PHP Tutorial - PHP sort() Function
Definition
The sort() function sorts an indexed array in ascending order (alphabetically for letters, numerically for numbers, letters before numbers).
Syntax
PHP sort() Function has the following syntax.
sort(array,sortingtype);Parameter
| Parameter | Is Required | Description |
|---|---|---|
| array | Required. | Array to sort |
| sortingtype | Optional. | How to compare the array elements/items. |
Possible values for sortingtype:
| Value | Description |
|---|---|
| 0 = SORT_REGULAR | Default. Compare items normally (don't change types) |
| 1 = SORT_NUMERIC | Compare items numerically |
| 2 = SORT_STRING | Compare items as strings |
| 3 = SORT_LOCALE_STRING | Compare items as strings, based on current locale |
| 4 = SORT_NATURAL | Compare items as strings using natural ordering |
| 5 = SORT_FLAG_CASE | an be combined (bitwise OR) with SORT_STRING or SORT_NATURAL to sort strings case-insensitively |
Note
The values in the sorted arrays have different keys from the values in the original array.
The sort() and rsort() functions reindex the original array.
Example
<?php
$cars=array("A","B","C");
sort($cars);
$authors = array( "Java", "PHP", "CSS", "HTML" );
sort( $authors );
print_r( $authors );
?>
The code above generates the following result.
Example 2
Sort the elements of the $numbers array in ascending numerical order:
<?php
$numbers=array(4,6,2,22,11);
sort($numbers);
?>