PHP5 being faster than PHP4 is greatly dependent on what features you use. I've consistently found PHP4 to be faster for my purposes also. Cheers, Rob. On Fri, 2007-08-24 at 11:38 -0400, Nathan Nobbe wrote: > what are the changes that supposedly make php5 faster than php4? > > when java went from the 1.4 series to the 5 series it became much faster. > this is because of enhancements to the jitter mechanism for sure. i dont > know what else they changed, but i know that had a great impact on the > performance. > > php5 passes objects around by reference automatically, whereas in php4 > if you do not specifically assign references using the > =& > construct a copy will be created. i suspect if your test included a > scenario > where the =& mechanism was not used in php4, it would not be as fast as > the php5 counterpart, simply because more memory would be consumed. > indeed i suspect there is plenty of php4 code where people have forgotten > to assign object references using =&. > > -nathan > > On 8/24/07, Steve Brown <sbrown25@xxxxxxxxx> wrote: > > > > Recently, I've been doing a lot of benchmarking with Apache to compare > > different OSes and platforms. I did a stock install of Ubuntu 7.04 > > Server w/ Apache2 and PHP5. To do the test, I used ab to fetch the > > following document: > > > > <html> > > <head> > > <title>PHP Web Server Test</title> > > </head> > > <body> > > <?php phpinfo(); ?> > > </body> > > </html> > > > > I ran ab in a loop 12 times with 10,000 connections and a concurrency > > of 10. Then I threw out the highest result and the lowest result and > > averaged the remaining values. Both PHP4 (v 4.4.7) and PHP5 (v > > 5.2.3) were built as Apache modules, and I simply changed Apache's > > config file to swap modules. > > > > The results were somewhat surprising to me: on average, PHP4 > > significantly outperformed PHP5. Over our LAN PHP5 handled roughly > > 1,200 requests / sec while PHP4 handled over 1,800 requests / sec. > > Since everything I have heard/read is that PHP5 is much faster than > > PHP4, I expected the opposite to be true, but the numbers are what > > they are. Also PHP on Apache1 was much faster than on Apache2. > > > > The only difference I can figure is that PHP5 was the packaged version > > that comes with Ubuntu and I had to compile PHP4 from source since > > there is no package for it in Feisty. But I wouldn't expect a 50% > > increase as a result of that. Any thoughts on this? > > > > -- > > PHP General Mailing List (http://www.php.net/) > > To unsubscribe, visit: http://www.php.net/unsub.php > > > > -- ........................................................... SwarmBuy.com - http://www.swarmbuy.com Leveraging the buying power of the masses! ........................................................... -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
