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<?php preg_match_all('`{([^{}]+)}(\(((?>[^()]+|(?2))*)\))`', 'test {22413}(ghfhgfhg(())sd(d)sf) s{1}(l(k)l)dfdsf {5}(45d4fsdf4)', $match, PREG_SET_ORDER); $match = array_column($match, 3, 1); print_r($match);
Output for git.master, git.master_jit, rfc.property-hooks
Array ( [22413] => ghfhgfhg(())sd(d)sf [1] => l(k)l [5] => 45d4fsdf4 )

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