php 根据数组中的指定键值排序，根据数组中指定键值分组
发布时间：2022-11-07 12:46:50 所属栏目：PHP教程 来源：
导读： 一、 根据数组中的指定键值排序
1.1 原数组如下：$person = array(
array('id'=>1,'name'=>'fj','weight'=>100,'height'=>180),
array('i
1.1 原数组如下：$person = array(
array('id'=>1,'name'=>'fj','weight'=>100,'height'=>180),
array('i
|
一、 根据数组中的指定键值排序 1.1 原数组如下：$person = array( array('id'=>1,'name'=>'fj','weight'=>100,'height'=>180), array('id'=>2,'name'=>'tom','weight'=>53,'height'=>150), array('id'=>3,'name'=>'jerry','weight'=>120,'height'=>156), array('id'=>4,'name'=>'bill','weight'=>110,'height'=>190), array('id'=>5,'name'=>'linken','weight'=>80,'height'=>200), array('id'=>6,'name'=>'madana','weight'=>95,'height'=>110), array('id'=>7,'name'=>'jordan','weight'=>70,'height'=>170) ); 1.2 排序代码 public function test($person){ $newArr = array(); foreach($person as $key=>$v){ $newArr[$key]['weight'] = $v['weight']; } array_multisort($newArr,SORT_ASC,$person);//SORT_DESC为降序，SORT_ASC为升序 dump($person); } 1.3 排序结果 array(7) { [0] => array(4) { ["id"] => int(2) ["name"] => string(3) "tom" ["weight"] => int(53) ["height"] => int(150) } [1] => array(4) { ["id"] => int(7) ["name"] => string(6) "jordan" ["weight"] => int(70) ["height"] => int(170) } [2] => array(4) { ["id"] => int(5) ["name"] => string(6) "linken" ["weight"] => int(80) ["height"] => int(200) } [3] => array(4) { ["id"] => int(6) ["name"] => string(6) "madana" ["weight"] => int(95) ["height"] => int(110) } [4] => array(4) { ["id"] => int(1) ["name"] => string(2) "fj" ["weight"] => int(100) ["height"] => int(180) } [5] => array(4) { ["id"] => int(4) ["name"] => string(4) "bill" ["weight"] => int(110) ["height"] => int(190) } [6] => array(4) { ["id"] => int(3) ["name"] => string(5) "jerry" ["weight"] => int(120) ["height"] => int(156) } } 0.0290s 二、根据数组中指定键值分组2.1 原数组如下： $arr = [ [ 'initial' => 'A', 'typename' => '陈端'], [ 'initial' => 'F', 'typename' =>'编程' ], [ 'initial' => 'F', 'typename' => '屌丝' ] ]; 2.2 分组代码 $result = []; //初始化一个数组 foreach($arr as $k=>$v){ $result[$v['initial']][] = $v; //根据initial 进行数组重新赋值 } dump($result);//result 就是分组之后的返回值 2.3 分组结果 array(2) { ["A"] => array(1) { [0] => array(2) { ["initial"] => string(1) "A" ["typename"] => string(6) "陈端" } } ["F"] => array(2) { [0] => array(2) { ["initial"] => string(1) "F" ["typename"] => string(6) "编程" } [1] => array(2) { ["initial"] => string(1) "F" ["typename"] => string(6) "屌丝" } } } （编辑：我爱资讯网） 【声明】本站内容均来自网络，其相关言论仅代表作者个人观点，不代表本站立场。若无意侵犯到您的权利，请及时与联系站长删除相关内容! |
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