3v4l.org

run code in 300+ PHP versions simultaneously
<?php // warning: var_dump(preg_match('not a regex', '')); // no warning: var_dump(@preg_match('also not a regex', ''));
Output for 8.2.0 - 8.2.25, 8.3.0 - 8.3.4, 8.3.6 - 8.3.13
Warning: preg_match(): Delimiter must not be alphanumeric, backslash, or NUL in /in/1SZcm on line 4 bool(false) bool(false)
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(): Delimiter must not be alphanumeric, backslash, or NUL in /in/1SZcm on line 4 bool(false) bool(false)
Output for 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.30
Warning: preg_match(): Delimiter must not be alphanumeric or backslash in /in/1SZcm on line 4 bool(false) bool(false)
preferences:
83.98 ms | 409 KiB | 5 Q