How to delete an element from an PHP Array

Removing elements from PHP array

There are multiple was by which we can delete element from a PHP array.

unset()

Code:

$arraylist = [0 => "x", 1 => "y", 2 => "z"];
unset($arraylist[1]);  // Key which you want to delete
          

Output:

[
    [0] => x
    [2] => z
]

Unset doesn’t reset the array keys. In order to reset the array keys we will have to use array_values() after unset function.

array_splice()

Code:

$arraylist = [0 => "x", 1 => "y", 2 => "z"];
 array_splice($arraylist, 1, 1);  //(Array, offset, length)

Output:

[
    [0] => x
    [1] => z
]

It uses array offset and not the keys.

If you use array_splice() the keys will automatically be reindexed, but the associative keys won’t change — as opposed to array_values(), which will convert all keys to numerical keys.