Descrizione

public ArrayObject::asort(int $flags = SORT_REGULAR): true

Sorts the entries in ascending order, such that its keys maintain their correlation with the values they are associated with.

This is used mainly when sorting associative arrays where the actual element order is significant.

Nota:
If two members compare as equal, they retain their original order. Prior to PHP 8.0.0, their relative order in the sorted array was undefined.

Elenco dei parametri

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) with SORT_STRING or SORT_NATURAL to sort strings case-insensitively

Valori restituiti

Always returns true.

Log delle modifiche

Versione Descrizione

8.2.0 The return type is true now; previously, it was bool.

Versione	Descrizione
8.2.0	The return type is `true` now; previously, it was bool.

Esempi

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";
}
?>

Il precedente esempio visualizzerà:

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.

Vedere anche:

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
asort() - Ordina un array e mantiene le associazioni degli indici