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<?php $re = '/(?:\bif\((?=[^()]*\))|\G(?!^))(.*?==.*?)(?:-(?:AND|OR)-|\)$)/'; $str = 'if(conditionA==valueA-AND-conditionB==valueB-OR-conditionC==valueC)'; preg_match_all($re, $str, $matches); print_r($matches[1]);
Output for 7.4.0 - 7.4.33, 8.0.1 - 8.0.30, 8.1.0 - 8.1.34, 8.2.0 - 8.2.32, 8.3.0 - 8.3.32, 8.4.1 - 8.4.23, 8.5.0 - 8.5.8
Array ( [0] => conditionA==valueA [1] => conditionB==valueB [2] => conditionC==valueC )

preferences:
100.06 ms | 1295 KiB | 4 Q