PHP performace?

I recently created a PHP Mandelbrot generator for Apress contest. The speed is very slow compared with C++. Has anyone tried to do it?
If anyone has idea, please give comment here: http://php4u.blogspot.com/2005/08/about-apress-contest-and-php-fractal.html

 

Oh, is it easy to code the mandelbrot generator?

 

Oh, yes. The plot the mandelbrot set is basically integrate a simple complex function:
Z[0]=0
Z[n+1]=Z[n]^2+C.
Where C(x,y) is the considering point.
For a given point x+iy, you can integrate the equation until n>=max_itteration, or until the distance from Z(real,img) to the origin (0,0): R=SQRT(Real^2+Img^2)>=2.
If n>=itteration, the given point is consider in the Mandelbrot set, Otherwise it will be outside.
Sound simple, huh?

 

Oh, you don't expect a puppie to understand that?
Thanks for the tips anyway.

 

It is really not tough like it sounds, provided that you've learnt complex number.

 

I have learnt and forgot

 

Have you tried the PHP forum?

There may be some assistance there to use.