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  1. <?php
  2.  
  3. $arr1 = [['a' => 1, 'b' => 2], ['a' => 3, 'b' => 4], ['a' => 5, 'b' => 6]];
  4.  
  5. var_dump(array_merge(['c' => 'd'], $arr1));
Success #stdin #stdout 0.02s 24240KB
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array(4) {
  ["c"]=>
  string(1) "d"
  [0]=>
  array(2) {
    ["a"]=>
    int(1)
    ["b"]=>
    int(2)
  }
  [1]=>
  array(2) {
    ["a"]=>
    int(3)
    ["b"]=>
    int(4)
  }
  [2]=>
  array(2) {
    ["a"]=>
    int(5)
    ["b"]=>
    int(6)
  }
}
https://ideone.com/SrvE4C
language:
PHP (php 7.3.5)
created:
4 years ago
visibility:
public

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