ArrayObject::asort
(PHP 5 >= 5.2.0, PHP 7, PHP 8)
ArrayObject::asort — Sort the entries by value
Descrizione
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
flagsmay 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_STRINGorSORT_NATURALto 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.
|
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
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