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run code in 300+ PHP versions simultaneously
<?php class A { public $b; } class B { public $num; } $b = new B(); $b->num = 2; $a = new A(); $a->b = $b; print_r($a); $b->num = 4; print_r($a);
Output for git.master, git.master_jit, rfc.property-hooks
A Object ( [b] => B Object ( [num] => 2 ) ) A Object ( [b] => B Object ( [num] => 4 ) )

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