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run code in 300+ PHP versions simultaneously
<?php class foo { static public $params = []; function init() { self::$params['func'] = function () { return 'yay'; }; } } class bar extends foo { function __construct() { parent::init(); echo parent::$params['func'](); } } new bar();
Output for 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.34, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.33, 8.2.0 - 8.2.29, 8.3.0 - 8.3.25, 8.4.1 - 8.4.12
yay
Output for 5.5.0 - 5.5.38, 5.6.0 - 5.6.40
Notice: Undefined variable: params in /in/rt6FT on line 16 Fatal error: Function name must be a string in /in/rt6FT on line 16
Process exited with code 255.

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