cedric | Laboratory 2

General Instructions

Create [fullname].php.
Output must display VALID or INVALID OR sanitized result if required.

There were six different types of tasks, and I was assigned to task #5.

No	Task	Requirements
1	Full name validation (basic regex)	Only letters, spaces, and hyphens allowed
		Required
		Use `preg_match`
2	Email validation (`filter_var`)	Use HTML type email
		Use PHP `filter_var`
		If valid, display "Valid email"; if not, "Invalid email"
3	Username validation	Must be 5-15 characters
		Letters and numbers only
		No spaces
4	Comment box (XSS Prevention)	Textarea input
		Must sanitize (allow codes as input)
		Display the output with no formatting or triggering code
5	URL Validation	Use `filter_var()`
		Must start with `http` or `https`
6	Student ID format	4 numbers-6 numbers + uppercase letters
		Example: `1234-1234AB`

Tasks

Using filter_var().
Must start in http or https.

Code

cedric_bryan_m_angulo.php

<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Laboratory 2</title>
</head>

<body>
  <form method="POST">
    <label for="urlInput">Enter a URL:</label>
    <input type="text" id="urlInput" name="url" required />
    <input type="submit" value="Submit" name="validate_url" />
  </form>

  <?php
  if (isset($_POST['validate_url'])) {

    $url = $_POST['url'];

    if (filter_var($url, FILTER_VALIDATE_URL)) {
      echo "<p style='color: green;'>Valid URL: <a href='$url' target='_blank'>$url</a></p>";
    } else {
      echo "<p style='color: red;'>Invalid URL.</p>";
    }
  }
  ?>
</body>

</html>

I got 95 because I forgot to use url as the input type.