Comparison Of Dot Net, J2EE, PHP

A team of 2 developers rebuilt the “Sun Microsystems' Java Pet Store J2EE Blue Print Application” using .Net in 4 weeks with 25% of the code. When tested in a lab, the .Net application ran %1000 faster than a tuned version of the Java application.
The same Pet Store application was rebuilt by both Microsoft and Sun for an independent competition sponsored by The Middleware Company.
Below is a comparison of the results:

	.Net 1.1	J2EE
Lines of Code	2,096	14,004
Time required for tuning and optimization prior to performance test	2 man-weeks	10 man-weeks
Price/Performance Ratio – the cost per server divided by the maximum transactions per second the server could handle	$316 – in other words, for a Java application to handle the same amount of website traffic as a .Net application, an additional $989 would need to be spent on server hardware.	$1,305
Maximum Pages served per Second	1,400	600
Maximum Number of Concurrent Users	6,000	4,000
Maximum Number of Transactions per Second	117	59

In general, .Net brings the power of an enterprise application into the cost range f a small and medium sized business by reducing the lines of code required. This reduction in code results in decreased development time, expensive development staff, maintenance and overall cost, while delivering superior website performance.

Feature	.Net	Java	Cold Fusion MX	PHP
Compiled Code – Increases website speed (precompiled is the fastest)	Yes – both pre- compiled and dynamically compiled when a page is requested	Yes – both pre- compiled and dyn- amically compiled when a page is requested	Yes – dyn- amically compiled when a page is requested	No – a 3rd party accelerator can be used to increase performance but it is not installed on most shared hosting servers.
Scripted Language – results in poor website performance	No	No	Somewhat	Yes – a 3rd party accelerator can be used to increase performance but it is not installed on most shared hosting servers.
Object Oriented – Increases the ability for code reuse and provides enhanced features as well as reduced development time; since code is more reusable, results in fewer bugs that can be discovered by any client and fixed for everyone; encourages developers to write more maintainable code.	Yes	Yes	Somewhat	No
Supported Development Languages – easier to find developers	C++, C#, Visual Basic.NET, Jscript.NET, Python, Perl, Java (J#), COBOL, Eiffel, Delphi – 25 languages supported currently	Java	CFML and CF Script	PHP
Browser Specific HTML Rendering – different HTML is automatically sent to IE than to Netscape, reducing incompatibility issues	Yes	No	No	No
Open Source	No	Yes	Somewhat	Yes

Reference from Wikipedia:

Comparison of web application frameworks