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<?php class container { protected $storage=array(); public function add(test1 $obj) { if(!isset($this->storage[spl_object_hash($obj)])) { $this->storage[spl_object_hash($obj)]=$obj; } } } class test1 { public function __construct($s) { } } $o=new container(); $o->add(new test1("lalala")); // will be added $o->add(new test1("lololo")); // not added - NOT as expected $t=new test1("lalala"); $o=new container(); $o->add($t); // will be added $o->add($t); // not added - as expected var_dump($o);
Output for git.master, git.master_jit, rfc.property-hooks
object(container)#5 (1) { ["storage":protected]=> array(1) { ["00000000000000040000000000000000"]=> object(test1)#4 (0) { } } }

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