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7.8

insert data to three tables using one html form

Asked by colin0292 in PHP and Databases, MySQL Server, PHP Scripting Language

hey
im using phpmyadmin (MyISAM storage engine) and i have table called
prof_rating which includes
-comm_id
-prof_id ======> this field should link to another table called prof
-rate
-comment

prof table includes
-prof_id
-prof_name
-dept
-school_id ======> this field should link to another table called school

school table includes
-school_id
-school_name
-state
__________________________________________________
my question here: in my html form where any user could add review,this means i have one form that inserted into three different tables, how should i write the insert statement??
i try to insert data but got some error msg that says" Incorrect integer value: '' for column 'prof_id' at row 1"
also i have to check if the prof_name already exists then add the comment and rate.

i'm not sure if im doing it the right way coz of that msg besides my tables didn't get any data.
plz see the html form and php code

help plz

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             ########HTML FORM#############
<form action="rate.php" method="post">
Professor name:
	<br>
<input type="text" name="prof_name">
	<br>
School/University:
	<br>
<input type="text" name="school_name">
	<br>
Department:
	<br> 
<input type="text" name="dept">
	<br>
rate 1-5:
<select name="rate">
    <option value="1">1</option>
    <option value="2">2</option>
    <option value="3">3</option>
    <option value="4">4</option>
    <option value="5">5</option>
</select>
	<br><br>
Your comments:<BR>
<TEXTAREA NAME="comment" COLS=40 ROWS=6></TEXTAREA>
	<br><br>
	<input type="submit" value="Submit">
	<input type="reset" value="Reset">
</form>
 
______________________PHP __________________________________
<?php
include 'config.php';
include 'opendb.php';
/* Check all form inputs using check_input function */
$prof_name   = check_input($_POST['prof_name'], "hey you..... Enter professor name.");
$school_name = check_input($_POST['school_name'], "Enter your school name.");
$dept		 = check_input($_POST['dept'], "Enter the department.");
$rate		 = check_input($_POST['rate']);
$comment     = check_input($_POST['comment'], "Enter your comment.");
 
 
$RSCount = mysql_query("SELECT COUNT(*) AS TotalRecords FROM prof WHERE prof_name = '{$_POST['prof_name']}'");
$CountRow = mysql_fetch_object($RSCount);
if ($CountRow->TotalRecords > 0)
{
	$RSProf = mysql_query("SELECT prof_id FROM prof WHERE prof_name = '{$_POST['prof_name']}'");
	$ProfRow = mysql_fetch_object($RSProf);
	$ProfIDToUpdate = $ProfRow->prof_id;
 
	$updateQuery = "UPDATE prof_rating SET rating = '{$_POST['rate']}' WHERE prof_id = '{$ProfIDToUpdate}'";
	@mysql_query($updateQuery) or die(mysql_error());
 
	$updateQuery = "UPDATE prof SET dept = '{$_POST['dept']}', school_id = '{$_POST['school_name']}' WHERE prof_id = '{$ProfIDToUpdate}'";
	@mysql_query($updateQuery) or die(mysql_error());
}
else
{
	$data= "INSERT INTO prof VALUES ('', '{$_POST['school_name']}', '{$_POST['dept']}', '{$_POST['prof_name']}')";
	@mysql_query($data) or die(mysql_error());
	$prof_id = mysql_insert_id();
	
	$todata= "INSERT INTO prof_rating VALUES ('', '{$prof_id}', '{$_POST['rate']}', '{$_POST['comment']}')";
	@mysql_query($todata) or die(mysql_error());
}
 
echo "<TD valign='top'><br /><center><b>You successed!";
echo "<br>";
 
 
 
/* Functions we used */
function check_input($data, $problem='')
{
    $data = trim($data);
    $data = stripslashes($data);
    /*$data = htmlspecialchars($data);*/
    if ($problem && strlen($data) == 0)
    {
        show_error($problem);
    }
    return $data;
}
 
function show_error($myError)
{
?>
    <html>
    <body>
 
    <b>Please correct the following error:</b><br />
    <?php echo $myError; ?>
 
    </body>
    </html>
<?php
exit();
}
?>

           
         

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insert data to three tables using one html form

Asked by colin0292 in PHP and Databases, MySQL Server, PHP Scripting Language

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