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<?php class A {} $a = new A(); $b = new A(); $a->m = $b; $b->m = $a; var_dump(serialize($a));
Output for git.master, git.master_jit, rfc.property-hooks
Deprecated: Creation of dynamic property A::$m is deprecated in /in/svVKT on line 8 Deprecated: Creation of dynamic property A::$m is deprecated in /in/svVKT on line 9 string(44) "O:1:"A":1:{s:1:"m";O:1:"A":1:{s:1:"m";r:1;}}"

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