Display a foreign key value

Parkie02 · December 3, 2013

Can somebody maybe help me. I have got a complaint and complaint_details table. Complaint_nr is my primary key in complaint and foreign key in complaint_details. How can i show the complaint_nr in my complaint_details table. I have created the tables and in both there are a field for complaint_nr. It is an auto increment in complaint and also the primary key. And in complaint_details it is an int field and the foreign key.

Here is my code. At $query3 I try to insert data into complaint_details.

<?php
session_start();

if(!$_SESSION['email'])
{
	header("location:login.php");
}
?>

<html>
	<head>
		<title> 
			Complaint
		</title>
	</head>
	
<body>
<form method='post' action='complaint.php'>
	<table width='800' border='10' align='left'>
	<tr>
		<td align='center' colspan='5'><h1>Complaint Form</h1></td>
	</tr>

	<tr>
		<td>Comany's Name:</td>
		<td><input type='text' name='comp_name' /></td>
	</tr>
	
	<tr>
		<td>Registration Number:</td>
		<td><input type='text' name='reg_nr' /></td>
	</tr>
	
	<tr>
		<td>Email:</td>
		<td><input type='text' name='comp_email' /></td>
	</tr>
	
	<tr>
		<td>Contact Person:</td>
		<td><input type='text' name='comp_contact_person' /></td>
	</tr>
	
	<tr>
		<td>Contact Number:</td>
		<td><input type='text' name='comp_contactnr' /></td>
	</tr>
	
	<tr>
		<td>Details of complain:</td>
		<td><input type='text' name='complain_details' /></td>
	</tr>
	
	<tr>
		<td>Order Number:</td>
		<td><input type='text' name='order_nr' /></td>
	</tr>
	
	<tr>
		<td>Order Description:</td>
		<td><input type='text' name='order_desc' /></td>
	</tr>
	
	<tr>
		<td>Order Date:</td>
		<td><input type='date' name='order_date' /></td>
	</tr>
	
	<tr>
		<td>Delivery Date:</td>
		<td><input type='date' name='delivery_date' /></td>
	</tr>
	
	<tr>
		<td>Invoice Date:</td>
		<td><input type='date' name='invoice_date' /></td>
	</tr>
	
	<tr>
		<td>Delivery Number:</td>
		<td><input type='text' name='delivery_nr' /></td>
	</tr>
	
	<tr>
		<td>Order Amount:</td>
		<td><input type='number' step='0.01' name='order_amount' /></td>
	</tr>
	
	<tr>
		<td>Amount Already Paid:</td>
		<td><input type='number' step='0.01' name='amount_paid' /></td>
	</tr>
	
	<tr>
		<td>Amount Outstanding:</td>
		<td><input type='number' step='0.01' name='amount_outstanding' /></td>
	</tr>
	
	<tr>
		<td colspan='5' align='center'><input type='submit' name='add_debtor' value='Submit' /></td>
	</tr>
	
	
	</table>
</form>
</body>
</html>
<?php
mysql_connect("localhost","root","mj2015");
mysql_select_db("whodidntpay");

$log = $_SESSION['email'];

	if(isset($_POST['add_debtor']))
	{
		$comp_name = $_POST['comp_name'];
		$comp_regnr = $_POST['reg_nr'];
		$comp_email = $_POST['comp_email'];
		$comp_contact_person = $_POST['comp_contact_person'];
		$comp_contact_nr = $_POST['comp_contactnr'];
		$complain_det = $_POST['complain_details'];
		$ordernr = $_POST['order_nr'];
		$orderdesc = $_POST['order_desc'];
		$orderdate = $_POST['order_date'];
		$deliverydate = $_POST['delivery_date'];
		$invoicedate = $_POST['invoice_date'];
		$deliverynr = $_POST['delivery_nr'];
		$orderamount = $_POST['order_amount'];
		$paidamount = $_POST['amount_paid'];
		$outstandamount = $_POST['amount_outstanding'];
		
		if($comp_name=='')
		{
			echo "<script>alert('Please Enter Company Name')</script>";
			exit();
		}
		
		if($comp_regnr=='')
		{
			echo "<script>alert('Please Enter Company Registration Number')</script>";
			exit();
		}
		
		if($comp_email=='')
		{
			echo "<script>alert('Please Enter Company Email')</script>";
			exit();
		}
		
		if($comp_contact_person=='')
		{
			echo "<script>alert('Please Enter Contact Person')</script>";
			exit();
		}
		
		if($comp_contact_nr=='')
		{
			echo "<script>alert('Please Enter Contact Number')</script>";
			exit();
		}
		
		if($complain_det=='')
		{
			echo "<script>alert('Please Enter Complain Details')</script>";
			exit();
		}
		
		if($ordernr=='')
		{
			echo "<script>alert('Please Enter Order Number')</script>";
			exit();
		}
		
		if($orderdesc=='')
		{
			echo "<script>alert('Please Enter Order Description')</script>";
			exit();
		}
		
		if($orderdate=='')
		{
			echo "<script>alert('Please Enter Order Date')</script>";
			exit();
		}
		
		if($deliverydate=='')
		{
			echo "<script>alert('Please Enter Delivery Date')</script>";
			exit();
		}
		
		if($invoicedate=='')
		{
			echo "<script>alert('Please Enter Invoice Date')</script>";
			exit();
		}
		
		if($deliverynr=='')
		{
			echo "<script>alert('Please Enter Delivery Number')</script>";
			exit();
		}
		
		if($orderamount=='')
		{
			echo "<script>alert('Please Enter Order Amount')</script>";
			exit();
		}
		
		if($paidamount=='')
		{
			echo "<script>alert('Please Enter Amount Paid')</script>";
			exit();
		}
		
		if($outstandamount=='')
		{
			echo "<script>alert('Please Enter The Amount Outstanding')</script>";
			exit();
		}
		
		$num_debt = "select * from debtor where d_name= '$comp_name' AND registration_nr= '$comp_regnr'";
		$run = mysql_query($num_debt);
		$num_comp = mysql_num_rows($run);
		
		if ($num_comp ==0)
		$query = "insert into debtor(d_name,registration_nr,email,contact_person,contact_number,companies_not_paid,amount_not_paid) 
		values ('$comp_name','$comp_regnr','$comp_email','$comp_contact_person','$comp_contact_nr','1','$outstandamount')";
		if ($num_comp ==1)
		$query = "update debtor set companies_not_paid = companies_not_paid + 1, amount_not_paid = amount_not_paid + '$outstandamount' where d_name='$comp_name'";
		
		if (mysql_query($query))
		{
			echo "<script>alert('Company Added Successful')</script>";
		}
		
		$complain_id = "select complainant_id from complainant where email = '$log'";
		$run2=mysql_query($complain_id);
		
		$row = mysql_fetch_assoc($run2); 	
		$query2 = "insert into complaint(complain,d_name,complainant_id) values ('$complain_det','$comp_name','{$row['complainant_id']}')";
		
		if (mysql_query($query2))
		{
			echo "<script>alert('Complaint Added Successful')</script>";
		}
	
		$query3 = "insert into complaint_details(order_nr,order_description,order_date,delivery_date,invoice_date,delivery_nr,order_amount,amount_paid,amount_outstanding)
		values ('$ordernr','$orderdesc','$orderdate','$deliverydate','$invoicedate','$deliverynr','$orderamount','$paidamount','$outstandamount')";
		
	}	

?>

Any help will be appreciated

Parkie02 · December 3, 2013

The table complaint_details consists of everything stated in query 3 and also details_id that is the primary key and also auto increment and then also complaint_nr that is the foreign key that I dont know how to add

BrodaNoel · December 3, 2013

http://php.net/manual/en/function.mysql-insert-id.php

int mysql_insert_id ([ resource $link_identifier = NULL ] )

Retrieves the ID generated for an AUTO_INCREMENT column by the previous query (usually INSERT).

Example:

<?php
$link = mysql_connect('localhost', 'mysql_user', 'mysql_password');
if (!$link) {
die('Could not connect: ' . mysql_error());
}
mysql_select_db('mydb');

mysql_query("INSERT INTO mytable (product) values ('kossu')");
printf("Last inserted record has id %d\n", mysql_insert_id());
?>

Warning This extension is deprecated as of PHP 5.5.0, and will be removed in the future. Instead, the MySQLi or PDO_MySQL extension should be used. See also MySQL: choosing an API guide and related FAQ for more information.

And... Please, read about: SQL Inyection.

Parkie02 · December 3, 2013

Can you maybe help me apply it directly on my problem. So with this query3 insert I want to insert all of the values below plus the details_id that is automatically added because of the auto increment and then also complaint_id that I want to add that is the foreign key for this table and primary key for the complaint table.

$query3 = "insert into complaint_details(order_nr,order_description,order_date,delivery_date,invoice_date,delivery_nr,order_amount,amount_paid,amount_outstanding)
values ('$ordernr','$orderdesc','$orderdate','$deliverydate','$invoicedate','$deliverynr','$orderamount','$paidamount','$outstandamount')";

Edited December 3, 2013 by Parkie02

Barand · December 3, 2013



$query2 = "insert into complaint(complain,d_name,complainant_id) values ('$complain_det','$comp_name','{$row['complainant_id']}')";


mysql_query($query2);


$the_auto_id_that_was_just_created = mysql_insert_id();


// now use that value as the foreign key when you add the detail record

Parkie02 · December 4, 2013

Thank you. Can somebody tell me why there is now added two complaint records to the complaint table and how I can fix it. Here is the new code

<?php
session_start();

if(!$_SESSION['email'])
{
	header("location:login.php");
}
?>

<html>
	<head>
		<title> 
			Complaint
		</title>
	</head>
	
<body>
<form method='post' action='complaint.php'>
	<table width='800' border='10' align='left'>
	<tr>
		<td align='center' colspan='5'><h1>Complaint Form</h1></td>
	</tr>

	<tr>
		<td>Comany's Name:</td>
		<td><input type='text' name='comp_name' /></td>
	</tr>
	
	<tr>
		<td>Registration Number:</td>
		<td><input type='text' name='reg_nr' /></td>
	</tr>
	
	<tr>
		<td>Email:</td>
		<td><input type='text' name='comp_email' /></td>
	</tr>
	
	<tr>
		<td>Contact Person:</td>
		<td><input type='text' name='comp_contact_person' /></td>
	</tr>
	
	<tr>
		<td>Contact Number:</td>
		<td><input type='text' name='comp_contactnr' /></td>
	</tr>
	
	<tr>
		<td>Details of complain:</td>
		<td><input type='text' name='complain_details' /></td>
	</tr>
	
	<tr>
		<td>Order Number:</td>
		<td><input type='text' name='order_nr' /></td>
	</tr>
	
	<tr>
		<td>Order Description:</td>
		<td><input type='text' name='order_desc' /></td>
	</tr>
	
	<tr>
		<td>Order Date:</td>
		<td><input type='date' name='order_date' /></td>
	</tr>
	
	<tr>
		<td>Delivery Date:</td>
		<td><input type='date' name='delivery_date' /></td>
	</tr>
	
	<tr>
		<td>Invoice Date:</td>
		<td><input type='date' name='invoice_date' /></td>
	</tr>
	
	<tr>
		<td>Delivery Number:</td>
		<td><input type='text' name='delivery_nr' /></td>
	</tr>
	
	<tr>
		<td>Order Amount:</td>
		<td><input type='number' step='0.01' name='order_amount' /></td>
	</tr>
	
	<tr>
		<td>Amount Already Paid:</td>
		<td><input type='number' step='0.01' name='amount_paid' /></td>
	</tr>
	
	<tr>
		<td>Amount Outstanding:</td>
		<td><input type='number' step='0.01' name='amount_outstanding' /></td>
	</tr>
	
	<tr>
		<td colspan='5' align='center'><input type='submit' name='add_debtor' value='Submit' /></td>
	</tr>
	
	
	</table>
</form>
</body>
</html>
<?php
mysql_connect("localhost","root","mj2015");
mysql_select_db("whodidntpay");

$log = $_SESSION['email'];

	if(isset($_POST['add_debtor']))
	{
		$comp_name = $_POST['comp_name'];
		$comp_regnr = $_POST['reg_nr'];
		$comp_email = $_POST['comp_email'];
		$comp_contact_person = $_POST['comp_contact_person'];
		$comp_contact_nr = $_POST['comp_contactnr'];
		$complain_det = $_POST['complain_details'];
		$ordernr = $_POST['order_nr'];
		$orderdesc = $_POST['order_desc'];
		$orderdate = $_POST['order_date'];
		$deliverydate = $_POST['delivery_date'];
		$invoicedate = $_POST['invoice_date'];
		$deliverynr = $_POST['delivery_nr'];
		$orderamount = $_POST['order_amount'];
		$paidamount = $_POST['amount_paid'];
		$outstandamount = $_POST['amount_outstanding'];
		
		if($comp_name=='')
		{
			echo "<script>alert('Please Enter Company Name')</script>";
			exit();
		}
		
		if($comp_regnr=='')
		{
			echo "<script>alert('Please Enter Company Registration Number')</script>";
			exit();
		}
		
		if($comp_email=='')
		{
			echo "<script>alert('Please Enter Company Email')</script>";
			exit();
		}
		
		if($comp_contact_person=='')
		{
			echo "<script>alert('Please Enter Contact Person')</script>";
			exit();
		}
		
		if($comp_contact_nr=='')
		{
			echo "<script>alert('Please Enter Contact Number')</script>";
			exit();
		}
		
		if($complain_det=='')
		{
			echo "<script>alert('Please Enter Complain Details')</script>";
			exit();
		}
		
		if($ordernr=='')
		{
			echo "<script>alert('Please Enter Order Number')</script>";
			exit();
		}
		
		if($orderdesc=='')
		{
			echo "<script>alert('Please Enter Order Description')</script>";
			exit();
		}
		
		if($orderdate=='')
		{
			echo "<script>alert('Please Enter Order Date')</script>";
			exit();
		}
		
		if($deliverydate=='')
		{
			echo "<script>alert('Please Enter Delivery Date')</script>";
			exit();
		}
		
		if($invoicedate=='')
		{
			echo "<script>alert('Please Enter Invoice Date')</script>";
			exit();
		}
		
		if($deliverynr=='')
		{
			echo "<script>alert('Please Enter Delivery Number')</script>";
			exit();
		}
		
		if($orderamount=='')
		{
			echo "<script>alert('Please Enter Order Amount')</script>";
			exit();
		}
		
		if($paidamount=='')
		{
			echo "<script>alert('Please Enter Amount Paid')</script>";
			exit();
		}
		
		if($outstandamount=='')
		{
			echo "<script>alert('Please Enter The Amount Outstanding')</script>";
			exit();
		}
		
		$num_debt = "select * from debtor where d_name= '$comp_name' AND registration_nr= '$comp_regnr'";
		$run = mysql_query($num_debt);
		$num_comp = mysql_num_rows($run);
		
		if ($num_comp ==0)
		$query = "insert into debtor(d_name,registration_nr,email,contact_person,contact_number,companies_not_paid,amount_not_paid) 
		values ('$comp_name','$comp_regnr','$comp_email','$comp_contact_person','$comp_contact_nr','1','$outstandamount')";
		if ($num_comp ==1)
		$query = "update debtor set companies_not_paid = companies_not_paid + 1, amount_not_paid = amount_not_paid + '$outstandamount' where d_name='$comp_name'";
		
		if (mysql_query($query))
		{
			echo "<script>alert('Company Added Successful')</script>";
		}
		
		$complain_id = "select complainant_id from complainant where email = '$log'";
		$run2=mysql_query($complain_id);
		
		$row = mysql_fetch_assoc($run2); 	
		$query2 = "insert into complaint(complain,d_name,complainant_id) values ('$complain_det','$comp_name','{$row['complainant_id']}')";

		mysql_query($query2);

		$the_auto_id_that_was_just_created = mysql_insert_id();

		if (mysql_query($query2))
		{
			echo "<script>alert('Complaint Added Successful')</script>";
		}
	
		$query3 = "insert into complaint_details(order_nr,order_description,order_date,delivery_date,invoice_date,delivery_nr,complaint_nr,order_amount,amount_paid,amount_outstanding)
		values ('$ordernr','$orderdesc','$orderdate','$deliverydate','$invoicedate','$deliverynr','$the_auto_id_that_was_just_created','$orderamount','$paidamount','$outstandamount')";
		
		if (mysql_query($query3))
		{
			echo "<script>alert('Complaint Details Added Successful')</script>";
		}
	}	

?>

Ch0cu3r · December 4, 2013

Because you are running the insert query twice for the complaint table ($query2). This is will cause two entries.

mysql_query($query2);

$the_auto_id_that_was_just_created = mysql_insert_id();

if (mysql_query($query2))
{
	echo "<script>alert('Complaint Added Successful')</script>";
}

Edited December 4, 2013 by Ch0cu3r

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