PHP combine two associative arrays into one array
array_merge() is more efficient but there are a couple of options:
$array1 = array("id1" => "value1");$array2 = array("id2" => "value2", "id3" => "value3", "id4" => "value4");$array3 = array_merge($array1, $array2/*, $arrayN, $arrayN*/);$array4 = $array1 + $array2;echo '<pre>';var_dump($array3);var_dump($array4);echo '</pre>';// Results: array(4) { ["id1"]=> string(6) "value1" ["id2"]=> string(6) "value2" ["id3"]=> string(6) "value3" ["id4"]=> string(6) "value4" } array(4) { ["id1"]=> string(6) "value1" ["id2"]=> string(6) "value2" ["id3"]=> string(6) "value3" ["id4"]=> string(6) "value4" }
There is also array_replace, where an original array is modified by other arrays preserving the key => value association without creating duplicate keys.
- Same keys on other arrays will cause values to overwrite the original array
- New keys on other arrays will be created on the original array