PHP array_slice() function

This tutorial will show you how to extract different elements from an array. PHP has a function called array_slice() for that.
Let’s declare an array to be used in our example:

<?php $users = array ('user1', 'user2', 'user3', 'user4', 'user5', 'user6'); ?><br /> If we want to display the first three elements of $users we write:<br /> PHP:<br /> <?php $first_3_users = array_slice($users, 0, 3); ?>

We will have in $first_3_users the first three elements from $users.

<?php $last_three_users = array_slice($users, 3, 3); ?>

Using the above code we can get the last three elements.
array_slice() has three parameters:

1. the array from which we want to extract the elements.
2. start position.
3. number of elements.

This function is very useful on pagination.
For example if we have a large array (hundreds of users or more) and we want to print 10 users on each page we can do:

<?php $page = 1; $nr_users_page = 10; $page_1 = array_slice($users, ($page - 1) * $nr_users_page, $nr_users_page); print_r($page_1); ?>

That’s it!