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  1. <?php
  2.  
  3. $a = array_merge([1,2,3,4,5], [1,2,3,4,5]);
  4. sort($a);
  5. print_r($a);
Success #stdin #stdout 0.02s 24172KB
stdin
Standard input is empty
stdout
Array
(
    [0] => 1
    [1] => 1
    [2] => 2
    [3] => 2
    [4] => 3
    [5] => 3
    [6] => 4
    [7] => 4
    [8] => 5
    [9] => 5
)