check if value exists

Posted on 16th Feb 2014 07:03 pm by admin

I have googled this for a while and I am getting lots of different results. Is there a standard method used for checking to see if a value exists in a database before inserting a value? I have a form, you type your name and push submit, it inserts the name into the database and then the name shows up in a list. Right now, it accepts the same values. I want to add a check to say

if name exists, do something

Your Answer:

Login to answer

Other forums

cURL Upload Help
OK, I am creating a bridge from a local program to my website and I am trying to find the best way t

Filename and Line Number Custom Error
I have a class, with a method that accepts 2 parameters. I would like to output error messages.

Redistributing dependent dlls
Hai all ,

I have created an application in VC++ using VS2008 in a development machine which r

selection tool on raster image
Hi!
I have to implement in my app a selection tool which lets users to select region of any shape

phpMailer not working ..........
HI,
I was playing with the phpMailer script and tried to send a smiple mail using their test scri

Streaming local file from PHP while it’s been written to by a CURL process
I am creating a simple Proxy server for my website. Why I am not using mod_proxy and mod_cache is a

Date/Time and Checkbox
Hi Everyone,

I am trying to figure out how to insert the current date and tim

Code Help.. If txt input box empty search X instead..
I am having a problem with my search script. At current it will simply search by a selected date whi

IP Logger for Voting Script
Can anybody help me place an IP logger into my voting script?
I know that maybe it is not as secu

insert mysql embeded videos as blobs?
Using TinyMCE my client will be able to embed images and flash videos into large columns of text whi