delete/72466/integrated Del: useless -- https://master.php.net/note/delete/72466/useless Del: bad code -- https://master.php.net/note/delete/72466/bad+code Del: spam -- https://master.php.net/note/delete/72466/spam Del: non-english -- https://master.php.net/note/delete/72466/non-english Del: in docs -- https://master.php.net/note/delete/72466/in+docs Del: other reasons-- https://master.php.net/note/delete/72466 Reject -- https://master.php.net/note/reject/72466 Search -- https://master.php.net/manage/user-notes.php

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