php二维数组排序与遍历
关于php二维数组定义我就不说多了,很简单的,下面几款实例都是讲关于php 二维数组排序与遍历,我们每个实例都是以不同的方法介绍,代码如下:
- function multi_array_sort($multi_array,$sort_key,$sort=sort_asc){
- if(is_array($multi_array)){
- foreach ($multi_array as $row_array){
- if(is_array($row_array)){
- $key_array[] = $row_array[$sort_key];
- }else{
- return -1;
- }
- }
- }else{
- return -1;
- }
- array_multisort($key_array,$sort,$multi_array);
- return $multi_array;
- }
-
- array(
- array('id'=>1,'data'=>'a'),
- array('id'=>3,'data'=>'c'),
- array('id'=>2,'data'=>'b')
- );
php本身是有一个多维数组排序的函数的,代码如下:
bool array_multisort ( array $ar1 [, mixed $arg [, mixed $... [, array $... ]]] )
方法二,代码如下:
- <?php
-
- function array_sort($arr,$keys,$type){
- $keysvalue=array();
- $i = 0;
- foreach($arr as $key=>$val) {
- $val[$keys] = str_replace("-","",$val[$keys]);
- $val[$keys] = str_replace(" ","",$val[$keys]);
- $val[$keys] = str_replace(":","",$val[$keys]);
- $keysvalue[] =$val[$keys];
- }
- asort($keysvalue);
- reset($keysvalue);
- foreach($keysvalue as $key=>$vals) {
- $keysort[] = $key;
- }
- $new_array = array();
- if($type != "asc"){
- for($ii=count($keysort)-1; $ii>=0; $ii--) {
- $new_array[] = $arr[$keysort[$ii]];
- }
- }else{
- for($ii=0; $ii<count($keysort); $ii++){
- $new_array[] = $arr[$keysort[$ii]];
- }
- }
- return $new_array;
- }
- ?>
方法三,代码如下:
- <?php
- $a = array(
- 0=>array("id"=>1,"name"=>"小何","addr"=>"0:1"),
- 1=>array("id"=>2,"name"=>"小刚","addr"=>"0:1:2"),
- 2=>array("id"=>3,"name"=>"小军","addr"=>"0:1:3"),
- 3=>array("id"=>4,"name"=>"公司","addr"=>"0:4"),
- );
- function sort_by($array, $keyname = null, $sortby){
- $myarray = $inarray = array();
- foreach($array as $i=>$befree){
- $myarray[$i] = $array[$i][$keyname];
- }
- switch($sortby){
- case 'asc':
- asort($myarray);
- break;
- case 'arsort':
- arsort($myarray);
- break;
- case 'natcasesor':
- natcasesor($myarray);
- break;
- }
- foreach($myarray as $key=>$befree){
- $inarray[$key] = $array[$key];
- }
- return $inarray;
- }
- print_r(sort_by($a,"addr","arsort"));
-
- print_r($a[2]["id"]);
- ?>