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run code in 300+ PHP versions simultaneously
<?php declare(strict_types=1); $foo = new stdClass(); $foo->{"0"} = false; $foo->{0} = true; $foo = (array)$foo; echo json_encode($foo); // {"0":false,"0":true}
Output for 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 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.4, 8.3.6
[true]
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 [true]
Output for 7.0.0 - 7.0.20, 7.1.0 - 7.1.20
{"0":true}
Output for 5.5.0 - 5.5.38, 5.6.0 - 5.6.28
Warning: Unsupported declare 'strict_types' in /in/9OlIZ on line 2 {"0":true}

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