The following code has a problem when i execute this file notice

Feb 3rd, 2013 at 07:58 AM
The following code has a problem-
when i execute this file a notice show in catagory box like this (undefined
index cat_id) but when i select one then output is done .
Please find out this problem.




<script language="javascript"
type="text/javascript">
    function showCompany(cat_id) {
        document.frm.submit();
    }
</script>



<?php
include('db.php');
?>


<form action="" method="post"
name="frm" id="frm">
       Category box<select name="cat_id"
id="cat_id" onChange="showCompany(this.value);">
       <option value="">--Select--</option>
       <?php        
	   $rs=$db->query("select * from category");
	   while($row1=$rs->fetch_array()){
       ?>
       <option value="<?php echo $row1[0]; ?>" <?php
if($row1[0]==$_REQUEST['cat_id']){ echo "Selected"; } ?>
><?php echo $row1[1]; ?></option>
        <?php
        }
        ?>
       </select><br/>

       
      Category value_box <select name="company_id"
id="company_id">
       <option value="">--Select--</option>

       <?php       
	   $rs1=$db->query("select * from company where
cat_id='$_REQUEST[cat_id]'");
	   while($row=$rs1->fetch_array()){
       ?>
       <option value="<?php echo $row[0];
?>"><?php echo $row[2]; ?></option>
       <?php
       }
       ?>
    </select>
       
</form>
/12
Comments 10
