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<?php function bool2str($bool) { if ($bool === false) { return 'FALSE'; } else { return 'TRUE'; } } function compareObjects(&$o1, &$o2) { echo 'o1 != o2 : ' . bool2str($o1 instanceof $o2) . "\n"; } class Flag { public $flag; function Flag($flag = true) { $this->flag = $flag; } } class OtherFlag { public $flag; function OtherFlag($flag = true) { $this->flag = $flag; } } $o = new Flag(); $p = new Flag(); $q = $o; $r = new OtherFlag(); compareObjects($o, $p); echo "\nЭкземпляры двух разных классов\n"; compareObjects($o, $r);
Output for git.master, git.master_jit, rfc.property-hooks
o1 != o2 : TRUE Экземпляры двух разных классов o1 != o2 : FALSE

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