Splicing arrays and removing values

Ok, say i had an array, foo.
$foo = array ("a", "b", "c", "d", "e");
and i wanted to remove $foo[2] altogeter, so that foo would look like this:

$foo[0] = "a";
$foo[1] = "b";
$foo[2] = "d";
$foo[3] = "e";

how would i go about this? i cannot seem to nut out array_splice..... Please help me, im practically pulling my hair out.

(just posting a working example of array_splice that does this will be very helpfull)

fixed it some other way.

$item is the list of items
$food is what food to remove from the list
- $line is the array line the food is on

$line = array_search($food,$item);
$item[$line] = $item[$totallines - 1];

$thisnamedosentmatter = array_pop ($item);

if your searching for carrots, this will turn:

pie
candy
carrots
prunes
oranges

into:

pie
candy
oranges
prunes

(it replaces carrots with oranges, the last food on the list).

hope this is of future use to someone.