php - 此代码的另一种方法是什么？

Question

我有以下代码。我有一个月的数组。

         $m="";
         $months = array(1=>'January',2=>'February',3=>'March',4=>'April',5=>'May',6=>'June',7=>'July',8=>'August',9=>'September',10=>'October',11=>'November',12=>'December');

         foreach($objhst_fees->fetch_hst_fees("`month`,`fees`","where `grno`='".$stu_name['grno']."'")as $count_month)
          { 
                           //value like:$count_month['month']=1,2,3
            $m  .= $count_month['month'].",";
          }

所以假设 $m=1,2,3,4,5,
然后，我将其分解并创建数组。

          $paid_month = explode(",",$m);
          $arr=array();
          foreach($paid_month as $key=>$p)
          {
            array_push($arr,$p);
          } 

然后，我打印不在 $arr 中的月份名称。

          foreach($months as $key=>$a)
          {
             if(!in_array($key,$arr))
             {
                echo $a.",";
                //echo $months[$key];
             }
           }

但我认为，这种方法很适合它。那么这样做的替代方案是什么？

Answer 1

在代码中:

foreach($objhst_fees->fetch_hst_fees("`month`,`fees`","where `grno`='".$stu_name['grno']."'")as $count_month) { 
   //value like:$count_month['month']=1,2,3
   $m  .= $count_month['month'].",";
}

你可以改变:

$m  .= $count_month['month'].",";

到

$m[] = $count_month['month'];

这将避免再次对它进行 explode()