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<?php class A { var $p; } $a = new A; $b = $a; debug_zval_dump($a, $b); var_dump($a === $b); // bool(true) $b->p = 1; debug_zval_dump($a, $b); var_dump($a === $b); // bool(false)
Output for git.master, git.master_jit, rfc.property-hooks
object(A)#1 (1) refcount(4){ ["p"]=> NULL } object(A)#1 (1) refcount(4){ ["p"]=> NULL } bool(true) object(A)#1 (1) refcount(4){ ["p"]=> int(1) } object(A)#1 (1) refcount(4){ ["p"]=> int(1) } bool(true)

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