PHP array_merge_recursive() Function

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# PHP array_merge_recursive() Function

Complete PHP Array Reference

## Definition and Usage

The array_merge_recursive() function merges one ore more arrays into one array. The difference between this function ant the array_merge() function is when two or more array elements have the same key. Instead of override keys, the array_merge_recursivse() function makes the value as an array. (See example 1)

## Syntax

    array_merge_recursive(array1,array2,array3...)

Parameter | Description
--- | ---
array1 | Required. Specifies an array
array2 | Optional. Specifies an array.
array3 | Optional. Specifies an array

## Tips and Notes

Note: If you assign only one array to the array_merge_recursive() function, it will beahave exactly the same as the array_merge() function.

## Example

    <?php
    $a1=array("a"=>"Horse","b"=>"Dog");
    $a2=array("c"=>"Cow","b"=>"Cat");
    print_r(array_merge_recursive($a1,$a2));
    ?>

The output of the code above will be:

    Array (
    [a] => Horse
    [b] => Array ( [0] => Dog [1] => Cat )
    [c] => Cow
    )

Complete PHP Array Reference

From http://www.w3schools.com (Copyright Refsnes Data)