The ksort() function sorts an array by key in ascending order. It returns TRUE on success or FALSE on failure.
Syntax
ksort(arr, flag)
Parameters
arr − The array to sort.
flag −
0 = SORT_REGULAR − Default. Compare items normally. Do not 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.
Return
The ksort() function returns TRUE on success or FALSE on failure.
Example
The following is an example
<?php
$product = array("headphone"=>"10", "mouse"=>"24", "pendrive"=>"13");
ksort($product);
foreach ($product as $key => $val) {
echo "$key = $val\n";
}
?>Output
headphone = 10 mouse = 24 pendrive = 13