In PHP, what are the differences between using header() and meta refresh for page redirection after form submission?

When redirecting a user after form submission in PHP, using the header() function is the preferred method as it sends an HTTP header to the browser, instructing it to redirect to a new page. This method is more efficient and reliable compared to using the meta refresh tag in HTML, which relies on the browser to perform the redirection.

// Using header() function for page redirection after form submission
header("Location: newpage.php");
exit();