International PHP Conference 2019 - Spring Edition

ArrayObject::asort

(PHP 5 >= 5.2.0, PHP 7)

ArrayObject::asortSort the entries by value

说明

public void ArrayObject::asort ( 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.

参数

此函数没有参数。

返回值

没有返回值。

范例

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";
}
?>

以上例程会输出:

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.

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