check value already exists in codeigniter

Callback function of codeigniter which checks whether the value already exists in particular column of table or not.
This function work on add and edit both cases,it return false if value exists and return true if value not exists.
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CREATE OWN CAPTCHA FOR YOUR WEBSITE

Hi Geeks,
I am sharing you a program for creating a captcha script using php and javascript. Following are the simple steps to create captcha in php
Step 1: Create a php script named ‘captcha.php’ with following code
Pagination code using php and mysql

Hi Geeks,
We have gone through some user requests for pagination code for php mysql project.So we have created a simple class where you can easily create pagination for any grid or listing. following are the simple steps
Set frame height dynamically using javascript

Hi Geeks,
As I faced the problem in so many times for Set Iframe height dynamically using javascript or setting the Iframe height as per its content, If we add the fix height to Iframe tag directly then
form validation library in php

Hi Geeks,
Today i am sharing a generic class for
Form validation library in php
& it also populate if form validation failed. First of all you can download the ‘form validation library in php’ by clicking on
Verify Email is Exists in real world or not ,Download Php code

Hi Geeks,
As per need in one of my project, i have used following code for Check Email is Exists in real world or not .
In this tutorial we have made a class for checking a email
Custom form validation in Codeigniter

Hi Geeks,
Today i am sharing you the Custom form validation example in codeigniter. Suppose we have a custom requirement to validate the data with our own custom rules like email already exist in database, So for this
How to work with AngularJS as frontend and PHP MYSQL as backend

Hi Geeks,
In this tutorial you will learn that how to work with AngularJs as web frontend or in any hybrid app and get retrieve data from database using php and mysql. We have created restful webservice for
Array to Xml Conversion and Xml to Array Convert in PHP

Hi Geeks,
Today i am sharing you a code snippet for converting xml to array with attributes also and vice versa (Convert array to xml). This class is very useful to parse rss feed and to make rss
CONVERT HTML TO PDF IN CODEIGNITER Using MPDF

Hi Geeks,
Today I am Sharing you the code for making pdf or download pdf files in codeigniter. In this Code snippet we have used the MPDF Kit for generating pdf of html views or dynamic templates. So