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<?php class A { public $prop = 42; public function __set($x, $y) { echo "SET\n"; $this->$x = $y; } } $a = new A(); var_dump($a); unset($a->prop); echo "Wait for it ... "; $a->prop = 42;
Output for 7.1.25 - 7.1.32, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.19, 8.3.0 - 8.3.7
object(A)#1 (1) { ["prop"]=> int(42) } Wait for it ... SET

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90.77 ms | 403 KiB | 178 Q