What is the difference between PHP 7.4 and 8 ? A: One of the many examples is, WordPress on PHP 8.0 can handle 18.4% more requests per second than PHP 7.4. Moreover, Laravel on PHP 8.0 can run 8.5% more requests per second than PHP 7.3. In the event that your site or application is completely congruent with PHP 8.0.