How can PHP output be sent to the browser in a compressed format?

To send PHP output to the browser in a compressed format, you can make use of the PHP `ob_gzhandler` function. This function will compress the output buffer before sending it to the browser, reducing the size of the data being transferred and improving page load times.

<?php
ob_start('ob_gzhandler');
echo "This is some compressed output sent to the browser.";
?>