What are the differences between using GET and POST methods to pass data between PHP pages, and how should they be used effectively?

When passing data between PHP pages, using the GET method appends data to the URL, making it visible in the address bar. This method is suitable for non-sensitive information and when bookmarking or sharing URLs. On the other hand, the POST method sends data in the HTTP request body, keeping it hidden from users. This method is recommended for sensitive information like passwords or personal details. Example PHP code snippet for using the GET method: 

// Page 1 sending data
<a href="page2.php?name=John&age=25">Go to Page 2</a>

// Page 2 receiving data
$name = $_GET['name'];
$age = $_GET['age'];
echo "Name: $name, Age: $age";
```

Example PHP code snippet for using the POST method:

```php
// Page 1 sending data
<form action="page2.php" method="post">
    <input type="text" name="username">
    <input type="password" name="password">
    <button type="submit">Submit</button>
</form>

// Page 2 receiving data
$username = $_POST['username'];
$password = $_POST['password'];
echo "Username: $username, Password: $password";

Keywords

GET POST data passing PHP pages effective use

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