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<?php preg_match_all('/(\((?>(?!<br>|[()])++|(?=\()(?1))*+\))/is', 'this () is a ( test ) right here ((l);;) so yea', $result); var_dump($result);
Output for git.master, git.master_jit, rfc.property-hooks
array(2) { [0]=> array(1) { [0]=> string(2) "()" } [1]=> array(1) { [0]=> string(2) "()" } }

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