note 87844 added to function.preg-match

From: Date: Fri, 26 Dec 2008 07:37:39 +0000
Subject: note 87844 added to function.preg-match
Groups: php.notes 
Request: Send a blank email to php-notes+get-148513@lists.php.net to get a copy of this message
Can you believe it, right after I posted my last comment I figured it out, usually happens. Help to any newbies that struggle with it: using: preg_match(/^[a-zA-Z]+[^0-9]/', $string); means match characters a up to z at beggining and through the string, dont match 0 to 9, but for some reason it will ignore this 'dont match' 0-9 because there is no ending expression. So as long as there are characters a-z even if there are digits it will still return true. To get past this, you must declare what you want matching at the end of the string i.e: preg_match(/^[a-zA-Z]+[^0-9][a-zA-Z]+$/', $string); Notice that extra expression at the end with the $ sign stating that last expression must match at the end of the string. So now it reads, if first character is a-z and there is not 0-9 and end character is a-z return true. ---- Server IP: 87.124.35.190 Probable Submitter: 80.6.32.196 ---- Manual Page -- http://www.php.net/manual/en/function.preg-match.php Edit -- https://master.php.net/note/edit/87844 Del: integrated -- https://master.php.net/note/delete/87844/integrated Del: useless -- https://master.php.net/note/delete/87844/useless Del: bad code -- https://master.php.net/note/delete/87844/bad+code Del: spam -- https://master.php.net/note/delete/87844/spam Del: non-english -- https://master.php.net/note/delete/87844/non-english Del: in docs -- https://master.php.net/note/delete/87844/in+docs Del: other reasons-- https://master.php.net/note/delete/87844 Reject -- https://master.php.net/note/reject/87844 Search -- https://master.php.net/manage/user-notes.php

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