ksort
(PHP 4, PHP 5)
ksort — Sort an array by key
Description
bool ksort
( array &$array
[, int $sort_flags
] )
Sorts an array by key, maintaining key to data correlations. This is useful mainly for associative arrays.
如果成功則回傳 TRUE,失敗則回傳 FALSE。
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";
}
?>
上例將輸出:
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.