Today, We want to share with you PHP CodeIgniter 3 Validation Example Tutorial From Scratch.In this post we will show you CodeIgniter and Ajax using jQuery, hear for Php CodeIgniter Server Side Form Validation Example we will give you demo and example for implement.In this post, we will learn about Ajax contact us form validation in Codeigniter 3 using javascript jQuery with an example.

PHP CodeIgniter 3 Validation Example Tutorial From Scratch

There are the Following The simple About PHP CodeIgniter 3 Validation Example Tutorial From Scratch Full Information With Example and source code.

As I will cover this Post with live Working example to develop PHP jQuery Ajax CodeIgniter Form Validation, so the some major files and Directory structures for this example is following below.

• PHP jQuery Ajax CodeIgniter Form Validation
• FormCiValidate.php
• ajax_form_validate.php

Step 1: Include Codeigniter 3 Routes

Include routes to handle ajax request

<?php
defined('BASEPATH') OR exit('No direct script access allowed');


$route['default_controller'] = 'welcome';
$route['404_override'] = '';
$route['translate_uri_dashes'] = FALSE;

$route['simple-ajax-frm-validate'] = "FormCiValidate";
$route['simple-ajax-frm-validate/post']['post'] = "FormCiValidate/validateForm";

Step 2: Make FormCiValidate simple Controller Class

application/controllers/FormCiValidate.php

load->library('form_validation');
      $this->load->library('session');
   }

   public function index()
   {
      $this->load->view('ajax_form_validate');
   }

   public function validateForm()
   {
        $this->form_validation->set_rules('name', 'Name', 'required');
        $this->form_validation->set_rules('email', 'Email', 'required|valid_email');
        $this->form_validation->set_rules('comments', 'Comment', 'required');


        if ($this->form_validation->run() == FALSE){
            $errors = validation_errors();
            echo json_encode(['error'=>$errors]);
        }else{
           echo json_encode(['success'=>'Form submitted successfully.']);
        }
    }
}

Step3: Make HTML Interface View File

ajax_form_validate.php

   
    
     
    
  
   
  

    

      

        

        
		
PHP jQuery Ajax CodeIgniter Form Validation
       
        

          Name:
          
        

        

          Email:
          
        

        

          Comment:
          
        

        

          Submit
        
      
    
    
  
   


   
    $(document).ready(function() {
      $(".frm-submit").click(function(e){
        e.preventDefault();
        var name = $("input[name='name']").val();
        var email = $("input[name='email']").val();
        var comments = $("textarea[name='comments']").val();

        console.log($(this).closest('form').attr('action'));
          $.ajax({
              url: $(this).closest('form').attr('action'),
              type:$(this).closest('form').attr('method'),
              dataType: "json",
              data: {name:name, email:email, comments:comments},
              success: function(data) {
                  if($.isEmptyObject(data.error)){
                    $(".alert-info").css('display','none');
                    alert(data.success);
                  }else{
                    $(".alert-info").css('display','block');
                    $(".alert-info").html(data.error);
                  }
              }
          });


      }); 


  });

   

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