[摘要]本篇文章主要给大家介绍如何用PHP给关联数组进行排序。对于PHP学习者来说，数组是一个非常重要的知识点，所谓数组就是能够在单独的变量名中存储一个或多个值。索引数组即带有数字索引的数组，关联数组即带有...
本篇文章主要给大家介绍如何用
PHP给关联数组进行排序。
对于PHP学习者来说，数组是一个非常重要的知识点，所谓数组就是能够在单独的变量名中存储一个或多个值。索引数组即带有数字索引的数组，关联数组即带有指定键的数组，多维数组即包含一个或多个数组的数组。
下面我们就通过简单的示例为大家介绍关联数组进行各种排序的方法。
代码示例如下：
<?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."
";
}
?>