sort multidimension array by its keys and then by its value

Question

I want to sort two dimension array but its keys and its values. Array is like this

    Array
(
    [0] => Array
        (
            [Transport] => imagem3.png
        )

    [1] => Array
        (
            [Transport] => imagem2.png
        )

    [2] => Array
        (
            [Transport] => imagem1.png
        )

    [3] => Array
        (
            [First] => dscn2439.jpg
        )

    [4] => Array
        (
            [First] => dscn2454.jpg
        )

    [5] => Array
        (
            [First] => 06052010282.jpg
        )

    [6] => Array
        (
            [First] => dscn2357.jpg
        )

    [7] => Array
        (
            [Manufacture] => 120140220_191807.jpg
        )

    [8] => Array
        (
            [Manufacture] => 20140220_191429.jpg
        )
)

I have sorted array of array by its keys but what I want to do is I want to array like this

<?php Array
(
[0] => Array
    (
        [Transport] => imagem1.png
    )

[1] => Array
    (
        [Transport] => imagem2.png
    )

[2] => Array
    (
        [Transport] => imagem3.png
    )

[3] => Array
    (
       [First] => dscn2357.jpg
    )

[4] => Array
    (
        [First] => dscn2439.jpg
    )

[5] => Array
    (
         [First] => dscn2454.jpg
    )

[6] => Array
    (
       [First] => 06052010282.jpg
    )

[7] => Array
    (
        [Manufacture] => 120140220_191807.jpg
    )

[8] => Array
    (
        [Manufacture] => 20140220_191429.jpg
    )
 )
 ?>

I have sorted by its keys I am not able to sort by value please help what I have to do

function getListPortfolio($params){

        $dir ='./images/portfolio/';
        // Open a directory, and read its contents
        $folderArray=array();
        $fileArray=array();
        $extArray=array('.jpg', '.jpeg', '.png', '.gif');
        if (is_dir($dir)){
          if ($dh = opendir($dir)){
            while (($subdir = readdir($dh)) !== false){             
                if(is_dir($dir.$subdir)){
                    if(!($subdir=='.' || $subdir=='..')){
                         $folderArray[]=$subdir;
                    }
                }
            }

            arsort($folderArray);
            foreach($folderArray as $key=>$value){
                if($dhSub = opendir($dir.$value)){
                     while (($files = readdir($dhSub)) !== false){
                        $fileExists=$dir.$value.'/'.$files;
                        if(exif_imagetype($fileExists)){
                            if(is_file($fileExists)){
                                $fileArray[][$value]=$files;                                        
                            }
                        }
                     }
                }
            }
            closedir($dh);
          }
        }
        return $fileArray;
    }

I want dir in key and files in value.

Solve:

function getListPortfolio($params){

        $dir ='./images/portfolio/';
        // Open a directory, and read its contents
        $folderArray=array();
        $fileArray=array();
        $data=array();
        $extArray=array('.jpg', '.jpeg', '.png', '.gif');
        if (is_dir($dir)){
          if ($dh = opendir($dir)){
            while (($subdir = readdir($dh)) !== false){             
                if(is_dir($dir.$subdir)){
                    if(!($subdir=='.' || $subdir=='..')){
                         $folderArray[]=$subdir;
                    }
                }
            }

            arsort($folderArray);
            foreach($folderArray as $key=>$value){
                if($dhSub = opendir($dir.$value)){
                     while (($files = readdir($dhSub)) !== false){
                        $fileExists=$dir.$value.'/'.$files;
                        if(exif_imagetype($fileExists)){
                            if(is_file($fileExists)){
                                $fileArray[]=$files;                                        
                            }
                        }
                     }
                     asort($fileArray);
                     foreach($fileArray as $index=>$filename){
                         $data[][$value]=$filename;
                     }

                }
            }
            closedir($dh);
          }
        }
        return $fileArray;
    }

Array will look like this and i want to sort array [transport]=> imagem2.jpg ' value not [0] this index.

Array
( [0] => Array ( [Transport] => imagem1.png )

[1] => Array
    (
        [Transport] => imagem2.png
    )

[2] => Array
    (
        [Transport] => imagem3.png
    )

[3] => Array
    (
       [First] => dscn2357.jpg
    )

[4] => Array
    (
        [First] => dscn2439.jpg
    )

[5] => Array
    (
         [First] => dscn2454.jpg
    )
)

Answer 1

Use this :

call a sorting function and store the return sorted array in a variable $sorted_array

$sorted_array = sortArray($result, $p_sort_field );

Sorting function :

<?php

function sortArray($arrData, $p_sort_field, $p_sort_type = false )
{
 if(!empty($arrData))
 {
  foreach($arrData as $data)
  {
   $newData [] = $data;
  }
  for($i=0; $i<count($newData); $i++)
  {                       
    $ar_sort_field[$i]=$newData[$i][$p_sort_field];
  }
  array_multisort($ar_sort_field, ($p_sort_type ? SORT_DESC : SORT_ASC), $newData);   
  return $newData;
 }
}

?>

In $result pass your actual array and in $p_sort_field pass the field name you want to sort.

Answer 2

So you want to sort your array by value. What don't you use usort like this:

function cmp($a, $b)
{
    if ($a == $b)
        return 0;
    return ($a < $b) ? -1 : 1;
}

usort($arr, 'cmp');

print_r($arr);

$arr being the array you want to sort.