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  1. <?php
  2. $a = ['firstname' => 'Tom'];
  3. $b = ['lastname' => 'Sawyer'];
  4. $c = ['age' => 20];
  5.  
  6. var_dump(array_merge($a, $b, $c));
Success #stdin #stdout 0.02s 24448KB
stdin
Standard input is empty
stdout
array(3) {
  ["firstname"]=>
  string(3) "Tom"
  ["lastname"]=>
  string(6) "Sawyer"
  ["age"]=>
  int(20)
}