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  1. <?php
  2.  
  3. // your code goes here
  4.  
  5. $c_arr = [
  6. 'or'=>[
  7. [ "or-1" ],
  8. [ "or-2" ],
  9. ]
  10. ];
  11.  
  12. $c_arr += [ "append" ];
  13.  
  14.  
  15. print_r($c_arr);
Success #stdin #stdout 0.01s 82560KB
stdin
Standard input is empty
stdout
Array
(
    [or] => Array
        (
            [0] => Array
                (
                    [0] => or-1
                )

            [1] => Array
                (
                    [0] => or-2
                )

        )

    [0] => append
)