note 77174 deleted from function.rand by felipe

From: Date: Sun, 30 Dec 2007 18:46:40 +0000
Subject: note 77174 deleted from function.rand by felipe
References: 1  Groups: php.notes 
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Note Submitter: jfkallen at hotmail dot com ---- In regards to mno2go's note below on randomly generated strings, I am not sure what's inefficient about this. I like it and am using it in several modules (so thanks). I made a few tweaks though. There is a fence-post error in the code (a string's range is 0 to n-1). There is also excessive calls to strlen. <?php function generateCode($length=6) { $chars = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPRQSTUVWXYZ0123456789"; $code = ""; $clen = strlen($chars) - 1; //a variable with the fixed length of chars correct for the fence post issue while (strlen($code) < $length) { $code .= $chars[mt_rand(0,$clen)]; //mt_rand's range is inclusive - this is why we need 0 to n-1 } return $code; } ?>

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