breaks with css3 and some newer semantics about php-css-parser HOT 3 CLOSED

None of this is valid CSS3. The asterisk is a hack to hide the rule from newer browsers and the filter property is IE-only and also deprecated as of IE 9. These rules should be put in an old-IE-only stylesheet which can be included in conditional comments. Using hacks like these is very discouraged as it triggers lenient CSS parsing in browsers and I will not be modifying PHP-CSS-Parser to accommodate these.

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that still doesnt help. the script should not abort but ignore those (or remove or whatever). its currently totally useless because every one of those 20 css files I tried failed just because some special tricks are not handled gracefully. :(
and pretty much every common css library out there has some of them in their css.

from php-css-parser.

Then by all means, fork the repository and create your lenient parser. It’s just not a use case I’ve ever come across and I’m not willing to maintain this much code that I’m never going to use.

from php-css-parser.