Form Validation tutorial with CodeIgniter in PHP
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<!-- Latest compiled and minified CSS -->
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.4.1/css/bootstrap.min.css">
<!-- jQuery library -->
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.7.1/jquery.min.js"></script>
<!-- Latest compiled JavaScript -->
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.4.1/js/bootstrap.min.js"></script>
<style>
.error {
color: red
}
</style>
<title>Registration Form</title>
</head>
<body>
<div class="jumbotron text-center">
</div>
<div class="row">
<div class="col-md-2"></div>
<div class="col-md-10">
<form method="post" action="<?php echo base_url("/Registration/add"); ?>">
<div class="form-group row">
<div class="col-sm-1"></div>
<label class="col-sm-3" for="name">Name</label>
<div class="col-sm-4">
<input type="text" class="form-control" placeholder="Enter name" name="userName" id="userName" value="<?php echo set_value("userName"); ?>">
</div>
<?php echo form_error("userName"); ?>
</div>
<div class="form-group row">
<div class="col-sm-1"></div>
<label class="col-sm-3" for="Email">Email</label>
<div class="col-sm-4">
<input type="text" class="form-control" placeholder="Enter Email" name="emailId" id="emailId" value="<?php echo set_value("emailId"); ?>">
</div>
<?php echo form_error("emailId"); ?>
</div>
<div class="form-group row">
<div class="col-sm-1"></div>
<label class="col-sm-3" for="name">Phone No</label>
<div class="col-sm-4">
<input type="text" class="form-control" placeholder="Enter Phone No" name="phoneNo" id="phoneNo" value="<?php echo set_value("phoneNo"); ?>">
</div>
<?php echo form_error("phoneNo"); ?>
</div>
<div class="form-group row">
<div class="col-sm-1"></div>
<label class="col-sm-3" for="name">Password</label>
<div class="col-sm-4">
<input type="password" class="form-control" placeholder="Enter Password" name="password" id="password" value="<?php echo set_value("password"); ?>">
</div>
<?php echo form_error("password"); ?>
</div>
<div class="form-group row">
<div class="col-sm-1"></div>
<label class="col-sm-3" for="name">Confirm Password</label>
<div class="col-sm-4">
<input type="password" class="form-control" placeholder="Confirm Password" name="confirm_password" id="confirm_password" value="<?php echo set_value("confirm_password"); ?>">
</div>
<?php echo form_error("confirm_password"); ?>
</div>
<div class="form-group row">
<div class="col-sm-4"></div>
<div class="col-sm-4">
<button type="submit" class="btn btn-primary">Add</button>
<a href="#" class="btn btn-danger">Back</a>
</div>
</div>
</form>
</div>
</div>
</body>
</html>
<?php
defined("BASEPATH") or exit("No direct script access allowed");
class Registration extends CI_Controller
{
//If we want to call any library in All Controller then we have to call that library in
//autoload.php and if we want to call any library in all functions of any one particular Controller class
//then we have to call that library in constructor of that particular Controller class.
public function __construct()
{
parent::__construct();
$this->load->library("form_validation");
}
public function index()
{
echo "call registration function";
}
public function add()
{
if ($this->input->post()) {
$this->form_validation->set_error_delimiters("<div class='error'>", "</div>");
$this->form_validation->set_rules("userName", "Username", "trim|required|callback_checkName");
$this->form_validation->set_rules("emailId", "Email", "trim|required|valid_email");
$this->form_validation->set_rules("phoneNo", "Phone Number", "required");
$this->form_validation->set_rules("password", "Password", "required");
$this->form_validation->set_rules("confirm_password", "Confirm Password", "required|matches[password]");
$this->form_validation->set_message("required", "{field} must be filled");
$this->form_validation->set_message("valid_email", "Email address must be a valid email");
if ($this->form_validation->run() == FALSE) {
echo "Error";
echo validation_errors();
} else {
echo "Success";
}
}
$this->load->view("reg_form");
}
public function checkName($str)
{
if ($str == "test") {
$this->form_validation->set_message("checkName", "The {field} field can not be the word 'test'");
return FALSE;
} else {
return TRUE;
}
}
}
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