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run code in 300+ PHP versions simultaneously
<?php class x { const A = [ 'a' => 'b', 'c' => 'd']; public function __construct() { if (isset(self::A['a'])) { echo 'xxx'; } } } new x();
Output for 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.27, 8.2.0 - 8.2.18, 8.3.0 - 8.3.4, 8.3.6
xxx
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 xxx
Output for 5.6.0 - 5.6.40
Fatal error: Cannot use isset() on the result of an expression (you can use "null !== expression" instead) in /in/q9EgT on line 8
Process exited with code 255.
Output for 5.5.0 - 5.5.38
Fatal error: Arrays are not allowed in class constants in /in/q9EgT on line 5
Process exited with code 255.

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