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  1. <?
  2. class Dummy{}
  3. class Test extends ArrayObject{
  4.         public function append(Dummy $value){
  5.                 parent::append($value);
  6.         }
  7.  
  8.         public function offsetSet($index,  $value){
  9.             parent::offsetSet($index,$value);
  10.         }
  11. }
  12.  
  13. $d = new Dummy();
  14. $t = new Test();
  15. $t->append($d);
  16. var_dump($t);
  17. //$t->append('a'); // throws error as expected
  18.  
Success #stdin #stdout 0.02s 13064KB
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Standard input is empty
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object(Test)#2 (1) {
  [0]=>
  object(Dummy)#1 (0) {
  }
}
https://ideone.com/vF1vQ6
language:
PHP (php 7.3.5)
created:
12 years ago
visibility:
public

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