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<?php $result = preg_replace('~\[(img|url)\](.*?)\[/\1\]~i', 'REPLACED', '[img]test[/img][not]img[/not][url]http][/url][img]second image[/img]'); echo $result;
Output for git.master, git.master_jit, rfc.property-hooks
REPLACED[not]img[/not]REPLACEDREPLACED

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