I’ve created a mandelbrot in php but the mandelbrot is looking a bit strange.

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Asked: June 15, 20262026-06-15T12:09:43+00:00 2026-06-15T12:09:43+00:00

I’ve created a mandelbrot in php but the mandelbrot is looking a bit strange.

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I’ve created a mandelbrot in php but the mandelbrot is looking a bit strange. How can I improve it?
enter image description here

You can find a live example here: http://www.phpdevpad.de/index.php?id=190.

Update: Mandelbrot-Zoom with 900 iterations:

enter image description here

Update: I use this method of computing the mandelbrot:

double Re_factor = (MaxRe-MinRe)/(ImageWidth-1);
double Im_factor = (MaxIm-MinIm)/(ImageHeight-1);

double newMinRe = MinRe + (Re_factor* x1);
double newMaxRe = MinRe + (Re_factor* x2);
double newMinIm = MinIm + (Im_factor* y1);
double newMaxIm = MinIm + (Im_factor* y2);

// and then I compute c - real and c- imag values

  for(unsigned y=0; y<ImageHeight; ++y) 
{ 
  double c_im = newMinIm - y*Im_factor;
  for(unsigned x=0; x<ImageWidth; ++x)
    {
      double c_re = newMinRe + x*Re_factor;

      // ComputeMandelbrot();

     }

 }