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PHP: array_reverse() function

PHP: Create an array with elements in reverse order

The array_reverse() function is used to reverse the order of the elements in an array.

Version:

(PHP 4 and above)

Syntax:

array_reverse(array_name, preserve_keys)

Parameter:

Name Description Required /
Optional		 Type
array_name Specifies the name of the array. Required Array
preserve_keys Specify TRUE or FALSE whether function shall preserve the array's keys or not. The default value is FALSE. Optional Boolean

Return value:

The reversed array.

Value Type: Array

Example:

<?php
$a= array(1,2,3,4,5);
$x = array_reverse($a,true);
$y = array_reverse($a);
print_r($x);
echo '</br> ';
print_r($y);
?>

Output:

Array ([4] => 5 [3] => 4 [2] => 3 [1] => 2 [0] => 1) 

Array ([0] => 5 [1] => 4 [2] => 3 [3] => 2 [4] => 1)

Pictorial Presentation:

php function reference: array_reverse() function

View the example in the browser

Practice here online :

See also

PHP Function Reference

Previous: array_reduce
Next: array_search



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PHP: Tips of the Day

Filters the collection using the given callback

Example:

<?php
function tips_reject($items, $func)
{
  return array_values(array_diff($items, array_filter($items, $func)));
}

print_r(tips_reject(['Apple', 'Pear', 'Kiwi', 'Banana'], function ($item) {
  return strlen($item) > 4;
}));
?>

Output:

Array
(
    [0] => Pear
    [1] => Kiwi
)