How can I merge PHP arrays?

Question

I have two arrays of animals (for example).

$array = array(
    array(
        \'id\' => 1,
        \'name\' => \'Cat\',
    ),
    array(
        \'id         


        

Answer 1

With PHP 5.3 you can do this sort of merge with array_replace_recursive()

http://www.php.net/manual/en/function.array-replace-recursive.php

You're resultant array should look like:

Array (
    [0] => Array
        (
            [id] => 2
            [name] => Cat
            [age] => 321
        )

    [1] => Array
        (
            [id] => 1
            [name] => Mouse
            [age] => 123
        )
)

Which is what I think you wanted as a result.

Answer 2

@Andy

http://se.php.net/array_merge

That was my first thought but it doesn't quite work - however array_merge_recursive might work - too lazy to check right now.

Answer 3

<?php
      $a = array('a' => '1', 'b' => array('t' => '4', 'g' => array('e' => '8')));
      $b = array('c' => '3', 'b' => array('0' => '4', 'g' => array('h' => '5', 'v' => '9')));
      $c = array_merge_recursive($a, $b);
      print_r($c);
?>

array_merge_recursive — Merge two or more arrays recursively

outputs:

        Array
(
    [a] => 1
    [b] => Array
        (
            [t] => 4
            [g] => Array
                (
                    [e] => 8
                    [h] => 5
                    [v] => 9
                )

            [0] => 4
        )

    [c] => 3
)

Answer 4

I would rather prefer array_splice over array_merge because of its performance issues, my solution would be:

<?php 
array_splice($array1,count($array1),0,$array2);
?>