Go Premium for a chance to win a PS4. Enter to Win

x
?
Solved

Determine if a record exists, if so exit PHP/MySQL

Posted on 2009-03-31
5
Medium Priority
?
295 Views
Last Modified: 2012-05-06
I have a table called customers and I need a simple query to check to see if an incoming querystring value is already in that table.  (Field is called "name").

name looks like:  $custName

If the value is found, exit so no more script executes on the page.
0
Comment
Question by:JuniorBee
  • 2
  • 2
5 Comments
 
LVL 34

Accepted Solution

by:
Beverley Portlock earned 2000 total points
ID: 24033377
Something like this?

$rs = mysql_query("select * from myTableName where name='$custName' ");
if ( $rs )
    if ( mysql_num_rows($rs) > 0 )
        exit;
0
 
LVL 16

Expert Comment

by:anoyes
ID: 24033391
You can call mysql_num_rows on your sql result, and then do exit() if it's greater than 0

<?php
$name = mysql_real_safe_string($_GET['name']);
$rs = mysql_query("SELECT * FROM tablename WHERE name='$name'");
$numRows = mysql_num_rows($rs);
if ($numRows > 0){
  exit();
}
?>

Open in new window

0
 
LVL 34

Expert Comment

by:Beverley Portlock
ID: 24033394
Just noticed that you did mention the table name, so amending the above..


$rs = mysql_query("select * from customers where name='$custName' ");
if ( $rs )
    if ( mysql_num_rows($rs) > 0 )
        exit;
0
 

Author Comment

by:JuniorBee
ID: 24033398
Trying it out right now, thanks
0
 

Author Comment

by:JuniorBee
ID: 24033895
Worked Yay!!!
0

Featured Post

Industry Leaders: We Want Your Opinion!

We value your feedback.

Take our survey and automatically be enter to win anyone of the following:
Yeti Cooler, Amazon eGift Card, and Movie eGift Card!

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

This article discusses four methods for overlaying images in a container on a web page
Since pre-biblical times, humans have sought ways to keep secrets, and share the secrets selectively.  This article explores the ways PHP can be used to hide and encrypt information.
The viewer will learn how to dynamically set the form action using jQuery.
The viewer will learn how to create a basic form using some HTML5 and PHP for later processing. Set up your basic HTML file. Open your form tag and set the method and action attributes.: (CODE) Set up your first few inputs one for the name and …
Suggested Courses

926 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question