I would like to know if somebody knows a library where I can create an QR-Code and embedd my own image or logo in it.
Export should be EPS with YCMK.
I've found this one here http://code.google.com/p/zend-framework-matrixcode-module/ but don't really know if it could work with it...
Any clues?
I've written a QR generator in PHP which will output in PNG, JPG, or GIF.
I would suggest using ImageMagick to add the logo and convert to EPS.
Note - make sure you use the H (high) level of error correction. As Wandera Nauta says, that will give you 30% redundancy. A small central logo shouldn't "damage" the code too much. Make sure to avoid covering the three corner squares.
Here's an example code with an image in the middle.