ksort

(PHP 3, PHP 4 )

ksort -- Sort an array by key

Description

int ksort ( array array [, int sort_flags])

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

範例 1. ksort() example

$fruits = array ("d"= "lemon", "a"= "orange", "b"= "banana", "c"= "apple");
ksort ($fruits);
reset ($fruits);
while (list ($key, $val) = each ($fruits)) {
    echo "$key = $val\n";
}


This example would display:



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().

注: The second parameter was added in PHP 4.