對于PHP學習者來說，數組是一個非常重要的知識點，所謂數組就是能夠在單獨的變量名中存儲一個或多個值。索引數組即帶有數字索引的數組，關聯數組即帶有指定鍵的數組，多維數組即包含一個或多個數組的數組。

下面我們就通過簡單的示例為大家介紹關聯數組進行各種排序的方法。

代碼示例如下：

<?php
echo "Associative array : Ascending order sort by value";
$array2=array("Sophia"=>"31","Jacob"=>"41","William"=>"39","Ramesh"=>"40"); 
asort($array2);
foreach($array2 as $y=>$y_value)
{
echo "Age of ".$y." is : ".$y_value."
";
}
echo "Associative array : Ascending order sort by Key";
$array3=array("Sophia"=>"31","Jacob"=>"41","William"=>"39","Ramesh"=>"40"); 
ksort($array3);
foreach($array3 as $y=>$y_value)
{
echo "Age of ".$y." is : ".$y_value."";
}
echo "Associative array : Descending order sorting by Value";
$age=array("Sophia"=>"31","Jacob"=>"41","William"=>"39","Ramesh"=>"40");
arsort($age);
foreach($age as $y=>$y_value)
{
echo "Age of ".$y." is : ".$y_value."";
}
echo "Associative array : Descending order sorting by Key";
$array4=array("Sophia"=>"31","Jacob"=>"41","William"=>"39","Ramesh"=>"40"); 
krsort($array4);
foreach($array4 as $y=>$y_value)
{
echo "Age of ".$y." is : ".$y_value."
";
} 
?>

輸出結果如下：

1、按值升序

Associative array : Ascending order sort by value   
Age of Sophia is : 31                                       
Age of William is : 39                                      
Age of Ramesh is : 40                                       
Age of Jacob is : 41

2、按照鍵名對關聯數組進行升序排序：

Associative array : Ascending order sort by Key    
Age of Jacob is : 41                                        
Age of Ramesh is : 40                                       
Age of Sophia is : 31                                       
Age of William is : 39

3、按值降序

Associative array : Descending order sorting by Value 
Age of Jacob is : 41                                        
Age of Ramesh is : 40                                       
Age of William is : 39                                      
Age of Sophia is : 31

4、按照鍵名對關聯數組進行降序排序：

Associative array : Descending order sorting by Key 
Age of William is : 39                                      
Age of Sophia is : 31                                       
Age of Ramesh is : 40  
Age of Jacob is : 41

相關函數介紹：

arsort() 函數對關聯數組按照鍵值進行降序排序。

asort() 函數對關聯數組按照鍵值進行升序排序。

krsort() 函數對關聯數組按照鍵名進行降序排序。

ksort() 函數對關聯數組按照鍵名進行升序排序。

本篇文章就是關于關聯數組的排序方法介紹，希望對需要的朋友有所幫助！

以上就是PHP怎么給關聯數組進行排序？（代碼示例）的詳細內容，更多請關注php中文網其它相關文章！