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<?php $text = "This is a #hashtag within some #awesometext."; $newText = preg_replace("/#(\w+)/", "<a href='category.php?tag=$1'>#$1</a>", $text); echo $newText;
Output for git.master, git.master_jit, rfc.property-hooks
This is a <a href='category.php?tag=hashtag'>#hashtag</a> within some <a href='category.php?tag=awesometext'>#awesometext</a>.

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