ksort

ksort -- Sort an array by key.

Description

int ksort(array array);

Sorts an array by key, maintaining key to data correlations. This is useful mainly for associative arrays.

Example 1. ksort() example

$fruits = array("d"=>"lemon","a"=>"orange","b"=>"banana","c"=>"apple");
ksort($fruits);
for(reset($fruits); $key = key($fruits); next($fruits)) {
    echo "fruits[$key] = ".$fruits[$key]."\n";
}
This example would display: fruits[a] = orange fruits[b] = banana fruits[c] = apple fruits[d] = lemon

See also asort(), arsort(), sort(), and rsort().