Flip multidimensional array in PHP

In this post you learn that how to flip a multidimensional array in php. Below function to accomplish the your task.

<?php
/*
Online PHP Examples with Source Code
website: http://4evertutorials.blogspot.in/
*/

function multi_array_flip($arrayIn, $DesiredKey, $DesiredKey2=false, $OrigKeyName=false) { 
$ArrayOut=array(); 
foreach ($arrayIn as $Key=>$Value) 
    { 
        // If there is an original key that need to be preserved as data in the new array then do that if requested ($OrigKeyName=true) 
        if ($OrigKeyName) $Value[$OrigKeyName]=$Key; 
        // Require a string value in the data part of the array that is keyed to $DesiredKey 
        if (!is_string($Value[$DesiredKey])) return false; 

        // If $DesiredKey2 was specified then assume a multidimensional array is desired and build it 
        if (is_string($DesiredKey2)) 
        { 
            // Require a string value in the data part of the array that is keyed to $DesiredKey2 
            if (!is_string($Value[$DesiredKey2])) return false; 

            // Build NEW multidimensional array 
            $ArrayOut[$Value[$DesiredKey]][$Value[$DesiredKey2]]=$Value; 
        } 

            // Build NEW single dimention array 
        else $ArrayOut[$Value[$DesiredKey]][]=$Value; 
    } 
return $ArrayOut; 
}//end multi_array_flip 

?>

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