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

I need desperate help with this php code integrated with flash please
Can someone please help me with this php code which I have been stuck on for weeks . I am trying to

why isn't this PHP code working ???
it's suppose to find a name on the database.

<?php

$s = $_POST["lname&

order by date not ID number help php
I am trying to orginize the following code to order by date not id number.
any help would be grea

Problem with Sending Mail by PHP
hello all,
I m new to php, can u plz provide me the code to send mail by php having CAPTC

Can't find the problem (no error message)!
OK, here's the deal. This code is really weirdly formatted (sorry!) and hard to understand, so I'm g

calendar dates and hours compare problem
i have a calendar in wordpress, everything works great except that i can make 2 meetings at the same

Thought I has this figured out especially after all the help i received?
Cags, Salathe, Daniel helped me with this yesterday, but not sure i took it all in.
I am attempti

Get content from table into a list, without repeating.
Alright this is kinda an odd thing, so I need some help.

I have a table "quote" wit

mysql VARCHAR acting like INT
Hi, All.

I have a table that contains a varchar(10) column named weird_field. In this column

Displaying different page content, depending on the logged in user.
Hi all, I am new to ASP.net (and web development in general), and have a question about how I can di