Parsing the IE invalid standard 'filter' about php-css-parser HOT 5 CLOSED

You are right. This is definitely a feature to be considered. The problem is that it’s actually in the CSS specification how to parse invalid CSS while this particular parser only guarantees to parse valid CSS.

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jQuery UI uses a number of filter:alpha(opacity=0.7) style rules so that is a lower hanging fruit to target.

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jQuery UI only produces filter:alpha(opacity=0.7) styles (as inline styles), it does not require the CSS file to contain those styles.

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Themes I've made with the ThemeRoller use the filters. E.g. .ui-helper-zfix, .ui-widget-overlay and a few others.

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I think support for filter: alpha(opacity=xyz); is good enough, we don’t need to support filter:progid:DXImageTransform.Microsoft.AlphaImageLoader(src="overlay.png",sizingMethod="scale")}.

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