ArrayObject::ksort
(PHP 5 >= 5.2.0, PHP 7)
ArrayObject::ksort — Sort the entries by key
Description
public ArrayObject::ksort ([ int $flags = SORT_REGULAR ] ) : void
Sorts the entries by key, maintaining key to entry correlations. This is useful mainly for associative arrays.
Parameters
-
flags
-
The optional second parameter
flags
may be used to modify the sorting behavior using these values:Sorting type flags:
-
SORT_REGULAR
- compare items normally; the details are described in the comparison operators section -
SORT_NUMERIC
- compare items numerically -
SORT_STRING
- compare items as strings -
SORT_LOCALE_STRING
- compare items as strings, based on the current locale. It uses the locale, which can be changed using setlocale() -
SORT_NATURAL
- compare items as strings using "natural ordering" like natsort() -
SORT_FLAG_CASE
- can be combined (bitwise OR) withSORT_STRING
orSORT_NATURAL
to sort strings case-insensitively
-
Return Values
No value is returned.
Examples
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"; } ?>
The above example will output:
a = orange b = banana c = apple d = lemon
See Also
- ArrayObject::asort() - Sort the entries by value
- ArrayObject::natsort() - Sort entries using a "natural order" algorithm
- ArrayObject::natcasesort() - Sort an array using a case insensitive "natural order" algorithm
- ArrayObject::uasort() - Sort the entries with a user-defined comparison function and maintain key association
- ArrayObject::uksort() - Sort the entries by keys using a user-defined comparison function
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Licensed under the Creative Commons Attribution License v3.0 or later.
https://www.php.net/manual/en/arrayobject.ksort.php