PHP array_reverse() Function
Example
Return the array in the reverse order of elements:
<?php
$a = array("a" => "Volvo", "b" => "BMW", "c" => "Toyota");
print_r(array_reverse($a));
?>
Definition and Usage
The array_reverse() function returns the array in the reverse order of elements.
Description
The array_reverse() function reverses the order of elements in the original array, creates a new array, and returns it.
If the second parameter is specified as true, the element keys remain unchanged; otherwise, the keys will be lost.
Syntax
array_reverse(array,preserve)
| Parameter | Description |
|---|---|
| array | Required. Specifies the array. |
| preserve |
Optional. Specifies whether to preserve the original array keys. This parameter is added in PHP 4.0.3. Possible Values:
|
Technical Details
| Return Value: | Return the reversed array. |
| PHP Version: | 4+ |
| Update Log: | Added in PHP 4.0.3 preserve Parameters. |
More Examples
Example 1
Return the original array, reverse the array, and return the reversed array with the original array keys:
<?php
$a = array("Volvo", "XC90", array("BMW", "Toyota"));
$reverse = array_reverse($a);
$preserve=array_reverse($a, true);
print_r($a);
print_r($reverse);
print_r($preserve);
?>
