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run code in 300+ PHP versions simultaneously
<?php interface response { public function getResponseClass(); } class foo implements response { public $type = 'foo'; public function getResponseClass() { return 'hello'; } } class bar implements response { public $type = 'bar'; public function getResponseClass() { return 'world'; } } class hello { } class world { } class process { public function test1($a) { switch ($a->type) { case 'foo': return new hello(); case 'bar': return new world(); } } public function test2($a) { return $a->getResponseClass(); } } $p = new process; var_dump($p->test1(new bar())); var_dump($p->test2(new bar()));

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40.73 ms | 402 KiB | 5 Q