Update: readme.md

Author: dave83649

README.md

@@ -27,7 +27,11 @@ Of course, performance is also a concern, you don't want to slow down the sites
 
 We performed a test against the firewall engine and supplied it with 100 firewall rules. Of course, in no realistic scenario would a site have to process that many firewall rules, but it gives you an idea on what the performance impact might be.
 
-Process time: 0.0013 seconds, or about 1.3 millisecond
+Process time:
+PHP 5.6: 0.0020, or about 2 milliseconds
+PHP 7.3: 0.0013 seconds, or about 1.3 milliseconds
+PHP 7.4: 0.00017 seconds, or about 0.17 milliseconds
+PHP 8+: 0.00011 seconds, or about 0.11 milliseconds
 
 These numbers are subject to change slightly as we are still making optimizations and adjustments. However, compared to the previous PHP code-based firewall rules, it's 10 times faster.