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PHP GET & POST Methods

Intermediate~30 min read

GET and POST are the two main HTTP methods for sending data to the server. Understanding when and how to use each is crucial for web development!

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GET vs POST

Feature GET POST
Visibility Visible in URL Hidden in request body
Bookmarkable Yes No
Data Size Limited (~2KB) Large (MB+)
Security Less secure More secure
Use Case Retrieving data Submitting data

GET Method

<?php
// URL: page.php?name=John&age=30
$name = $_GET['name'] ?? 'Guest';
$age = $_GET['age'] ?? 0;

echo "Hello, $name! You are $age years old.";
?>

POST Method

<?php
if ($_SERVER['REQUEST_METHOD'] === 'POST') {
    $username = $_POST['username'] ?? '';
    $password = $_POST['password'] ?? '';
    
    // Process login
}
?>

Summary

  • GET: URL parameters, bookmarkable
  • POST: Form data, more secure
  • Always sanitize: Use htmlspecialchars()
  • Check method: $_SERVER['REQUEST_METHOD']

What's Next?

Next, learn about Form Validation - ensuring data is correct and safe!

Previous Superglobals Overview
Next Form Validation