Post
Ask Question
jitendra gupta

jitendra gupta

  • NA
  • 7
  • 4.3k

RELATED COMBO

Oct 15 2014 8:25 AM
DEAR SIR I AM USING FOLLOWING CODE 
    
 DATABASE /////////////////// company//////
 
Database: `Work`
Table structure for table `category`
CREATE TABLE `category` (
`id` bigint(11) NOT NULL auto_increment,
`category_name` varchar(255) NOT NULL,
PRIMARY KEY (`id`)
) ENGINE=MyISAM DEFAULT CHARSET=latin1 AUTO_INCREMENT=20 ;

Dumping data for table "category":

INSERT INTO `category` (`id`, `category_name`) VALUES
(9, 'Electronics'),
(2, 'Mobiles'),
(3, 'Camera'),
(10, 'Home & Kitchen'),
(11, 'Apparel'),
(12, 'Gifts'),
(13, 'Appliances'),
(19, 'Medicine');

Table structure for table "company":

CREATE TABLE `company`
(
`id` bigint(11) NOT NULL auto_increment,
`cat_id` int(11) NOT NULL,
`company_name` varchar(255) NOT NULL,
PRIMARY KEY (`id`)
) ENGINE=MyISAM DEFAULT CHARSET=latin1 AUTO_INCREMENT=34 ;

Dumping data for table "company":

INSERT INTO `company` (`id`, `cat_id`, `company_name`) VALUES
(1, 2, 'Samsung'),
(2, 2, 'Nokia'),
(3, 2, 'LG'),
(6, 11, 'Rebook'),
(7, 11, 'Denim'),
(8, 11, 'Nike'),
(9, 13, 'Philips'),
(10, 13, 'Prestige'),
(11, 3, 'Nikon'),
(12, 3, 'Cannon'),
(13, 3, 'Sony'),
(14, 9, 'Tohsiba'),
(15, 9, 'Panasonic'),
(16, 12, 'Dinner Set'),
(31, 19, 'Generic'),
(18, 10, 'Samsung'),
(19, 10, 'LG'),
(30, 19, 'Branded'),
(32, 19, 'Ayurvedic '),
(29, 19, 'OTC'),
(33, 19, 'homeopethic');

Code Part

config.php
<?php
$host="localhost";
$username="root";
$password="root";
$dbname="company";
$con=mysql_connect("$host","$username","$password");
mysql_select_db("$dbname",$con);
?> 
 
 
 
 
<?php
include('config.php');
?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1" />
<title>Untitled Document</title>
<script language="javascript" type="text/javascript">
function showCompany(catid) {
document.frm.submit();
}
</script>
</head>
<body>
<form action="" method="post" name="frm" id="frm">
<table width="500" border="0">
<tr>
<td width="119">Category</td>
<td width="371">
<select name="cat_id" id="cat_id" value="cat_id" onChange="showCompany(this.value);">
<option value="">--Select--</option>
<?php
$sql1="select * from category";
$sql_row1=mysql_query($sql1);
while($sql_res1=mysql_fetch_assoc($sql_row1))
{
?>
<option value="<?php echo $sql_res1["id"]; ?>" <?php if($sql_res1["id"]==$_REQUEST["cat_id"]) { echo "Selected";}?>>
<?php echo $sql_res1["category_name"]; ?></option>
<?php
}
?>
</select>
</td>
</tr>
<tr>
<td>Company</td>
<td id="td_company">
<select name="company_id" id="company_id">
<option value="">--Select--</option>
<?php
$sql="select * from company where cat_id='$_REQUEST[cat_id]'";
$sql_row=mysql_query($sql);
while($sql_res=mysql_fetch_assoc($sql_row))
{
?>
<option value="<?php echo $sql_res["id"]; ?>"><?php echo $sql_res["company_name"]; ?></option>
<?php
}
?>
</select>
</td>
</tr>
<tr>
<td>&nbsp;</td>
<td>&nbsp;</td>
</tr>
</table>
</form>
</body>
</html>
 
 
but when i am run this code its gives following error 


( ! ) Notice: Undefined index: cat_id in C:\wamp\www\Related combobox\combo.php on line 32
Call Stack
#TimeMemoryFunctionLocation
10.0008143712{main}( )..\combo.php:0