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<?php preg_match('/a+?(*PRUNE:MARK_TEST)b/', 'aab', $matches); var_dump($matches);
Output for 7.2.0 - 7.2.33, 7.3.12 - 7.3.33, 7.4.0 - 7.4.11, 7.4.26 - 7.4.33, 8.0.13 - 8.0.30, 8.1.0 - 8.1.27, 8.2.0 - 8.2.17, 8.3.0 - 8.3.4
array(0) { }
Output for 5.6.8 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.20, 7.4.12 - 7.4.25, 8.0.0 - 8.0.12
array(2) { [0]=> string(2) "ab" ["MARK"]=> string(9) "MARK_TEST" }
Output for 5.3.4 - 5.3.29, 5.4.0 - 5.4.45, 5.5.24 - 5.5.35
array(1) { [0]=> string(2) "ab" }
Output for 5.2.5 - 5.2.17, 5.3.0 - 5.3.3
Warning: preg_match(): Compilation failed: (*VERB) with an argument is not supported at offset 10 in /in/6Ng14 on line 2 NULL
Output for 5.2.0 - 5.2.4
Warning: preg_match(): Compilation failed: nothing to repeat at offset 4 in /in/6Ng14 on line 2 NULL
Output for 4.3.11, 4.4.0 - 4.4.8, 5.0.0 - 5.0.5, 5.1.0 - 5.1.6
Warning: preg_match(): Compilation failed: nothing to repeat at offset 4 in /in/6Ng14 on line 2 array(0) { }
Output for 4.4.9
Warning: preg_match(): Compilation failed: (*VERB) with an argument is not supported at offset 10 in /in/6Ng14 on line 2 array(0) { }
Output for 4.3.0 - 4.3.10
Warning: Compilation failed: nothing to repeat at offset 4 in /in/6Ng14 on line 2 array(0) { }

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