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(PHP 5 >= 5.2.0)
ArrayObject::ksort — Sort the entries by key
Sorts the entries by key, maintaining key to entry correlations. This is useful mainly for associative arrays.
此函数没有参数。
没有返回值。
Example #1 ArrayObject::ksort() example
<?php
$fruits = array( "d" => "lemon" , "a" => "orange" , "b" => "banana" , "c" => "apple" );
$fruitArrayObject = new ArrayObject ( $fruits );
$fruitArrayObject -> ksort ();
foreach ( $fruitArrayObject as $key => $val ) {
echo " $key = $val \n" ;
}
?>
以上例程会输出:
a = orange b = banana c = apple d = lemon