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Sign up in CodeIgniter

Overview

In this example, we will discuss the user signup in CodeIgniter.

We will use three files for the user Signup.

  1. Signup.php (application\controllers\Signup.php)
  2. sign_up.php (application\views\sign_up.php)
  3. Signup_model.php (application\models\Signup_model.php)

applications/controllers/Signup.php

class Signup extends CI_Controller {
	public function __construct() {
		parent::__construct();
		$this->load->model('signup_model');
	}

	public function sign_up() {
		$this->load->view(‘sign_up’);	
	}

	public function register() {
		$name		= $this->input->post('name');
		$email		= $this->input->post('email');
		$password	= $this->input->post('pass');
		$phone	= $this->input->post('phone');

		$data = [
			‘name’		=> $name,
			‘email’		=> $email,
			‘password’	=> $password,
			‘phone’		=> $phone,
		];

		$result = $this->signup_model->is_user_exists($email);
		if(!$result) {
			$user = $this->signup_model->add($data);
			if($user) {
				echo “Your account created successfully”;
			} else {
				echo “Something went wrong.”;
			}
		} else {
			echo “User is already exists.”;
		}

	}

}

applications/models/Signup_model.php

class Signup_model extends CI_Model {
	public function add($data) {
		return $this->db->insert(‘user_info’, $data);
	} 

	public function is_user_exists($email) {
		$this->db->where([‘email’ => $email]);
		$query = $this->db->get(‘user_info’);
		return $query->num_rows();
	}
}

applications/views/sign_up.php

<form method="post" action="<?php echo base_url('user/register') ?>">
	<table width="600" align="center" border="1" cellspacing="5" cellpadding="5">
		<tr>
			<td colspan="2">
				<?php echo $error; ?>
			</td>
		</tr>
		<tr>
			<td width="230">Enter Your Name</td>
			<td width="329">
				<input type="text" name="name" />
			</td>
		</tr>
		<tr>
			<td>Enter Your Email</td>
			<td>
				<input type="text" name="email" />
			</td>
		</tr>
		<tr>
			<td>Enter Your Mobile</td>
			<td>
				<input type="text" name="phone" />
			</td>
		</tr>
		<tr>
			<td>Enter Your Password</td>
			<td>
				<input type="password" name="pass" />
			</td>
		</tr>
		<tr>
			<td colspan="2" align="center">
				<input type="submit" name="save" value="Register Me" />
			</td>
		</tr>
	</table>
</form>

Now, run following URL in the browser:

http://localhost/blog/index.php/Signup/sign_up