In PHP, we can delete an element from an array using the unset()function. Here are some examples of how to delete elements from an array in PHP:
### Example 1: Deleting an element with a known key
Suppose we have an array called $fruits that contains the names of some fruits, with their corresponding positions as keys:
$fruits = array(
0 => "apple",
1 => "banana",
2 => "orange",
3 => "pineapple"
);
1 which is "banana", we can use the unset() function like this:
unset($fruits[1]);
After running this code, the $fruits array will only contain three elements, without "banana".
### Example 2: Deleting an element with an unknown key
If we don't know the key of the element we want to delete, we can use a combination of array_search() and unset() functions to delete the element by its value.
Suppose we have an array called $numbers, and we want to remove the element that has the value "3":
$numbers = array(1, 2, 3, 4, 5);
array_search() to find the position of "3", and then use unset() to delete it:
$key = array_search(3, $numbers);
unset($numbers[$key]);
After running this code, the $numbers array will only contain four elements, without "3".