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run code in 300+ PHP versions simultaneously
<?php var_dump(ini_get("pcre.backtrack_limit")); $a = "aa" . str_repeat("a", 2000000) . "TESTqqTEST"; echo strlen($a); var_dump(preg_match('/TEST.*TEST/sim', $a));
Output for 5.3.7 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 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" 2000012int(1)
Output for 5.2.0 - 5.2.17, 5.3.0 - 5.3.6
string(6) "100000" 2000012int(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) "" 2000012int(1)
preferences:
267.85 ms | 402 KiB | 398 Q