EPS file format isn't providing the right output

[Vischerkarpfen]

For our design department we created a QRCode generator in our CMS using Chillerlan/php-qrcode. We use PHP Version 7.4 with php-qrcode version 5.0.2. Now they were asking for the file format to be EPS, although it's an old file format and you could just use modern svg.

I used the example provided in Eps.php. The problem is that our design can't open the generated qrcode.eps file in either Adobe Illustrator and InDesign. We have some qrcodes from other generators in EPS file format so I opened both files in an editor to compare them. I noticed that the generated qrcode.eps file from chillerlan/php-qrcode just contains a few lines of xml / html syntax while the qrcodes generated from other files in .eps look more like an actual .eps file. Is there a reason and solution to this?
Below is the code of both .eps files on pastebin:

qrcode.eps (chillerlan):
https://pastebin.com/k1ne0tKB

qrcode.eps (qrcode Monkey):
https://pastebin.com/87M86KQT

[codemasher]

That is because the output isn't EPS but SVG, most likely because you're using an example from dev-main. See: https://github.com/chillerlan/php-qrcode?tab=readme-ov-file#documentation

[Vischerkarpfen]

@codemasher Hey there again! Could I may ask, if there is an option to exclude some modules from being drawn as the custom shape I defined? Currently I've overwritten the module() method to draw a rhombus-like shape and literally everything will be drawn like that. But I want to draw everything else (especially the finders and their dots) as usual squares.

[codemasher]

Hey, I think this is what you're looking for (see also #150):

php-qrcode/examples/svgWithLogoAndCustomShapes.php

Lines 66 to 76 in c954db6

	if(
	!$this->matrix->isDark($M_TYPE)
	// we're skipping the finder patterns here
	|| $this->matrix->checkType($x, $y, QRMatrix::M_FINDER)
	|| $this->matrix->checkType($x, $y, QRMatrix::M_FINDER_DOT)
	){
	return '';
	}
	// return a heart shape (or any custom shape for that matter)
	return sprintf('M%1$s %2$s m0.5,0.96 l-0.412,-0.412 a0.3 0.3 0 0 1 0.412,-0.435 a0.3 0.3 0 0 1 0.412,0.435Z', $x, $y);

[Vischerkarpfen]

My biggest respect and gratitude that you answer so fast. You seem very dedicated in this wonderful masterpiece of a library! Thank you for your answer! At the same time I have to apologize. I wasted your time, because before you answered I continued searching for an answer myself of course and found the exact same code you just referred to. ^^'
I'm a junior dev, completely new to php (3 months of experience in that language) coming from the C# world so please forgive me my unexperience.

But that leads me to another question. I just used that, but obviously now it's just skipping the finders and leaves them blank (white/not visible). I don't really understand where I can define them to be usual squares.

[codemasher]

Well we all started at some point haha. Glad to be of help - it's nothing really.

I don't really understand where I can define them to be usual squares.

You just take the bit above that checks for the finder patterns and put it into another if(...) and return the square blocks there.
Basically:

// light module (return empty)
if(!$this->drawLightModules && !$this->matrix->isDark($M_TYPE)){ 
    return ''; 
}

// determine position as in the EPS output class
// ...

// return square shape for the given types
if($this->matrix->checkType($x, $y, QRMatrix::M_FINDER) || $this->matrix->checkType($x, $y, QRMatrix::M_FINDER_DOT)){
    return sprintf('%d %d %d %d F', $outputX, $outputY, $this->scale, $this->scale);
}

// return custom shape
return '...';

[Vischerkarpfen]

Worked all like a hot knife is slicing butter! Thank you so much, I learned a looot today. :) Realized the same thing in png myself at least. To further continue learning myself, next step will be trying to do rounded corners except one for the finders without help.^^