What are the potential drawbacks of using the Meta-Tag for URL redirection in PHP?

Using the Meta-Tag for URL redirection in PHP can have potential drawbacks such as decreased SEO optimization, as search engines may not follow the redirection properly. Additionally, users with JavaScript disabled may not be redirected correctly. To solve this issue, it is recommended to use PHP header() function for URL redirection instead.

<?php
header("Location: http://www.example.com");
exit();
?>