PHP Reference

Quick Reference

The PHP array_reverse() function returns an array in the reverse order.

If the optional preserve_keys is set to true, numeric keys are preserved. Non-numeric keys are not affected by this setting and will always be preserved.

<?php
$a = array('Lamborghini', 'Ferrari', 'Maserati');
print_r(array_reverse($a, true));
?>

Note

Arrays count starting from zero NOT one. So item 1 is position [0], item 2 is position [1], and item 3 is position [2] … and so on.

Output

Array ( [2] => Maserati [1] => Ferrari [0] => Lamborghini )

Syntax

array_reverse(array, preserve_keys)

Parameters

ParameterDescription
arraySpecifies an array (required)
preserve_keysSpecifies if the function should preserve the numeric keys of the array or not; non-numeric keys are not affected by this setting and will always be preserved

  • true

  • false (default)


PHP Notes:

  • When using PHP, single or double quotation marks are acceptable and work identically to one another; choose whichever you prefer, and stay consistent
  • Arrays count starting from zero NOT one; so item 1 is position [0], item 2 is position [1], and item 3 is position [2] … and so on

We’d like to acknowledge that we learned a great deal of our coding from W3Schools and TutorialsPoint, borrowing heavily from their teaching process and excellent code examples. We highly recommend both sites to deepen your experience, and further your coding journey. We’re just hitting the basics here at 1SMARTchicken.