Question

after deleting a field in one of my tables, I get an error message

Asked by: digigirl1124

I was almost finished with a project and after testing realized I didnot need one of the fields in one of the tables.  So I truncated all of the tables (fresh start) except the one with users email and passwords.  Then, I deleted the field I no longer needed from one of the tables.  Then I got interrupted and forgot to delete the field name in my INSERT INTO statement for that form.  So, I received an error message.  Then, I deleted the field name from my INSERT INTO statement, but I continue to get the error message (see below). I have checked the syntax to see if I deleted anything other than the field name, but it looks fine.  Two eyes are always better than one!!!

Is there something I messed up by not deleting the field name first??
Should I do something else to correct it?
Thanks so much!
-digi

ERROR MESSAGE:
 
Warning: mysql_fetch_array(): supplied argument is not a valid MySQL result resource in D:\Hosting\######\html\processRegister2.php on line 141
 
MY CODE SHOWING line 141
 
$result = mysql_query("INSERT INTO dealers (dealer_name, dealer_address, dealer_address2, dealer_city, dealer_state, dealer_country, dealer_zipcode,  dealer_Acode, dealer_phone, dealer_AcodeCell, dealer_cell, dealer_AcodeFax, dealer_fax, dealer_contact, dealer_salesContact, dealer_serviceContact, dealer_partsContact, trackerID) VALUES ('".$_POST['dealer_name']."', '".$_POST['dealer_address']."', '".$_POST['dealer_address2']."', '".$_POST['dealer_city']."', '".$_POST['dealer_state']."', '".$_POST['dealer_country']."','".$_POST['dealer_zipcode']."', '".$_POST['dealer_Acode']."', '".$_POST['dealer_phone']."', '".$_POST['dealer_AcodeCell']."', '".$_POST['dealer_cell']."', '".$_POST['dealer_AcodeFax']."', '".$_POST['dealer_fax']."', '".$_POST['dealer_contact']."', '".$_POST['dealer_salesContact']."', '".$_POST['dealer_serviceContact']."', '".$_POST['dealer_partsContact']."', '".$_SESSION['trackerID']."')");
//LINE 141 IS BELOW:
$new = mysql_fetch_array($result);      
if(!$new) 
		{
            echo "There has been an error creating your account. 
            Please contact the webmaster." . mysql_error();
		}

                                  
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Asked On
2009-07-08 at 22:36:21ID24555620
Tags

MySQL / PHP and Windows Server

Topics

MySQL Server

,

PHP and Databases

Participating Experts
2
Points
500
Comments
5

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Answers

 

by: ingwaPosted on 2009-07-08 at 23:36:11ID: 24811120

Before line 9 add this:

echo $result;
quit;

Please post what you find printed. It is interesting to see whether you are actually getting data from the form, and how that data is presented to the database.

 

by: digigirl1124Posted on 2009-07-09 at 00:13:01ID: 24811256

Thanks so much, but I was so frustrated I just went to my backup files from the day before and used that version of this processing page.  There were only a couple of changes, besides the field that I deleted, and after I made those and saved it, it works!!

Don't know what is happening?  I checked the Select statement and it looked exactly like the old one, except for the deleted fields.  Maybe it just took time for the server to actually update.  I am using a remote server on GoDaddy. (not by choice!!)
Thanks so much for responding so quickly!!
-digi

 

by: digigirl1124Posted on 2009-07-09 at 00:15:05ID: 31601438

While trying the example, I was able to work out the problem. However, I appreciate the quick response and eagerness to help!  Thanks so much!

 

by: Chris_GralikePosted on 2009-07-09 at 00:35:22ID: 24811343

Tip : You should also validate all the $_POST values and make them save for querying.

The way you have set up the current script will allow people to inject their own sql. Try something like this.

 

<?php
$req_error = false;
// Required fields
if(isset($_POST['dealer_name']) && !empty($_POST['dealer_name'])){
	$d_name = mysql_real_escape_string($_POST['dealer_name']);
}else{
	$d_name = false;
	$req_error = true;
}
if(isset($_POST['dealer_address']) && !empty($_POST['dealer_address'])){
	$d_addr = mysql_real_escape_string($_POST['dealer_address']);
}else{
	$d_addr = false;
	$req_error = true;
}
// Not required fields
if(isset($_POST['dealer_address2']) && !empty($_POST['dealer_address2'])){
	$d_addr2 = mysql_real_escape_string($_POST['dealer_address2']);
}else{
	$d_addr2 = "";
}
// Repeat the above for all the other fields. 
if(isset($_POST['dealer_city']) && !empty($_POST['dealer_city'])){
	$d_city = mysql_real_escape_string($_POST['dealer_city']);
}
if(isset($_POST['dealer_state']) && !empty($_POST['dealer_state'])){
	$d_state = mysql_real_escape_string($_POST['dealer_state']);
}
if(isset($_POST['dealer_country']) && !empty($_POST['dealer_country'])){
	$d_country = mysql_real_escape_string($_POST['dealer_country']);
}
if(isset($_POST['dealer_zipcode']) && !empty($_POST['dealer_zipcode'])){
	$d_zip = mysql_real_escape_string($_POST['dealer_zipcode']);
}
if(isset($_POST['dealer_Acode']) && !empty($_POST['dealer_Acode'])){
	$d_acode = mysql_real_escape_string($_POST['dealer_Acode']);
}
if(isset($_POST['dealer_phone']) && !empty($_POST['dealer_phone'])){
	$d_phone = mysql_real_escape_string($_POST['dealer_phone']);
}
if(isset($_POST['dealer_AcodeCell']) && !empty($_POST['dealer_AcodeCell'])){
	$d_acell = mysql_real_escape_string($_POST['dealer_AcodeCell']);
}
if(isset($_POST['dealer_cell']) && !empty($_POST['dealer_cell'])){
	$d_cell = mysql_real_escape_string($_POST['dealer_cell']);
}
if(isset($_POST['dealer_AcodeFax']) && !empty($_POST['dealer_AcodeFax'])){
	$d_afax = mysql_real_escape_string($_POST['dealer_AcodeFax']);
}
if(isset($_POST['dealer_fax']) && !empty($_POST['dealer_fax'])){
	$d_fax = mysql_real_escape_string($_POST['dealer_fax']);
}
if(isset($_POST['dealer_contact']) && !empty($_POST['dealer_contact'])){
	$d_contact = mysql_real_escape_string($_POST['dealer_contact']);
}
if(isset($_POST['dealer_salesContact']) && !empty($_POST['dealer_salesContact'])){
	$d_salescontact = mysql_real_escape_string($_POST['dealer_salesContact']);
}
if(isset($_POST['dealer_serviceContact']) && !empty($_POST['dealer_serviceContact'])){
	$d_servicecontact = mysql_real_escape_string($_POST['dealer_serviceContact']);
}
if(isset($_POST['dealer_partsContact']) && !empty($_POST['dealer_partsContact'])){
	$d_partscontact = mysql_real_escape_string($_POST['dealer_partsContact']);
}
if(isset($_POST['trackerID']) && !empty($_POST['trackerID'])){
	$d_trackerID = mysql_real_escape_string($_POST['trackerID']);
}
if(!$req_error){
	$result = mysql_query("INSERT INTO dealers (dealer_name, 
						dealer_address, dealer_address2, 
						dealer_city, dealer_state, dealer_country, 
						dealer_zipcode,  dealer_Acode, dealer_phone, 
						dealer_AcodeCell, dealer_cell, dealer_AcodeFax, 
						dealer_fax, dealer_contact, dealer_salesContact, 
						dealer_serviceContact, dealer_partsContact, trackerID) 
					   VALUES ("$d_name", 
						"$d_addr", "$d_addr2", 
						"$d_city", "$d_state", "$d_country",
						".$d_zip","$d_acode", "$d_phone", 
						".$d_acell","$d_cell", "$d_afax",
						"$d_fax", "$d_contact", "$d_salescontact", 
						"$d_servicecontact", "$d_partscontact","$d_trackerID"));
}else{
	echo "Not all required fields where given!";
}
?>

                                              
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by: ingwaPosted on 2009-07-09 at 10:39:03ID: 24816061

Chris has made a very important point here. SQL injection is a very serious risk and without the proper safeguards your site could be crippled the day it goes live through malicious code being posted in a form just to see what happens.

Dreamweaver has a very nifty function that gets inserted into any php page where the server behaviors have been used. It looks similar to my code insert below. What the function does is wrap around all input with a parameter. That will then correctly format and escape the input so that it is safe for the database.

Hope this helps.

<?php
if (!function_exists("GetSQLValueString")) {
function GetSQLValueString($theValue, $theType, $theDefinedValue = "", $theNotDefinedValue = "") 
{
  $theValue = get_magic_quotes_gpc() ? stripslashes($theValue) : $theValue;
 
  $theValue = function_exists("mysql_real_escape_string") ? mysql_real_escape_string($theValue) : mysql_escape_string($theValue);
 
  switch ($theType) {
    case "text":
      $theValue = ($theValue != "") ? "'" . $theValue . "'" : "NULL";
      break;    
    case "long":
    case "int":
      $theValue = ($theValue != "") ? intval($theValue) : "NULL";
      break;
    case "double":
      $theValue = ($theValue != "") ? "'" . doubleval($theValue) . "'" : "NULL";
      break;
    case "date":
      $theValue = ($theValue != "") ? "'" . $theValue . "'" : "NULL";
      break;
    case "defined":
      $theValue = ($theValue != "") ? $theDefinedValue : $theNotDefinedValue;
      break;
  }
  return $theValue;
}
}
 
 
?>
 
<?php 
if ((isset($_POST["MM_insert"])) && ($_POST["MM_insert"] == "form1") && ($_POST['emailsubs']<>"")) {
  $insertSQL = sprintf("INSERT INTO mytable (Email) VALUES (%s)",
                       GetSQLValueString($_POST['email'], "text"));
 
  mysql_select_db($database_dr, $dr);
  $Result1 = mysql_query($insertSQL, $dr) or die(mysql_error());
 
echo "Thank you for subscribing to our mailing list";
}
?>
                                              
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