If you want to modify the size of an array, larger or smaller than its current size, use array_pad() and array_splice() function.

How to make an array grow:

/***** start with 2 elements *****/
$array = array(’element1′, ‘element2′);

/***** grow to 4 elements *****/
$array = array_pad($array, 4, ”);

How to reduce an array:

/***** shrink to three elements ***** /
array_splice($array, 3);
or
/***** remove last element, equivalent to array_pop( ) *****/
array_splice($array, -1);