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<?php preg_match_all('`{([^{}]+)}((?<=\()(?>[^()]+|(?2))*(?=\)))`', 'test {22413}(ghfhgfhg(())sd(d)sf) s{1}(l(k)l)dfdsf {5}(45d4fsdf4)', $m); print_r($m);
Output for git.master, git.master_jit, rfc.property-hooks
Array ( [0] => Array ( ) [1] => Array ( ) [2] => Array ( ) )

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