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<?php //$b = preg_replace('/b.*b/', '', 'baab' . str_repeat('a', 100024)); $b = preg_match('/(.)*/', str_repeat('x', 6000)); var_dump(ini_get('pcre.backtrack_limit'),ini_get('pcre.recursion_limit'), strlen($b));
Output for 5.3.7 - 5.3.9, 5.3.23 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.36, 5.6.0 - 5.6.28, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
string(7) "1000000" string(6) "100000" int(1)
Output for 7.0.0 - 7.0.20, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33
string(7) "1000000" string(6) "100000" int(0)
Output for 5.3.10 - 5.3.22

Process exited with code 139.
Output for 5.2.0 - 5.2.17, 5.3.0 - 5.3.6
string(6) "100000" string(6) "100000" int(1)
Output for 4.3.0 - 4.3.11, 4.4.0 - 4.4.9, 5.0.0 - 5.0.5, 5.1.0 - 5.1.6
string(0) "" string(0) "" int(1)
preferences:
278.32 ms | 402 KiB | 377 Q