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ksort
Sort an array by key
(PHP 4, PHP 5)
bool ksort ( array &array [, int sort_flags] )
Sorts an array by key, maintaining key to data correlations. This is useful mainly for associative arrays.
Returns TRUE on success or FALSE on failure.
Example 311. 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
You may modify the behavior of the sort using the optional parameter sort_flags, for details see sort().
See also asort(), arsort(), krsort(), uksort(), sort(), natsort(), and rsort().
Note:
The second parameter was added in PHP 4.