PHP Delete Array Items
Remove Array Item
To remove an existing item from an array, you can use the unset() function.
The unset() function deletes specified variables, and can therefor be used to
delete array items:
Example
Remove the second item:
$cars = array("Volvo", "BMW", "Toyota");
unset($cars[1]);
Remove Multiple Array Items
The unset() function takes a unlimited number of arguments, and
can therefor be used to delete multiple array items:
Example
Remove the first and the second item:
$cars = array("Volvo", "BMW", "Toyota");
unset($cars[0], $cars[1]);
Note: The unset() function will NOT re-arrange the indexes,
and the examples above will no longer contain the missing indexes.
Using the array_splice Function
If you want the array to re-arrange the indexes, you can use the array_splice() function.
With the array_splice() function you specify the index (where to start)
and how many items you want to delete.
Example
Remove the second item:
$cars = array("Volvo", "BMW", "Toyota");
array_splice($cars, 1, 1);
After the deletion, the array gets reindexed automtically, starting at index 0.
Remove Item From an Associative Array
To remove items from an associative array, you can use unset() function like
before, but
referring to the key name instead of index.
Example
Remove the "model":
$cars = array("brand" => "Ford", "model" => "Mustang", "year" => 1964);
unset($cars["model"]);