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<?php $text = 'say hello to @elise and @john'; function replace_at_symbol($matches){ $username = str_replace("@", "", $matches[0]); return '<a href="/profile/'.$username.'">'.$matches[0].'</a>';} $output = preg_replace_callback("/([@][a-zA-Z-0-9]+)/", "replace_at_symbol", $text); echo $output; ?>
Output for git.master, git.master_jit, rfc.property-hooks
say hello to <a href="/profile/elise">@elise</a> and <a href="/profile/john">@john</a>

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