Learning php for future project manager

Here is a list of a few well-known RIA technologies:
HTML5 + CSS3 + JavaScript + JavaScript frameworks
o jQuery
o jQuery Mobile
o AngularJS
o Sencha EXT-JS
o SmartClient
o D3
o Dart
GWT (Google Web Toolkit)
JavaFX
Flex (Flash)
Silverlight (now unsupported)
My perception is that the world is moving towards HTML5 + CSS3 + JavaScript RIA solutions, rather than Flex and JavaFX. Microsoft has already shut down development of their Silverlight, and I suspect that JavaFX and perhaps even Flex will go the same way in the future. But that is just speculation.
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