What is the difference between using GET and POST methods in PHP for passing data through URLs?

When passing data through URLs in PHP, the main difference between using the GET and POST methods is in how the data is sent. GET sends data through the URL, which can be seen and bookmarked by users, while POST sends data in the background, making it more secure for sensitive information like passwords. It is recommended to use POST for sending sensitive data, while GET can be used for non-sensitive information. 

```php
// Example of using POST method to pass data through URLs
<form method="post" action="process_data.php">
    <input type="text" name="username">
    <input type="password" name="password">
    <button type="submit">Submit</button>
</form>
```
In the above code snippet, the form is set to use the POST method to send the data to the "process_data.php" file. This ensures that sensitive information like the username and password is not visible in the URL.

Keywords

GET POST methods data passing URLs

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