What is array_unshift in PHP?

The PHP’s array_unshift function is used to add elements to the beginning or staring of an array. As with PHP array_push, pass the array first, followed by any number of elements you would like to add to the array. Arrays with numeric indexes have those indexes re-numbered starting from 0 (zero).

How to add values to an array in PHP?

However, a much simpler way of doing things is just to use the PHP function array_sum (), which adds up all of the values in the array. Because this is done by the PHP engine it should take less time than using a for loop.

What does array_push do in JavaScript?

The array_push () function inserts one or more elements to the end of an array. Tip: You can add one value, or as many as you like. Note: Even if your array has string keys, your added elements will always have numeric keys (See example below). array_push ( array, value1, value2, ... ) Required. Specifies an array Optional.

How to use array_splice function in PHP?

Suppose that when you wish or want to use the array_splice function in PHP to add elements to an array, but not to remove or replace, then pass 0 as the 3rd argument because this function supports a negative offset which allows or permit you to specify a location starting or beginning from the end of the array.