Question

I have a multidimensional array.

$shop = array( 
              array("appn1", "pub1" ,"pub2" , "pub3"),
              array("appn2", "pub1"),
              array("appn3", "pub1" ,"pub2")
            ); 

The first item in each array is application number and the rest in each array are the publication numbers. I get the first item(application number) and the last item of each array(latest publication number) like this

 $index = count(array_keys($shop));
    for($i=0;$i<$index;$i++){

        $appln_nr = $shop[$i][0];
        echo $appln_nr;

        $publn_nr_index = count(array_keys($shop[$i]))-1;
        $publn_nr = $shop[$i][$publn_nr_index];
        echo $publn_nr;
   }

Now I have application number and publication number for each inner array.

I want to create an associative array from the application numbers and publication numbers.

where the key should be the application number and its value is the publication number.

Thanks

EDIT

What I am getting from $shop array

 Array
 (
  [0] => Array
    (
        [0] => appn1
        [1] => pub1
        [2] => pub2
        [3] => pub3
    )

  [1] => Array
    (
        [0] => appn2
        [1] => pub1
    )

  [2] => Array
    (
        [0] => appn3
        [1] => pub1
        [2] => pub2
    )
)

And this is what I need in my associative array

Array(
    "appn1" => "pub3"
    "appn2" => "pub1"
    "appn3" => "pub2"
)

Answer 1

Finally i understood what you wanted, after your edit XD:

$shop = array(
    array("appn1", "pub1" ,"pub2" , "pub3"),
    array("appn2", "pub1"),
    array("appn3", "pub1" ,"pub2")
);
$shopNew = array();

foreach($shop as $value){
    $shopNew[$value[0]] = end($value);
}

// now if you want you can replace $shop and unset $shopNew
$shop = $shopNew;
unset($shopNew);    

print_r($shop); 

the output is this:

Array (
  [appn1] => pub3
  [appn2] => pub1
  [appn3] => pub2
)