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stripping all non alpha-numeric characters from string


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#1 bcamp1973

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Posted 23 August 2006 - 05:07 PM

ok, i want to strip all instances of "\r\n", "\r", "\n","\t" and non-alpha numeric characters from a string. in my searching through the PHP manual there seems to be a lot of options...such as str_replace, preg_replace(), ereg_replace() etc. i need something that's fast an efficient and i'm guessing i'll have to use regex of some form but it's not something i'm very knowledgable of.  any suggestions?

#2 Caesar

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Posted 23 August 2006 - 06:57 PM

Take the reverse approach, only match those characters you want to retrieve. ;-)
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#3 obsidian

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Posted 23 August 2006 - 07:56 PM

i like this approach:
<?php
$String = preg_replace('|[^a-z0-9]|i', '', $String);
echo $String;
?>

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