(PHP 4, PHP 5, PHP 7)
array_unshift — Prepend one or more elements to the beginning of an array
array_unshift() prepends passed elements to the front
of the array. Note that the list of elements is
prepended as a whole, so that the prepended elements stay in the same
order. All numerical array keys will be modified to start counting from
zero while literal keys won't be changed.
arrayThe input array.
...The values to prepend.
Returns the new number of elements in the array.
| Version | Description |
|---|---|
| 7.3.0 | This function can now be called with only one parameter. Formerly, at least two parameters have been required. |
Example #1 array_unshift() example
<?php
$queue = array("orange", "banana");
array_unshift($queue, "apple", "raspberry");
print_r($queue);
?>
The above example will output:
Array
(
[0] => apple
[1] => raspberry
[2] => orange
[3] => banana
)