array_splice « Data Structure « PHP

1.Inserting New Values to an Array: array array_splice(array $original, int $offset, int $length, array $new)
3.array_splice() function replaces the designated elements specified by the offset and the optional length input parameters with the elements in the optional array replacement_array.
4.Inserting New Values at an Arbitrary Point in an Indexed Array
5.array remove
6.Remove all elements from positions 3 to (n 3):
7.Remove a portion of the array and replace it with something else
8.Remove the fifth and sixth elements from the array:
9.Replace the third and fourth elements with new elements: