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<?php $string='Demo #1: (11 steps)[1] and Demo #2: (35 steps)[2]'; var_export(preg_match_all('~\(([^)]*)\)\[([^\]]*)]~',$string,$out,PREG_SET_ORDER)?$out:[]);
Output for git.master, git.master_jit, rfc.property-hooks
array ( 0 => array ( 0 => '(11 steps)[1]', 1 => '11 steps', 2 => '1', ), 1 => array ( 0 => '(35 steps)[2]', 1 => '35 steps', 2 => '2', ), )

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