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<?php preg_match_all('/"([^(?<!\)"]*)"/', 'I should see text "\"status\":\"success\""', $out); var_dump($out);
Output for 4.3.0 - 5.6.28, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
array(2) { [0]=> array(3) { [0]=> string(3) ""\"" [1]=> string(4) "":\"" [2]=> string(2) """" } [1]=> array(3) { [0]=> string(1) "\" [1]=> string(2) ":\" [2]=> string(0) "" } }