二维数组排序
链接:http://blog.csdn.net/liruxing1715/article/details/28265495
二维数组排序。
- <?php
- /**
- * 二维数组根据某个字段排序
- * 功能:按照用户的年龄倒序排序
- * @author ruxing.li
- */
- header('Content-Type:text/html;Charset=utf-8');
- $arrUsers = array(
- array(
- 'id' => 1,
- 'name' => '张三',
- 'age' => 25,
- ),
- array(
- 'id' => 2,
- 'name' => '李四',
- 'age' => 23,
- ),
- array(
- 'id' => 3,
- 'name' => '王五',
- 'age' => 40,
- ),
- array(
- 'id' => 4,
- 'name' => '赵六',
- 'age' => 31,
- ),
- array(
- 'id' => 5,
- 'name' => '黄七',
- 'age' => 20,
- ),
- );
- $sort = array(
- 'direction' => 'SORT_DESC', //排序顺序标志 SORT_DESC 降序;SORT_ASC 升序
- 'field' => 'age', //排序字段
- );
- $arrSort = array();
- foreach($arrUsers AS $uniqid => $row){
- foreach($row AS $key=>$value){
- $arrSort[$key][$uniqid] = $value;
- }
- }
- if($sort['direction']){
- array_multisort($arrSort[$sort['field']], constant($sort['direction']), $arrUsers);
- }
- var_dump($arrUsers);
- /*
- 输出结果:
- array (size=5)
- 0 =>
- array (size=3)
- 'id' => int 5
- 'name' => string '黄七' (length=6)
- 'age' => int 20
- 1 =>
- array (size=3)
- 'id' => int 2
- 'name' => string '李四' (length=6)
- 'age' => int 23
- 2 =>
- array (size=3)
- 'id' => int 1
- 'name' => string '张三' (length=6)
- 'age' => int 25
- 3 =>
- array (size=3)
- 'id' => int 4
- 'name' => string '赵六' (length=6)
- 'age' => int 31
- 4 =>
- array (size=3)
- 'id' => int 3
- 'name' => string '王五' (length=6)
- 'age' => int 40
- */