Handling Forms in PHP

Forms let users send data to your server.

Simple contact form

<form method="post">
  <input name="name" placeholder="Name">
  <input name="email" placeholder="Email">
  <button>Send</button>
</form>

PHP handling

<?php
if ($_SERVER['REQUEST_METHOD'] === 'POST') {
  $name = trim($_POST['name'] ?? '');
  $email = trim($_POST['email'] ?? '');

  if ($name === '' || $email === '') {
    echo "All fields required";
  } else {
    echo "Thanks, $name";
  }
}
?>

Security tip

Always validate and sanitize user input.

Next: String functions and text processing.