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

Get ID from Database when Posting with a HTML Form
I have a form I am submitting to a MySql database. Each product has an ID # attached to it that auto

php global variable
how can we create global variable so we can use its value in any form.. Please give example to

Help a newbee save my job !
Hey guys i am dying here i am new to php and would like for someone to help me with this problem

set xml path in flash when xml created in memorystream and webrequest
i am creating an xml file using memory stream and i want to load this xml file into the flash on cli

User registration and login
I don't know whether this is the correct forum, if not i apologise but am pretty desperate at the mo

problem with array - multilingual page
this is my test page :
Code: <?php
if(isset($_GET['lang'])) {
if($_GET['la

FFmpeg Images 2 Video conversion problem ??
I got folder full of images , number of images = 600 , I want to make a video which plays one image

Connection Timeout
I'm using xmii 12.0

I'm calling a transaction as a web service from a windows application

Cloud Computing?
Hello,

I was wondering if anyone could help explain this term to me. I'm starting to hear it

php calculate
this code echoes correctly the sum but the inserted result is 0??
Code: <?php
$TotalNum