It is very important to bear in mind that performance and running speed of the web scripting engine must be given TOP PRIORITY. That is, how many pages per second the scripting engine can pump out to the browser clients. The greater the number of pages pumped out to clients in a given period of time, then the better and more powerful the scripting engine is.
The Zdnet did a evaluation and benchmarking of 4 web scripting languages. During benchmarking, the same spec and identical cpu, memory boxes were used. Under identical conditions, it was found that PHP was the fastest - about 3.7 times faster than JSP and about 1.2 times faster than ASP. Read the report at eWeek and mirror-site The benchmark results are -
See also PHP, ASP benchmarks at http://aldev0.virtualave.net/php-perl-benchmarks.html
Whenever you design a web site, give attention to these important points: