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HomeBackend DevelopmentPHP Tutorialphp foreach 循环数组 并设定key

foreach($role as $k=>$v){	$arrayRole[$k=$v->role_id]=$v->role_code;					} 



如题   我写的  key  总是设置不了 


回复讨论(解决方案)

怎么设置不了,print_r($role); 看看

foreach($role as $k=>$v){
    $arrayRole[$v->role_id]=$v->role_code;                    
 

foreach($role as $k=>$v){
    $arrayRole[$v->role_id]=$v->role_code;                    
 
}

foreach($role as $k=>$v){
    $arrayRole[$k][$v->role_id]=$v->role_code;                    
 
}

$k=$v->role_id

这个能当键吗

输出  的是     [user_roles] => Array ( [0] => 1 [1] => 3 )       前边的 键值    还是  0  1  

那当然不对了。第二维必须是一个对象。且有 role_id,role_code  属性才行。

.....不是    我的是  一维数组   前边的是yii 的格式  

仔细说明下吧  我做 的只是向   [user_roles]   放一个数组   数组


foreach($role as $k=>$v){
$arrayRole[$k=$v->role_id]=$v->role_code;



我这样写的数组    放进去 以后发现   数组的 key  没有被设置成功 

print_r($role);
贴出结果

Array ( [user_name] => sss [user_password] => 123  [user_roles] => Array ( [0] => 1 [1] => 3 ) [user_sex] => 男 [user_birthday] => 1992-12-23 [user_relation] => 18716439681 [dep_id] => dep_cn [user_address] => xxxxxx [user_allowed] => [user_createtime] => 0 [user_lasttime] => 0 [user_realname] => demo [user_id] => )


我说的 红色区域 

1、你的这个是数组,不是对象。不能用对象方式访问
2、你的 foreach( $role as $k=>$v){ 中的 是指那套红的部分吗?显然不是
按我的要求,应该是整个数据

foreach($role as $k=>$v){
  if($k == 'user_roles') { .... }


你最好在描述一下,你打算加工成什么样的形式

 foreach($role as $k=>$v){   是 红色部分的  
 

<?php			foreach($role as $k=>$v){			  $arrayRole[$v->role_id]=$v->role_code;													} 			?>		<?php echo $form->labelEx($model,'user_roles'); ?>		<?php echo $form->checkBoxList($model,'user_roles',$arrayRole); ?>		<?php echo $form->error($model,'user_roles'); ?>
 

   这是     红色部分  的  代码      
我只是向  [user_roles] =>  Array ( [0] => 1 [1] => 3 )   有下划线的地方 上边代买生成的  我只是想问  为什么  我的数组  key 值设置不成功     怎么扯到这里来了   

不说其他的,你本身那么写会有问题。
foreach里面定义了$k
然后新数组又有$k=$v->role_id;这个时候foreach的$k都变了。

你想要的数组是什么样的?

 foreach($role as $k=>$v){   是 红色部分的  
 

<?php			foreach($role as $k=>$v){			  $arrayRole[$v->role_id]=$v->role_code;													} 			?>		<?php echo $form->labelEx($model,'user_roles'); ?>		<?php echo $form->checkBoxList($model,'user_roles',$arrayRole); ?>		<?php echo $form->error($model,'user_roles'); ?>
 

   这是     红色部分  的  代码      
我只是向  [user_roles] =>  Array ( [0] => 1 [1] => 3 )   有下划线的地方 上边代买生成的  我只是想问  为什么  我的数组  key 值设置不成功     怎么扯到这里来了   
检查$v是否有role_id属性

           foreach($role as $k=>$v){			 $arrayRole[$v->role_id]=$v->role_code;									} 


我想问的是 我的  这段 代码有没有问题     还有    foreach  循环 赋值并设置键值  还有没有其他方法  以及你有能力有爱心的 话  告诉我下 我的方法哪里出错了 。    看完这些的  小生在此拜谢了。  

我想要的数组    key 放 role的 id  value 放 role的编码


 foreach($role as $k=>$v){   是 红色部分的  
 

<?php			foreach($role as $k=>$v){			  $arrayRole[$v->role_id]=$v->role_code;													} 			?>		<?php echo $form->labelEx($model,'user_roles'); ?>		<?php echo $form->checkBoxList($model,'user_roles',$arrayRole); ?>		<?php echo $form->error($model,'user_roles'); ?>
 

   这是     红色部分  的  代码      
我只是向  [user_roles] =>  Array ( [0] => 1 [1] => 3 )   有下划线的地方 上边代买生成的  我只是想问  为什么  我的数组  key 值设置不成功     怎么扯到这里来了   
检查$v是否有role_id属性

role_id  有值      

单纯从这个foreach来看是没有问题的。

哦  我在研究研究 

foreach 是没问题的,关键是你的数组没有你说的 role_id 和 role_code 元素。

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