Take the two last element from array and deplace in begin of that array

Question

I have a array

Array ( [0] => elem0 [1] => elem1 [2] => elem2 [3] => elem3 [4] => elem4 )

I want take the two last element from array and deplace in begin of that array.

To obtain :

Array ( [0] => elem3 [1] => elem4 [2] => elem0 [3] => elem1 [4] => elem2 )

in PHP.

Edit

I found :

$pkeys= Array ( [0] => elem0 [1] => elem1 [2] => elem2 [3] => elem3 [4] => elem4 );
$output = array_slice($pkeys, -2, 2);
array_splice($pkeys, -2, 2);
$pkeys=array_merge($output,$pkeys);   
print_r ($pkeys);

result :

 Array ( [0] => elem3 [1] => elem4 [2] => elem0 [3] => elem1 [4] => elem2 )

It's OK!

Answer 1

Use array_pop() and array_unshift().

Example:

$stack = array("orange", "banana", "apple", "raspberry");
$last_element = array_pop($stack);
array_unshift($stack, $last_element);
print_r($stack);

PHP has many array functions. Take the time to browse them.

Answer 2

A lot of solution can do this , here is one possibility :

array_unshift($yourArray,$yourArray[count($yourArray)-2],$yourArray[count($yourArray)-1]);

array_pop($yourArray);

array_pop($yourArray);