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run code in 300+ PHP versions simultaneously
<?php $foo = []; define('SOME_CONSTANT', 'bar'); $foo⦋SOME_CONSTANT⦌ = 123; var_dump($foo[SOME_CONSTANT]);
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
Warning: Undefined array key "bar" in /in/KZqC3 on line 5 NULL
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: Undefined array key "bar" in /in/KZqC3 on line 5 NULL
Output for 7.0.0 - 7.0.20, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.31, 7.4.0 - 7.4.25, 7.4.27 - 7.4.33
Notice: Undefined index: bar in /in/KZqC3 on line 5 NULL
Output for 7.3.32 - 7.3.33, 7.4.26
NULL
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156.65 ms | 401 KiB | 203 Q