涵盖了js,css,html,mysql,php等等的Cheet Sheet，做的很漂亮，关键是实用，特此收录一下。
原文如下：
http://www.petefreitag.com/item/455.cfm
Lets face it, unless you have a photographic memory, no developer can remember all the different functions, options, tags, etc. that exist. Documentation can be cumbersome at times, thats why I like cheat sheets. They are quick references that feature the most commonly forgotten things on a specific topic. You can print them out and hang them on your wall, or just keep them handy in your bookmarks for quick reference.
I have rounded up over 30 cheatsheets that developers might find useful.
Am I missing any good ones? Feel free to post any others in the comments.
Updates:
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