i need help approaching this php assignment. any tips would help.. thank you A A
ID: 3822553 • Letter: I
Question
i need help approaching this php assignment. any tips would help.. thank you
Explanation / Answer
In php first you have to create a form...
i will guide you how to create a form and store and retrive information from php database connection using some simple registration from...
first of all you think what are the relations needed to satisfy the given conditions and what are the possible attributes and it's values...
Then create a database and add relations to the database and conncet it to php...
sava the below code in dbconnect.php
<?php
// this will avoid mysql_connect() deprecation error.
error_reporting( ~E_DEPRECATED & ~E_NOTICE );
// but I strongly suggest you to use PDO or MySQLi.
define('DBHOST', 'localhost');
define('DBUSER', 'root');
define('DBPASS', 'mysql');
define('DBNAME', 'dbtest');
$conn = mysql_connect(DBHOST,DBUSER,DBPASS);
$dbcon = mysql_select_db(DBNAME);
if ( !$conn ) {
die("Connection failed : " . mysql_error());
}
if ( !$dbcon ) {
die("Database Connection failed : " . mysql_error());
}
sava this below code to register.php
<?php
ob_start();
session_start();
if( isset($_SESSION['user'])!="" ){
header("Location: home.php");
}
include_once 'dbconnect.php';
$error = false;
if ( isset($_POST['btn-signup']) ) {
// clean user inputs to prevent sql injections
$name = trim($_POST['name']);
$name = strip_tags($name);
$name = htmlspecialchars($name);
$email = trim($_POST['email']);
$email = strip_tags($email);
$email = htmlspecialchars($email);
$pass = trim($_POST['pass']);
$pass = strip_tags($pass);
$pass = htmlspecialchars($pass);
$course1 = trim($_POST['course1']);
$course1 = strip_tags($course1);
$course1 = htmlspecialchars($course1);
$course2 = trim($_POST['course2']);
$course2 = strip_tags($course2);
$course2 = htmlspecialchars($course2);
$course3 = trim($_POST['course3']);
$course3 = strip_tags($course3);
$course3 = htmlspecialchars($course3);
// basic name validation
if (empty($name)) {
$error = true;
$nameError = "Please enter your full name.";
} else if (strlen($name) < 3) {
$error = true;
$nameError = "Name must have atleat 3 characters.";
} else if (!preg_match("/^[a-zA-Z ]+$/",$name)) {
$error = true;
$nameError = "Name must contain alphabets and space.";
}
//basic email validation
if ( !filter_var($email,FILTER_VALIDATE_EMAIL) ) {
$error = true;
$emailError = "Please enter valid email address.";
} else {
// check email exist or not
$query = "SELECT userEmail FROM users WHERE userEmail='$email'";
$result = mysql_query($query);
$count = mysql_num_rows($result);
if($count!=0){
$error = true;
$emailError = "Provided Email is already in use.";
}
}
// password validation
if (empty($pass)){
$error = true;
$passError = "Please enter password.";
} else if(strlen($pass) < 6) {
$error = true;
$passError = "Password must have atleast 6 characters.";
}
// password encrypt using SHA256();
$password = hash('sha256', $pass);
// if there's no error, continue to signup
if( !$error ) {
$query = "INSERT INTO users(userName,userEmail,userPass,course1,course2,course3) VALUES('$name','$email','$password','$course1','$course2','$course3')";
$res = mysql_query($query);
if ($res) {
$errTyp = "success";
$errMSG = "Successfully registered, you may login now";
unset($name);
unset($email);
unset($pass);
unset($course1);
unset($course2);
unset($course3);
} else {
$errTyp = "danger";
$errMSG = "Something went wrong, try again later...";
}
}
}
?>
<!DOCTYPE html>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>Coding Cage - Login & Registration System</title>
<link rel="stylesheet" href="assets/css/bootstrap.min.css" type="text/css" />
<link rel="stylesheet" href="style.css" type="text/css" />
</head>
<body>
<div class="container">
<div id="login-form">
<form method="post" action="<?php echo htmlspecialchars($_SERVER['PHP_SELF']); ?>" autocomplete="off">
<div class="col-md-12">
<div class="form-group">
<h2 class="">Registration</h2>
</div>
<div class="form-group">
<hr />
</div>
<?php
if ( isset($errMSG) ) {
?>
<div class="form-group">
<div class="alert alert-<?php echo ($errTyp=="success") ? "success" : $errTyp; ?>">
<span class="glyphicon glyphicon-info-sign"></span> <?php echo $errMSG; ?>
</div>
</div>
<?php
}
?>
<div class="form-group">
<div class="input-group">
<span class="input-group-addon"><span class="glyphicon glyphicon-user"></span></span>
<input type="text" name="name" class="form-control" placeholder="Enter Name" maxlength="50" value="<?php echo $name ?>" />
</div>
<span class="text-danger"><?php echo $nameError; ?></span>
</div>
<div class="form-group">
<div class="input-group">
<span class="input-group-addon"><span class="glyphicon glyphicon-envelope"></span></span>
<input type="email" name="email" class="form-control" placeholder="Enter Your Email" maxlength="40" value="<?php echo $email ?>" />
</div>
<span class="text-danger"><?php echo $emailError; ?></span>
</div>
<div class="form-group">
<div class="input-group">
<span class="input-group-addon"><span class="glyphicon glyphicon-lock"></span></span>
<input type="password" name="pass" class="form-control" placeholder="Enter Password" maxlength="15" />
</div>
<span class="text-danger"><?php echo $passError; ?></span>
</div>
<div class="input-group">
<span class="input-group-addon"><span class="glyphicon glyphicon-envelope"></span></span>
<input type="course1" name="course1" class="form-control" placeholder="Enter Course1" maxlength="40" value="<?php echo $course1 ?>" />
</div>
</div>
<div class="input-group">
<span class="input-group-addon"><span class="glyphicon glyphicon-envelope"></span></span>
<input type="course2" name="course2" class="form-control" placeholder="Enter Course2" maxlength="40" value="<?php echo $course2 ?>" />
</div>
</div>
<div class="input-group">
<span class="input-group-addon"><span class="glyphicon glyphicon-envelope"></span></span>
<input type="course3" name="course3" class="form-control" placeholder="Enter Course3" maxlength="40" value="<?php echo $course3 ?>" />
</div>
</div>
<div class="form-group">
<hr />
</div>
<div class="form-group">
<button type="submit" class="btn btn-block btn-primary" name="btn-signup">Submit Registration</button>
</div>
<div class="form-group">
<hr />
</div>
<div class="form-group">
<a href="index.php">Sign in Here...</a>
</div>
</div>
</form>
</div>
</div>
</body>
</html>
<?php ob_end_flush(); ?>
and below is the important code... which is index page....
<?php
ob_start();
session_start();
require_once 'dbconnect.php';
// it will never let you open index(login) page if session is set
if ( isset($_SESSION['user'])!="" ) {
header("Location: home.php");
exit;
}
$error = false;
if( isset($_POST['btn-login']) ) {
// prevent sql injections/ clear user invalid inputs
$email = trim($_POST['email']);
$email = strip_tags($email);
$email = htmlspecialchars($email);
$pass = trim($_POST['pass']);
$pass = strip_tags($pass);
$pass = htmlspecialchars($pass);
// prevent sql injections / clear user invalid inputs
if(empty($email)){
$error = true;
$emailError = "Please enter your email address.";
} else if ( !filter_var($email,FILTER_VALIDATE_EMAIL) ) {
$error = true;
$emailError = "Please enter valid email address.";
}
if(empty($pass)){
$error = true;
$passError = "Please enter your password.";
}
// if there's no error, continue to login
if (!$error) {
$password = hash('sha256', $pass); // password hashing using SHA256
$res=mysql_query("SELECT userId, userName, userPass FROM users WHERE userEmail='$email'");
$row=mysql_fetch_array($res);
$count = mysql_num_rows($res); // if uname/pass correct it returns must be 1 row
if( $count == 1 && $row['userPass']==$password ) {
$_SESSION['user'] = $row['userId'];
header("Location: home.php");
} else {
$errMSG = "Incorrect Credentials, Try again...";
}
}
}
?>
<!DOCTYPE html>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>Coding Cage - Login & Registration System</title>
<link rel="stylesheet" href="assets/css/bootstrap.min.css" type="text/css" />
<link rel="stylesheet" href="style.css" type="text/css" />
</head>
<body>
<div class="container">
<div id="login-form">
<form method="post" action="<?php echo htmlspecialchars($_SERVER['PHP_SELF']); ?>" autocomplete="off">
<div class="col-md-12">
<div class="form-group">
<h2 class="">Sign In.</h2>
</div>
<div class="form-group">
<hr />
</div>
<?php
if ( isset($errMSG) ) {
?>
<div class="form-group">
<div class="alert alert-danger">
<span class="glyphicon glyphicon-info-sign"></span> <?php echo $errMSG; ?>
</div>
</div>
<?php
}
?>
<div class="form-group">
<div class="input-group">
<span class="input-group-addon"><span class="glyphicon glyphicon-envelope"></span></span>
<input type="email" name="email" class="form-control" placeholder="Your Email" value="<?php echo $email; ?>" maxlength="40" />
</div>
<span class="text-danger"><?php echo $emailError; ?></span>
</div>
<div class="form-group">
<div class="input-group">
<span class="input-group-addon"><span class="glyphicon glyphicon-lock"></span></span>
<input type="password" name="pass" class="form-control" placeholder="Your Password" maxlength="15" />
</div>
<span class="text-danger"><?php echo $passError; ?></span>
</div>
<div class="form-group">
<hr />
</div>
<div class="form-group">
<button type="submit" class="btn btn-block btn-primary" name="btn-login">Sign In</button>
</div>
<div class="form-group">
<hr />
</div>
<div class="form-group">
Not done Registration..? <a href="register.php">...Registration Here...</a>
</div>
</div>
</form>
</div>
</div>
</body>
</html>
<?php ob_end_flush(); ?>
in index page you implement your code according to the relations you implented....
after login page.. you implement your user code
like display manage profile extra....
it is very simple if your relations and attributes are correctly placed...
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