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<?php $re = '/(\((?:[^()]++|(?1))*\))(*SKIP)(*F)|,\h*/'; $strings = [ "Test A, Test B, Test C (data1, data1)", "Test A, Test B, Test C (data1, data1), Test D (data1, data1), Test E (data1, data1(data, data))", "Test A, Test B, Test C (data1, data1), Test D (data1, data1), Test E ((data1, data1))" ]; foreach($strings as $s) { print_r(preg_split($re, $s)); }
Output for git.master, git.master_jit, rfc.property-hooks
Array ( [0] => Test A [1] => Test B [2] => Test C (data1, data1) ) Array ( [0] => Test A [1] => Test B [2] => Test C (data1, data1) [3] => Test D (data1, data1) [4] => Test E (data1, data1(data, data)) ) Array ( [0] => Test A [1] => Test B [2] => Test C (data1, data1) [3] => Test D (data1, data1) [4] => Test E ((data1, data1)) )

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