How can PHP be used to create a file that redirects to another URL and displays that URL in an iframe within the same page?

To create a file that redirects to another URL and displays that URL in an iframe within the same page, you can use PHP to generate the HTML code for the iframe with the desired URL. You can create a PHP file that redirects to the desired URL using the header() function and then include the iframe code within the same file to display the redirected URL.

<?php
$redirect_url = "https://example.com";
header("Location: $redirect_url");
?>

<!DOCTYPE html>
<html>
<head>
    <title>Redirected Page</title>
</head>
<body>
    <iframe src="<?php echo $redirect_url; ?>" width="100%" height="500px"></iframe>
</body>
</html>