RE: [PHP] Stripping chars in string but leaving numerics

From: Date: Wed, 02 Aug 2000 08:24:32 +0000
Subject: RE: [PHP] Stripping chars in string but leaving numerics
Groups: php.general 
Request: Send a blank email to php-general+get-9646@lists.php.net to get a copy of this message
> So if i have a string with value "abcd*()123" i want the > output to be "123" In the case above I'd use a regular expression to match this. For that task you'll need the /d instruction which matches digits. In your example matching the 123 would be easy: preg_match("/(\d+)/i", "abcd*()123", $matches) $matches will be an array, and $matches[0] contains the whole string, and $matches[1] contains the first match from a pattern in paranthesis, i.e. the $matches[1] = "123" What happens? /d+ matches a digit one or more times, that's what the plus sign means. preg_match is a Perl Regular Expression match found in PHP 3.0.9 and ahead. If you'd had a string like "321abcd*()123" and wanted the "321123" out you might have to loop over the preg_match. --Jesper

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