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run code in 300+ PHP versions simultaneously
<?php class A { public function __construct( public readonly int $a = 5, ) { echo 2; yield; echo 3; } } class B extends A { public function __construct(int $a) { echo 1; parent::__construct($a); echo 4; } } echo (new B(6))->a;
Output for git.master, git.master_jit
146

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