PHP array_walk_recursive() Function

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# PHP array_walk_recursive() Function

Complete PHP Array Reference

## Definition and Usage

The array_walk_recursive() function runs each array element in a user-made function. The array's keys and values are parameters in the function. The difference between this function and the array_walk() function is that with this function you can work with deeper arrays (an array inside an array). Returns True or False

## Syntax

    array_walk_recursive(array,function,parameter)

Parameter | Description
--- | ---
array | Required. Specifying an array
function | Required. The name of the user-made function
parameter | Optional. Specifies a parameter to the user-made function

## Tips and Notes

Tip: You can assign one parameter to the function, or as many as you like.

## Example

    <?php
    function myfunction($value,$key)
    {
    echo "The key $key has the value $value<br />";
    }
    $a1=array("a"=>"Cat","b"=>"Dog");
    $a2=array($a1,"1"=>"Bird","2"=>"Horse");
    array_walk_recursive($a2,"myfunction");
    ?>

The output of the code above will be:

    The key a has the value Cat
    The key b has the value Dog
    The key 1 has the value Bird
    The key 2 has the value Horse

Complete PHP Array Reference

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