Invalid argument supplied for foreach() in 问题的解决方法

问题提示：

Warning: Invalid argument supplied for foreach() in D:\Tool\xampp\htdocs\testmember\ext_extensions.php on line 449

解决办法：

一.

刷新页面,

php 中 echo "<script>location.href='$basename';</script>";

二.

添加个is_array判断

问题Warning: Invalid argument supplied for foreach() in 完善解决方案
将报错的语句做如下修改（例）：

把

QUOTE:
foreach($extcredits as $id => $credit)
{
         if($credit['ratio'])
         {
                 $exchcredits[$id] = $credit;
         }
}

改为

QUOTE:
if(is_array($extcredits))    //add
{                          
         foreach($extcredits as $id => $credit)
         {
                  if($credit['ratio'])
                  {
                              $exchcredits[$id] = $credit;
                  }        
        }
}   //add

或

QUOTE:
foreach((array)$extcredits as $id => $credit)
{
         if($credit['ratio'])
         {
                 $exchcredits[$id] = $credit;
         }
}