ArrayObject::asort
(PHP 5 >= 5.2.0, PHP 7)
ArrayObject::asort — Sort the entries by value
Description
public ArrayObject::asort ([ int $flags = SORT_REGULAR ] ) : void
Sorts the entries such that the keys maintain their correlation with the entries they are associated with. This is used mainly when sorting associative arrays where the actual element order is significant.
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::asort() example
<?php $fruits = array("d" => "lemon", "a" => "orange", "b" => "banana", "c" => "apple"); $fruitArrayObject = new ArrayObject($fruits); $fruitArrayObject->asort(); foreach ($fruitArrayObject as $key => $val) { echo "$key = $val\n"; } ?>
The above example will output:
c = apple b = banana d = lemon a = orange
The fruits have been sorted in alphabetical order, and the key associated with each entry has been maintained.
See Also
- ArrayObject::ksort() - Sort the entries by key
- 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.asort.php