ksort
(PHP 4, PHP 5)
ksort — Sort an array by key
Description
bool ksort
( array &$array
[, int $sort_flags = SORT_REGULAR
] )
Sorts an array by key, maintaining key to data correlations. This is useful mainly for associative arrays.
Parameters
- array
-
The input array.
- sort_flags
-
You may modify the behavior of the sort using the optional parameter sort_flags, for details see sort().
Return Values
Returns TRUE on success or FALSE on failure.
Examples
Example #1 ksort() example
<?php
$fruits = array("d"=>"lemon", "a"=>"orange", "b"=>"banana", "c"=>"apple");
ksort($fruits);
foreach ($fruits as $key => $val) {
echo "$key = $val\n";
}
?>
The above example will output:
a = orange b = banana c = apple d = lemon
See Also
- asort() - Sort an array and maintain index association
- The comparison of array sorting functions