php合并两个二维数组，二维数组按键名排序，删除二维数组元素，二维数组按相同字段合并）

来源：互联网发布：淘宝买卖交易平台编辑：程序博客网时间：2024/06/05 11:40

一、两个二维数组的合并

$a=Array(0 => Array("id" => 66,"class_name" => "www.iiwnet.com"),1 => Array("id" => 67,"class_name" => "linux" ));$b=Array(0 => Array("class_count"=> 8),1 => Array("class_count" => 2));

方法一：

php提供了一个方便的函数：

array_merge_recursive($as_activity,$array['data']['as_activity']);//合并两个数组

方法二：

自己手动实现

$arr2 = array();             $n = 0;        foreach($a as $k => $v){        foreach($v as $k1 => $v1){                $arr2[$n][$k1] = $v1;        }            $n++;            }        foreach($b as $k => $v){        foreach($v as $k1 => $v1){                $arr2[$n][$k1] = $v1;            }            $n++;            }

输出：

array(4) { [0] => array(2) { ["id"] => int(66) ["class_name"] => string(14) "www.iiwnet.com" } [1] => array(2) { ["id"] => int(67) ["class_name"] => string(5) "linux" } [2] => array(1) { ["class_count"] => int(8) } [3] => array(1) { ["class_count"] => int(2) }}

2、php对二维数组按其中某个值，进行排序

$sort = array(          'direction' => 'SORT_DESC', //排序顺序标志 SORT_DESC 降序；SORT_ASC 升序          'field'     => 'publish_date',       //排序字段  );  $arrSort = array();foreach($result AS $uniqid => $row){  //$result    foreach($row AS $key=>$value){          $arrSort[$key][$uniqid] = $value;      }  }  if($sort['direction']){    array_multisort($arrSort[$sort['field']], constant($sort['direction']), $result);  }

3、其他

unset($as_activity[0]);//删除数组元素，删除后的数组，不是索引数组$as_activity = array_values($as_activity);//重建索引数组array_merge_recursive($as_activity,$array['data']['as_activity']);//合并两个数组

array_column($array,'key')//（二维数组，二维数组的key）得到二维数组中的某一列值

$res = array(); //想要的结果foreach ($result as $k => $v) {    $res[$v['time']][] = $v;}//二维数组按相同字段合并

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