array_splice(): Modifying Arrays in PHP

The array_splice() function in PHP is used to remove, replace, or insert elements in an array. It modifies the original array, making it a versatile tool for array manipulation.

Syntax

array_splice(array &$array, int $offset, ?int $length = null, mixed $replacement = [])

• $array: The array to modify.
• $offset: The position at which to start the changes.
• $length (optional): The number of elements to remove. Defaults to removing all elements from the offset.
• $replacement (optional): Elements to insert at the offset position.

Example 1: Removing Elements from an Array

$fruits = ['apple', 'banana', 'cherry', 'date'];
array_splice($fruits, 1, 2);
print_r($fruits);

Array
(
    [0] => apple
    [1] => date
)

Example 2: Replacing Elements in an Array

$fruits = ['apple', 'banana', 'cherry', 'date'];
array_splice($fruits, 1, 2, ['mango', 'peach']);
print_r($fruits);

Array
(
    [0] => apple
    [1] => mango
    [2] => peach
    [3] => date
)

Example 3: Inserting Elements without Removing Any

$fruits = ['apple', 'banana', 'cherry', 'date'];
array_splice($fruits, 2, 0, ['grape', 'kiwi']);
print_r($fruits);

Array
(
    [0] => apple
    [1] => banana
    [2] => grape
    [3] => kiwi
    [4] => cherry
    [5] => date
)

Example 4: Removing All Elements After a Specific Position

$fruits = ['apple', 'banana', 'cherry', 'date'];
array_splice($fruits, 2);
print_r($fruits);

Array
(
    [0] => apple
    [1] => banana
)

Conclusion

The array_splice() function is a powerful tool for modifying arrays in PHP. Whether you need to remove, replace, or insert elements at specific positions, this function offers flexibility while modifying the original array directly.