php 二维数组按指定的键值排序
以前我们有讲过各种php数组排序的方法,同时php也提供了大量的数据排序函数,sort(),asort(),arsort()等,下面我来给各位同学介绍二维数组按指定的键值排序的方法。
具体实例
代码如下 | 复制代码 |
/*二维数组按指定的键值排序*/ |
使用方法:
比如:
代码如下 | 复制代码 |
$a=array( 1=>array( id=>1, price=>'79', ), 2=>array( id=>1, price=>'68', ), ); |
就使用:
代码如下 | 复制代码 |
array_sort($a,'price'); |
php数组排序函数
sort ( &$arr [,fruits] ) 对数组进行从低到高排序 ,并赋予新的键名 返回bool bKjia.c0m
rsort ( &$arr [,fruits] ) 对数组进行逆向排序 并赋予新的键名
asort ( &$arr [,fruits] ) 对数组进行排序 ,并保持索引不变
arsort( &$arr [,fruits] ) 对数组进行逆向排序 并保持索引不变
ksort ( &$arr [,fruits] ) 对数组按照键名进行排序
krsort( &$arr [,fruits] ) 对组数按照键名进行逆向排序
natsort( &$arr ) 对数组键值进行‘自然排序法’ 按照长度 字母排序等
natcasesort( &$arr ) 对数组进行不区分大小写的 ‘自然排名’
usort ( &$arr , cmp_function ) 用户自定义函数对一个数组进行排序 重新排列键名
uksort (&$arr , cmp_function ) 用户自定义函数对一个数组进行键名排序
uasort (&$arr , cmp_function) 用户自定义函数对数组进行排序 并保持索引不变
array_multisort( $arr , mixed)
第二个参数是 可以根据值改变排序行为
SORT_REGULAR 正常比较单元 SORT_NUMERIC www.bKjia.c0m 单元被作为数字来比较
SORT_STRING 单元被作为字符串来比较 SROT_LOCALE_STRING 根据当前的local 设置来把单元当做字符串比较

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