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run code in 300+ PHP versions simultaneously
<?php if (debug_backtrace()) { return new class { public $bar; public function bing($foo = null) { if ($foo) $foo->bing(); } }; } $oldFoo = require(__FILE__); $newFoo = require(__FILE__); var_dump(get_class_methods($oldFoo)); var_dump(get_object_vars($oldFoo)); $newFoo->bing($oldFoo);

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