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

Gaining access to Drop Down Menu Variable
code is below, I am creating a drop down menu. I want to echo the value selected in the drop down me

Add code to enable passing of checkbox variable on login
Ok, I have a login page, but want to add a checkbox that when checked and successful login is made i

PHP form authentication
Hi guys,

what am trying to achieve is this: Whenever a user tries to login to my website, an

Something Non-Traditional. Can we solve?
I have an idea for an application here. It's mostly flash, but it couldn't work without a somewhat n

how to easy edit text, with box? Help.
Hi.
I have a little problem. I'm doing a webpage for my aunt and I would like to make it as easy

Is it possible to view php source code??
Hi All

I was just wondering if it's possible to view a websites php source code?
I know

Multipe Dynamic Controls & AutoPostback Issue
I currently have a need to create many dynamic controls (Example Textboxes) that need to do a PostBa

upload only text files
hi guys i want to upload only text like like (pdf,note pad and ofiice files) so can any one please t

data type in column definition
Hi,
I create a table with column called "Direction of Travel code ".
The travel codes in t

parsing error
can anyone explain this syntax error:

Parse error: syntax error, unexpected T_IF

The e