I just found this great tool and I thought I’d share it, it compares performance and memory usage in any two programming languages, it has a good list of languages too.
For example, this is the comparison between PHP and C:
http://shootout.alioth.debian.org/gp4/benchmark.php?test=all&lang=gcc&lang2=php
PHP vs Python:
http://shootout.alioth.debian.org/gp4/benchmark.php?test=all&lang=python&lang2=php
Python vs Ruby:
http://shootout.alioth.debian.org/gp4/benchmark.php?test=all&lang=python&lang2=ruby
C vs Java:
http://shootout.alioth.debian.org/gp4/benchmark.php?test=all&lang=gcc&lang2=java
And finally C vs C++:
http://shootout.alioth.debian.org/gp4/benchmark.php?test=all&lang=gcc&lang2=gpp

I'm a programmer at 
> I just found…
Now find your way to the homepage
http://shootout.alioth.debian.org/
and notice that the up- to-date measurements are being made on a quadcore Q6600
- x86 programs bound to a single core
- x86 programs enabled for quad core
- x64 programs bound to a single core
- x64 programs enabled for quad core
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Hey, thanks for the comment, this is fun
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