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run code in 300+ PHP versions simultaneously
<?php $max_n=100010; $n=99900; $tmp_str=str_repeat('b',$n); $go=true; while (($go)&&($n<=$max_n)) { $n++; $tmp_str.='b'; $str='a'.$tmp_str.'a'; $go=preg_match('/a.*?a/sim', $str); if (!$go) { echo 'error on length '.strlen($str); die; } } echo ' ok';
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, 5.3.7 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.40, 7.0.0 - 7.0.33, 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 - 8.1.27, 8.2.0 - 8.2.17, 8.3.0 - 8.3.4
ok
Output for 5.2.0 - 5.2.17, 5.3.0 - 5.3.6
error on length 100000

preferences:
312.97 ms | 401 KiB | 456 Q