PHP 多维数组的排序问题 根据二维数组中某个项排序

PHP内置函数 array_multisort 要求每个数组大小一样
$areas是地区的二维数组，包含人数和次数，现在要按这2种数进行降序排序
<div class="codetitle"><a style="CURSOR: pointer" data="62246" class="copybut" id="copybut62246" onclick="doCopy('code62246')"> 代码如下:<div class="codebody" id="code62246">
foreach($areaArray as &$areas) {
$times = $numbers = array();
foreach($areas as $province => $v) {
$times[$province] = $v['times'];
$numbers[$province] = $v['numbers'];
}
array_multisort($times,SORT_DESC,$numbers,$areas);
}

比如有个多为数组：
<div class="codetitle"><a style="CURSOR: pointer" data="53960" class="copybut" id="copybut53960" onclick="doCopy('code53960')"> 代码如下:<div class="codebody" id="code53960">
$arr = array(
‘d' => array(‘id' => 5,‘name' => 1,‘age' => 7),
‘b' => array(‘id' => 2,'name' => 3,'age' => 4),
‘a' => array(‘id' => 8,'name' => 10,'age' => 5),
‘c' => array(‘id' => 1,'name' => 2,'age' => 2)
);

需要对二维数组中的 age 项排序。
需要用到PHP的内置函数 array_multisort（），可以看手册。
自定义函数：
<div class="codetitle"><a style="CURSOR: pointer" data="31934" class="copybut" id="copybut31934" onclick="doCopy('code31934')"> 代码如下:<div class="codebody" id="code31934">
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 false;
}
}
}else{
return false;
}
array_multisort($key_array,$sort,$multi_array);
return $multi_array;
}
//处理
echo “

”; 
print_r(multi_array_sort($arr,'age'));exit; 
//输出 
Array 
( 
[c] => Array 
( 
[id] => 1 
[name] => 2 
[age] => 2 
) 
[b] => Array 
( 
[id] => 2 
[name] => 3 
[age] => 4 
) 
[a] => Array 
( 
[id] => 8 
[name] => 10 
[age] => 5 
) 
[d] => Array 
( 
[id] => 5 
[name] => 1 
[age] => 7 
) 
) 
written by 大宇 
0 
                        
（编辑：李大同）
【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!