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I just started php, its kinda harder than the other language i'va learn so far. Here is some question i need help with.

 

1. How exactly do a php get values entered in another php file? Example?

2. How to get values from the database and display them in a php? I mean how does the query works?

3. I made a page, with a listbox for a logged in user to change the background color. What should i do to make the changes apply to all the other pages?

4. Base on 3rd question, lets say i choose red as background color and the original bg color is white. Next time i log in, how to make the bg color red instead of white? With a query?

 

That's all i can think of for now. Thanks in advance.  :)

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