Hi Guys In this tutorial,i will show you how to implement server side validation example,it can easyli Codeigniter Server Side Form Validation With Error Message in this example,normal validation two sides like server side and client side, i will give you simple example of form validation in codeigniter application. we will use form_validation library for add form validation with error message display in codeigniter. we can use defaulut following validation rules of codeigniter.We can use default following validation rules of codeigniter required regex_match matches differs is_unique min_length max_length exact_length greater_than You can see more from here Codeigniter Validation Rules. Exmaple So here i gave you full example of form validation in codeigniter application. i created simple form with first name, last name, email and Mobile Number like contact us form and i set server side validation. Step:1 Download Codeigniter Project Here in this step we wi