Solved

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

Posted on 2009-03-31
5
289 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
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 2
  • 2
5 Comments
 
LVL 34

Accepted Solution

by:
Beverley Portlock earned 500 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

Free Tool: Port Scanner

Check which ports are open to the outside world. Helps make sure that your firewall rules are working as intended.

One of a set of tools we are providing to everyone as a way of saying thank you for being a part of the community.

Question has a verified solution.

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

Things That Drive Us Nuts Have you noticed the use of the reCaptcha feature at EE and other web sites?  It wants you to read and retype something that looks like this. Insanity!  It's not EE's fault - that's just the way reCaptcha works.  But it i…
Part of the Global Positioning System A geocode (https://developers.google.com/maps/documentation/geocoding/) is the major subset of a GPS coordinate (http://en.wikipedia.org/wiki/Global_Positioning_System), the other parts being the altitude and t…
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 …

624 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