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<?php $ubbText = <<<TEXT [b]Hey[/b] [b]Hello[/b] TEXT; echo preg_replace_callback( "~\[b](.*?)\[/b]~si", function ($m) { static $counter = 0; return '<span class="b">' . (++$counter) . '. ' . $m[1] . '</span>'; }, $ubbText );
Output for git.master, git.master_jit, rfc.property-hooks
<span class="b">1. Hey</span> <span class="b">2. Hello</span>

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