3v4l.org

run code in 300+ PHP versions simultaneously
<?php $regex = '/(^aaaa)(.*(?=ab\K))/'; $subject = "aaaaxyzaabaa"; // Comment/uncomment below as wanted. // All 3 functions are vulnerable (note, other functions are affected as well) preg_match($regex,$subject,$x); var_dump($x);
Output for 5.4.45, 5.5.29 - 5.5.35, 5.6.13 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.20, 7.2.0 - 7.2.33, 7.3.16 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.27, 8.2.0 - 8.2.18, 8.3.0 - 8.3.4, 8.3.6
Warning: preg_match(): Get subpatterns list failed in /in/lo71e on line 8 array(0) { }
Output for 8.3.5
Warning: PHP Startup: Unable to load dynamic library 'sodium.so' (tried: /usr/lib/php/8.3.5/modules/sodium.so (libsodium.so.23: cannot open shared object file: No such file or directory), /usr/lib/php/8.3.5/modules/sodium.so.so (/usr/lib/php/8.3.5/modules/sodium.so.so: cannot open shared object file: No such file or directory)) in Unknown on line 0 Warning: preg_match(): Get subpatterns list failed in /in/lo71e on line 8 array(0) { }
Output for 5.4.2 - 5.4.44, 5.5.24 - 5.5.28, 5.6.8 - 5.6.12

Process exited with code 139.
preferences:
178.89 ms | 402 KiB | 225 Q