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Code Runner - Visual Studio Marketplace

8 hours ago code-runner.showStopIconInEditorTitleMenu: Whether to show 'Stop Code Run' icon in editor title menu when code is running. (Default is true ) code-runner.terminalRoot : For Windows system, replaces the Windows style drive letter in the command with a Unix style root when using a custom shell as the terminal, like Bash or Cgywin.

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Log in - Learn to Code - for Free Codecademy

6 hours ago Start learning today so you can skill up and stand out. As leaders in online education and learning to code, we’re a community of 50 million and growing. Start with HTML, CSS, JavaScript, SQL, Python, Data Science, and more.

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Secure Login System with PHP and MySQL

10 hours ago

  • 1. Getting Started 1. Getting Started There are a few steps we need to take before we create our secure login system. We need to set-up our web server environment and make sure we have the required extensions enabled. 1.1. Requirements If you haven't got a local web server set-up I recommend you download and install . XAMPP is a cross-platform web server package that includes the essentials for back-end developers. It includes PHP, MySQL, Apache, phpMyAdmin, and more. No need to install all the software separately. 1.2. What You Will Learn in this Tutorial Form Design — Design a login form with HTML5 and CSS3. Prepared SQL Queries — How to prepare SQL queries to prevent SQL injection as this will prevent your database from being exposed. Basic Validation — Validating form data that is sent to the server (username and password). Session Management — Initialize sessions and store retrieved database results. 1.3. File Structure & Setup We now need to start our web server and create the files and directories we're going to use for our login system. Open XAMPP Control Panel Next to the Apache module click Start Next to the MySQL module click Start Navigate to XAMPPs installation folder (C:\xampp) Open the htdocs folder Create the following folders and files:
  • 2. Creating the Login Form Design 2. Creating the Login Form Design We need a login form for our websites users to interact with and enter their details. We will be using HTML and CSS for this part of the tutorial as PHP will not be necessary on this page. Edit the index.html file with your favorite code editor as we're going to edit this file and add the login form code. Add the following code: HTML <!DOCTYPE html> <html> <head> <meta charset="utf-8"> <title>Login</title> <link rel="stylesheet" href="https://use.fontawesome.com/releases/v5.7.1/css/all.css"> </head> <body> <div class="login"> <h1>Login</h1> <form action="authenticate.php" method="post"> <label for="username"> <i class="fas fa-user"></i> </label> <input type="text" name="username" placeholder="Username" id="username" required> <label for="password"> <i class="fas fa-lock"></i> </label> <input type="password" name="password" placeholder="Password" id="password" required> <input type="submit" value="Login"> </form> </div> </body> </html> What this will look like if we navigate to the index page in our web browser: http://localhost/phplogin/index.html Pretty basic right? Let's open up our style.css file and add the following code: CSS * { box-sizing: border-box; font-family: -apple-system, BlinkMacSystemFont, "segoe ui", roboto, oxygen, ubuntu, cantarell, "fira sans", "droid sans", "helvetica neue", Arial, sans-serif; font-size: 16px; -webkit-font-smoothing: antialiased; -moz-osx-font-smoothing: grayscale; } body { background-color: #435165; } .login { width: 400px; background-color: #ffffff; box-shadow: 0 0 9px 0 rgba(0, 0, 0, 0.3); margin: 100px auto; } .login h1 { text-align: center; color: #5b6574; font-size: 24px; padding: 20px 0 20px 0; border-bottom: 1px solid #dee0e4; } .login form { display: flex; flex-wrap: wrap; justify-content: center; padding-top: 20px; } .login form label { display: flex; justify-content: center; align-items: center; width: 50px; height: 50px; background-color: #3274d6; color: #ffffff; } .login form input[type="password"], .login form input[type="text"] { width: 310px; height: 50px; border: 1px solid #dee0e4; margin-bottom: 20px; padding: 0 15px; } .login form input[type="submit"] { width: 100%; padding: 15px; margin-top: 20px; background-color: #3274d6; border: 0; cursor: pointer; font-weight: bold; color: #ffffff; transition: background-color 0.2s; } .login form input[type="submit"]:hover { background-color: #2868c7; transition: background-color 0.2s; } We need to include our stylesheet in our index.html file so we must add the following code to the head section: HTML <link href="style.css" rel="stylesheet" type="text/css"> And now if we refresh the index.html page in our web browser our login form will look more appealing: http://localhost/phplogin/index.html Let's narrow down the form so we can get a better understanding on what's going on. Form — We need to use both the action and post attributes. The action attribute will be set to the authentication file. When the form is submitted, the form data will be sent to the authentication file for processing. In addition, the method is declared as post as this will allow us to process the form data using the POST request method. Input (text/password) — We need to name our form fields so the server can recognize them. The value of the attribute name we can declare as username, which we can use to retrieve the post variable in our authentication file to get the data, for example: $_POST['username']. Input (submit) — On form submission the data will be sent to our authentication file for processing.
  • 3. Creating the Database and setting-up Tables 3. Creating the Database and setting-up Tables For this part, you will need to access your MySQL database, either using or your preferred MySQL database management application. Follow the below instructions if you're using phpMyAdmin. Navigate to: http://localhost/phpmyadmin/ Click the Databases tab at the top Under Create database, type in phplogin in the text box Select utf8_general_ci as the collation Click Create You can use your own database name, but for this tutorial, we'll use phplogin. What we need now is an accounts table as this will store all the accounts (usernames, passwords, emails, etc) that are registered with the system. Click the database on the left side panel (phplogin) and execute the following SQL statement: SQL CREATE TABLE IF NOT EXISTS `accounts` ( `id` int(11) NOT NULL AUTO_INCREMENT, `username` varchar(50) NOT NULL, `password` varchar(255) NOT NULL, `email` varchar(100) NOT NULL, PRIMARY KEY (`id`) ) ENGINE=InnoDB AUTO_INCREMENT=2 DEFAULT CHARSET=utf8; INSERT INTO `accounts` (`id`, `username`, `password`, `email`) VALUES (1, 'test', '$2y$10$SfhYIDtn.iOuCW7zfoFLuuZHX6lja4lF4XA4JqNmpiH/.P3zB8JCa', '[email protected]'); On phpMyAdmin this should look like: http://localhost/phpmyadmin/ The above SQL statement code will create the accounts table with the columns id, username, password, and email. The SQL statement will insert a test account with the username: test, and the password: test. The test account will be used for testing purposes to make sure our login system is functioning correctly.
  • 4. Authenticating Users with PHP 4. Authenticating Users with PHP Now that we have our database setup, we can go ahead and start coding with PHP. We're going to start with the authentication file, which will process and validate the form data that we'll send from our index.html file. Edit the authenticate.php file and add the following: PHP <?php session_start(); // Change this to your connection info. $DATABASE_HOST = 'localhost'; $DATABASE_USER = 'root'; $DATABASE_PASS = ''; $DATABASE_NAME = 'phplogin'; // Try and connect using the info above. $con = mysqli_connect($DATABASE_HOST, $DATABASE_USER, $DATABASE_PASS, $DATABASE_NAME); if ( mysqli_connect_errno() ) { // If there is an error with the connection, stop the script and display the error. exit('Failed to connect to MySQL: ' . mysqli_connect_error()); } The first thing we have to do is start the session as this allows us to preserve account details on the server and will be used later on to remember logged-in users. Connecting to the database is essential. Without it, how can we retrieve and store information related to our users? Therefore, we must make sure to update the variables to reflect our MySQL database credentials. Add below: PHP // Now we check if the data from the login form was submitted, isset() will check if the data exists. if ( !isset($_POST['username'], $_POST['password']) ) { // Could not get the data that should have been sent. exit('Please fill both the username and password fields!'); } This will make sure the form data exists, whereas if the user tries to access the file without submitting the form, it will output a simple error. Add below: PHP // Prepare our SQL, preparing the SQL statement will prevent SQL injection. if ($stmt = $con->prepare('SELECT id, password FROM accounts WHERE username = ?')) { // Bind parameters (s = string, i = int, b = blob, etc), in our case the username is a string so we use "s" $stmt->bind_param('s', $_POST['username']); $stmt->execute(); // Store the result so we can check if the account exists in the database. $stmt->store_result(); $stmt->close(); } ?> This will prepare the SQL statement that will select the id and password columns from the accounts table. It will bind the username to the SQL statement, execute, and then store the result. After this line: $stmt->store_result(); Add: PHP if ($stmt->num_rows > 0) { $stmt->bind_result($id, $password); $stmt->fetch(); // Account exists, now we verify the password. // Note: remember to use password_hash in your registration file to store the hashed passwords. if (password_verify($_POST['password'], $password)) { // Verification success! User has logged-in! // Create sessions, so we know the user is logged in, they basically act like cookies but remember the data on the server. session_regenerate_id(); $_SESSION['loggedin'] = TRUE; $_SESSION['name'] = $_POST['username']; $_SESSION['id'] = $id; echo 'Welcome ' . $_SESSION['name'] . '!'; } else { // Incorrect password echo 'Incorrect username and/or password!'; } } else { // Incorrect username echo 'Incorrect username and/or password!'; } First, we need to check if the query has returned any results. If the username doesn't exist in the database then there would be no results. If the username exists, we can bind the results to the variables: $id and $password. Subsequently, we proceed to verify the password with the function. Only passwords that were created with the function will work. If you don't want to use any password encryption method, you can simply replace the following code: PHP if (password_verify($_POST['password'], $password)) { With: PHP if ($_POST['password'] === $password) { Upon successful authentication from the user, session variables will be initialized and remembered throughout the entire process. These session variables are stored on the server and in the user's browser as we'll use these variables to determine if the user is logged-in or not, and to associate the session variables with our retrieved MySQL database results. Now we can test the login system and make sure the authentication works correctly, navigate to http://localhost/phplogin/index.html Type in a random username and password, and click the login button, it should output an error that should look like the following: http://localhost/phplogin/authenticate.php Don't worry, it's not broke! If we go back to our login form and enter test for both the username and password fields the authentication page will look like the following: http://localhost/phplogin/authenticate.php If you get an error make sure to double-check your code to make sure you haven't missed anything or check if the test account exists in your database.
  • 5. Creating the Home Page 5. Creating the Home Page The home page will be the first page our users see when they've logged-in. The only way they can access this page is if they're logged-in, whereas if they not they will be redirected back to the login page. Edit the home.php file and add the following code: PHP <?php // We need to use sessions, so you should always start sessions using the below code. session_start(); // If the user is not logged in redirect to the login page... if (!isset($_SESSION['loggedin'])) { header('Location: index.html'); exit; } ?> Basically, what happens here is we check if the user is logged in, if they are not we redirect them to the homepage, remember the $_SESSION['loggedin'] variable we defined in the authenticate.php file? This is what we use to determine if users are logged in or not. Now we can add some HTML to our home page. Below the closing tag add the following code: PHP <!DOCTYPE html> <html> <head> <meta charset="utf-8"> <title>Home Page</title> <link href="style.css" rel="stylesheet" type="text/css"> <link rel="stylesheet" href="https://use.fontawesome.com/releases/v5.7.1/css/all.css"> </head> <body class="loggedin"> <nav class="navtop"> <div> <h1>Website Title</h1> <a href="profile.php"><i class="fas fa-user-circle"></i>Profile</a> <a href="logout.php"><i class="fas fa-sign-out-alt"></i>Logout</a> </div> </nav> <div class="content"> <h2>Home Page</h2> <p>Welcome back, <?=$_SESSION['name']?>!</p> </div> </body> </html> As you can see here all we do is create the layout for our home page and greet the user. The CSS for the home page, add to style.css: PHP .navtop { background-color: #2f3947; height: 60px; width: 100%; border: 0; } .navtop div { display: flex; margin: 0 auto; width: 1000px; height: 100%; } .navtop div h1, .navtop div a { display: inline-flex; align-items: center; } .navtop div h1 { flex: 1; font-size: 24px; padding: 0; margin: 0; color: #eaebed; font-weight: normal; } .navtop div a { padding: 0 20px; text-decoration: none; color: #c1c4c8; font-weight: bold; } .navtop div a i { padding: 2px 8px 0 0; } .navtop div a:hover { color: #eaebed; } body.loggedin { background-color: #f3f4f7; } .content { width: 1000px; margin: 0 auto; } .content h2 { margin: 0; padding: 25px 0; font-size: 22px; border-bottom: 1px solid #e0e0e3; color: #4a536e; } .content > p, .content > div { box-shadow: 0 0 5px 0 rgba(0, 0, 0, 0.1); margin: 25px 0; padding: 25px; background-color: #fff; } .content > p table td, .content > div table td { padding: 5px; } .content > p table td:first-child, .content > div table td:first-child { font-weight: bold; color: #4a536e; padding-right: 15px; } .content > div p { padding: 5px; margin: 0 0 10px 0; } Now that we have our home page setup we can redirect our users from the authenticate.php file, edit authenticate.php and replace this line of code: PHP echo 'Welcome ' . $_SESSION['name'] . '!'; With: PHP header('Location: home.php'); If you log-in with the test account you should see something like this: http://localhost/phplogin/home.php This is a pretty basic home page, you can customize it to how you want now that you understand how it works.
  • 6. Creating the Profile Page 6. Creating the Profile Page The profile page will display the account information for the logged-in user. Edit the profile.php file and add the following code: PHP <?php // We need to use sessions, so you should always start sessions using the below code. session_start(); // If the user is not logged in redirect to the login page... if (!isset($_SESSION['loggedin'])) { header('Location: index.html'); exit; } $DATABASE_HOST = 'localhost'; $DATABASE_USER = 'root'; $DATABASE_PASS = ''; $DATABASE_NAME = 'phplogin'; $con = mysqli_connect($DATABASE_HOST, $DATABASE_USER, $DATABASE_PASS, $DATABASE_NAME); if (mysqli_connect_errno()) { exit('Failed to connect to MySQL: ' . mysqli_connect_error()); } // We don't have the password or email info stored in sessions so instead we can get the results from the database. $stmt = $con->prepare('SELECT password, email FROM accounts WHERE id = ?'); // In this case we can use the account ID to get the account info. $stmt->bind_param('i', $_SESSION['id']); $stmt->execute(); $stmt->bind_result($password, $email); $stmt->fetch(); $stmt->close(); ?> This demonstrates how you can get additional account information from the database, as before with home page we didn't need to connect to the database because we used the session data. We're going to display all the account information for the user, so we need to get the password and email fields from the database, we don't need to get the username or id fields because we've them stored in session variables that were created in the authenticate.php file. After the closing tag, add the following code: PHP <!DOCTYPE html> <html> <head> <meta charset="utf-8"> <title>Profile Page</title> <link href="style.css" rel="stylesheet" type="text/css"> <link rel="stylesheet" href="https://use.fontawesome.com/releases/v5.7.1/css/all.css"> </head> <body class="loggedin"> <nav class="navtop"> <div> <h1>Website Title</h1> <a href="profile.php"><i class="fas fa-user-circle"></i>Profile</a> <a href="logout.php"><i class="fas fa-sign-out-alt"></i>Logout</a> </div> </nav> <div class="content"> <h2>Profile Page</h2> <div> <p>Your account details are below:</p> <table> <tr> <td>Username:</td> <td><?=$_SESSION['name']?></td> </tr> <tr> <td>Password:</td> <td><?=$password?></td> </tr> <tr> <td>Email:</td> <td><?=$email?></td> </tr> </table> </div> </div> </body> </html> A simple layout to display account information, if you navigate to profile.php this will look like: http://localhost/phplogin/profile.php Remember the passwords are encrypted so you cannot see the decrypted password unless you create a new session variable and store the password from the authenticate.php file.
  • 7. Creating the Logout Script 7. Creating the Logout Script Creating the logout script is very simple, all you need to do is destroy the sessions that we created. Edit the logout.php file and add the following code: PHP <?php session_start(); session_destroy(); // Redirect to the login page: header('Location: index.html'); ?> Initialize sessions and destroy them (if any) and redirect the user to the login page, we use sessions to determine if the user is logged in or not so by removing them the user will not be logged in.

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Login & Support ADP RUN Login for Employees and

11 hours ago

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Learn to Code with Interactive Tutorials - Scrimba.com

7 hours ago Our interactive screencasts let you edit the code whenever you want, just as if you were pair programming with the teacher. As a result, you will code more and learn faster. Give it a test drive here. 2. Get help and support from your peers. Right now, there …

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Compile and run the code with online compiler and IDE

1 hours ago CodeChef - A Platform for Aspiring Programmers. CodeChef was created as a platform to help programmers make it big in the world of algorithms, computer programming, and programming contests.At CodeChef we work hard to revive the geek in you by hosting a programming contest at the start of the month and two smaller programming challenges at the middle and end of the month.

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Log In - ESPN

8 hours ago Log In - ESPN

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CodeMonkey

2 hours ago CodeMonkey is a fun online game that teaches you how to code. Real world programming language. Write code. Catch bananas. Save the world.

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ProDemand Automotive Repair Information - Mitchell1, Snap

5 hours ago ProDemand is the premier online solution for automotive repair information, vehicle maintenance, diagnostic data, and labor estimating.

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Mimecast Login

11 hours ago Mimecast Login

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Code.org

7 hours ago Use your creativity and problem solving skills to explore and build underwater worlds with code! AI for Oceans Learn how AI and machine learning can be used to address world problems.

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CNC Program Simulator

5 hours ago Enable raycasting. Used to detect cursor over toolpath. Enable 3D Mouse. Pan Camera Left Click Left Click Right Click Middle Click. Orbit Camera Right Click Left Click Right Click Middle Click. Zoom Camera Middle Click Left Click Right Click Middle Click. …

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Practice Fusion - EHR Login

8 hours ago Log in to your Practice Fusion EHR account with valid email and password. Practice Fusion is the #1 cloud-based electronic health record (EHR) platform for doctors ...

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Clover Dashboard

3 hours ago Clover Dashboard App

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DealerCONNECT Login

8 hours ago Forgot Password * - Required Field You have been redirected to this page either because you tried to login without logging out or you do not have access to the application you requested.

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Sign In

12 hours ago Sign In: To help protect your account, you may be required to answer additional verification questions during the Sign In process. User Name:

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CodeSandbox: Online Code Editor and IDE for Rapid Web

3 hours ago play.js includes all the tools you need to develop any JavaScript project: git client, code editor, files manager, embedded web browser with developer tools, dependencies manager, interactive console and many more. Syntax highlighting for a wide variety of languages. Real JavaScript auto-complete that reacts to your file's content.

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Online QR Code Generator

11 hours ago Free Online QR Code Generator to make your own QR Codes. Online QR Code Barcode Generator is a free, online, real-time to generate QR Code Barcode. Now you begin to create a QR Code or Barcode! Free Online Barcode Generator to make your own Barcode.

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Federal Student Aid

2 hours ago Federal Student Aid ... Loading...

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Frequently Asked Questions

  • Which is the terminal root for code runner?

    code-runner.terminalRoot: For Windows system, replaces the Windows style drive letter in the command with a Unix style root when using a custom shell as the terminal, like Bash or Cgywin. code-runner.temporaryFileName: Temporary file name used in running selected code snippet.

  • Can you compile and run code with CodeChef?

    Code, Compile & Run Compile & run your code with the CodeChef online IDE. Our online compiler supports multiple programming languages like Python, C++, C, Kotlin, NodeJS, and many more.

  • How to create an ADP run login account?

    On the Login page, click CREATE ACCOUNT. On the next page, enter your temporary user ID and password and click Next. Follow the instructions to complete the registration process. Please contact your company's RUN Powered by ADP administrator for assistance.

  • How do I update Visual Studio Code?

    Open Visual Studio From the Windows Start menu, choose Visual Studio 2019. Under Get started, choose any option to open the IDE. In the Visual Studio 2019 update message, choose View details. In the Update downloaded and ready to install dialog box, choose Update.

  • How do I uninstall Visual Studio Code?

    If you have a problem to remove or uninstall completelyVisual Studio Code on Windows 10. Here is the simple way to delete Microsoft Visual Studio Code with all the S ettings and Extensions. Find the location C:UsersShah907AppDataLocalProgramsMicrosoft VS Code Insiders. Click on " unins000.exe " and open it to uninstall.

  • Is Visual Studio Code free?

    Visual Studio Code is free, cross platform, super fast and lightweight code editor developed by Microsoft for Windows, Linux and OS X. Since a lot of developers use windows as their development environment, but there are also lots of developers using Linux and Mac.

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