3v4l.org

run code in 300+ PHP versions simultaneously
<?php declare(strict_types=0); var_dump("" == 0); var_dump("foo" == 0); var_dump("1foo" == 1); var_dump(" 1" == 1); var_dump("0001" == 1); var_dump(" 1 " == 1); var_dump("foo1" == 1);
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.30, 8.2.0 - 8.2.25, 8.3.0 - 8.3.4, 8.3.6 - 8.3.13
bool(false) bool(false) bool(false) bool(true) bool(true) bool(true) 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 bool(false) bool(false) bool(false) bool(true) bool(true) bool(true) bool(false)
Output for 7.3.0 - 7.3.33, 7.4.0 - 7.4.33
bool(true) bool(true) bool(true) bool(true) bool(true) bool(true) bool(false)
preferences:
54.9 ms | 408 KiB | 5 Q