What is the difference between using unset() and array_splice() to remove entries from an array in PHP?

When removing entries from an array in PHP, `unset()` is used to remove specific elements by their keys, while `array_splice()` is used to remove elements by their index positions. If you need to remove elements by their keys, use `unset()`. If you need to remove elements by their index positions, use `array_splice()`. 

// Using unset() to remove specific elements by their keys
$array = ['a', 'b', 'c', 'd'];
unset($array[1]); // Removes element with key 1 (b)

// Using array_splice() to remove elements by their index positions
$array = ['a', 'b', 'c', 'd'];
array_splice($array, 1, 1); // Removes 1 element starting from index 1 (b)

Keywords

unset array_splice array entries remove

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