note 53954 deleted from function.strpos by mazzanet

From: Date: Sat, 18 Jun 2005 10:41:10 +0000
Subject: note 53954 deleted from function.strpos by mazzanet
References: 1  Groups: php.notes 
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Note Submitter: keith dot ng at phpdiary dot org Reason: useless ---- This function returns the position of the first occurence of a string in a string, but if you want to find the *last* occurence instead, you could use PHP 5's strripos(). If you are using PHP3/4 but require this functionality, here's a clever workaround that reverses the strings and does not use any complicated loops. /** * Find position of last occurrence of a case-insensitive string in a string * * Returns the numeric position of the last occurrence of needle in the haystack string. * NB: string positions start at 0, and not 1. If needle is not found, FALSE is returned. * * Author: Keith Ng (keith@phpdiary.org) */ function strripos($haystack, $needle) { $haystack = strtolower($haystack); //remove this for case-sensitivity $needle = strtolower($needle); //remove this for case-sensitivity $tmp = strpos(strrev($haystack),strrev($needle)); if ($tmp === false) { return false; } else { return strlen($haystack) - ($tmp + strlen($needle)-1) - 1; } }

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