如何使用form_dropdown在笨

Question

我有一些麻煩hidding使用form_dropdown
如何隱藏每個j_status行==接近，則該選項標籤可以被隱藏的選項標籤隱藏選項值
這裏是我的腳本

<?php 
$dev=''; 
foreach($j as $r) 
{ 
    if(($r->j_status)=='open') 
     $dev='echo ""'; 
    else if(($r->j_status)=='close') 
     $dev='echo hidden'; 
} 
    echo form_dropdown("id_j",$list_jid,"default",$dev,"id='some_id'"); 
?> 

Answer 1

<?php 
$dev=''; 
foreach($j as $r) 
{ 
    if(($r->j_status)=='open') 
     $dev='echo ""'; 
    else if(($r->j_status)=='close') 
     $dev='echo hidden'; 
echo form_dropdown("id_j",$list_jid,"default",$dev,"id='some_id'");//place here 
} 

?> 

1. Form Helper
2. form Validation