action.php

<?php
    $dbhost = "localhost";
    $dbuser = "root";
    $dbpass = "";
    $dbname = "login";
    $conn  = new mysqli($dbhost,$dbuser,$dbpass,$dbname);
    if($conn->connect_error){
        die("Could not connect to the database!" . $conn->connect_error);
    }
    else {
        echo "Connected successfully";
    }
//	$uname = check_input($_POST['uname']);
//	$pass = check_input($_POST['pass']);
//	$pass = sha1($pass);
////	echo "$uname";
//	echo "$pass";
    if(isset($_POST['action']) && $_POST['action'] == 'register'){
		    $uname = check_input($_POST['uname']);
        $email = check_input($_POST['email']);
        $pass = check_input($_POST['pass']);
        $cpass = check_input($_POST['cpass']);
        $pass = sha1($pass);
        $cpass = sha1($cpass);
        $created = date('Y-m-d');
		
		    if($pass!= $cpass){
            echo "Password did not matched!";
            exit();
        }	
        else{
            $sql = $conn -> prepare("SELECT * FROM users WHERE username=? OR email = ?");
 			      $sql -> bind_param('ss',$uname, $email);
            $sql -> execute();
        	  $result = $sql -> get_result();
        	$row=$result -> fetch_array(MYSQLI_ASSOC);
            if ($result['username'] == $uname) {
                echo "Username not availabe try different";
            }
            elseif ($result['email']==$email) {
                echo "email is already taken diiferent";
            }
            else {
                $stmt = $conn -> prepare("INSERT INTO users (username, email, pass, created) VALUES (?, ?, ?, ?)");
                $stmt -> bind_param('ssss', $username, $email, $pass, $created);
                if ($stmt->execute()) {
                    echo "Registrated sucessfully. Login Now!";
					$stmt->close();
					$conn->close();
		
                }
                else {
                    echo "Something went wrong. Please try again";
                }
            }
        }
		
	}
    function check_input($data){
        $data = trim($data);
        $data = stripslashes($data);
        $data = htmlspecialchars($data);
        return $data;
    }
 ?>