Answers for "php concatenate 2 arrays"

php merge 2 arrays

<?php
  $array1 = [
      "color" => "green"
  ];
  $array2 = [
      "color" => "red", 
      "color" => "blue"
  ];
  $result = array_merge($array1, $array2);
?>

// $result
[
    "color" => "green"
    "color" => "red", 
    "color" => "blue"
]

php combine values of two arrays

$all_arrays = array_merge($array1, $array2, $array3, ...);

php array merge

array_merge ([ array $... ] ) : array