3v4l.org

run code in 300+ PHP versions simultaneously
<?php $sub = substr('abcdef', 4, -4); if ($sub === false) { echo 'fail'; } else { echo 'do somthing with $sub'; }
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.4, 8.3.6
do somthing with $sub
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 do somthing with $sub
Output for 7.3.0 - 7.3.33, 7.4.0 - 7.4.33
fail
preferences:
166.77 ms | 402 KiB | 150 Q