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<?php $string="{1},[2],(3),<4>"; $string = preg_replace_callback('~([{[<])|[]}>]~', function ($m) { return !empty($m[1]) ? "(" : ")"; }, $string); echo $string;
Output for git.master, git.master_jit, rfc.property-hooks
(1),(2),(3),(4)

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