<?php $text = "Hello, http://jsfiddle.net/uyuouyvz/ this is a test for jsfiddle.net"; $preg = "%(http://(www.)?[jsfiddle].net/\w+?(/\d+)?(/.*)?)%im"; $text = preg_replace_callback($preg, function($match) { return "<iframe src=\"{$match[0]}\"></iframe>"; }); echo $text;
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