Using PHP to make an image map

[Dark_Storm]

Hey, all. I was wondering if any of you knew how to use PHP to make an Image Map. I could use JavaScript I suppose, but what I really need is PHP to grab a value out of the database, and if it is equal to something then turn a certain section of the image into a different color.
And while u r reading this, do u know how to use a PHP multidimensional array in Javascript? Can the two languages read each other's values, or how do I translate them?

thx

[ednark]

ok
1) an html image map does not change its color, it assignes a portion of the image as a link

you can use the gd [man]image[/man] libararies from php to alter an image to perhaps do what you want..

you would make php return binary data instead of html, and could activate it like this

<img src="script_that_makes_image.php?image=Dark_storm.php&highlight=yes" />

2) php and javascript do not 'talk', php can write html, and javascript lives in html, to php can write javascript also, if you have an array in php you can write out each item of the array that is valid javascript, then when the page is sent.. so in a sense php has talked to javascript...

javascript can manipulate form values before being sent, one they are sent php will read them, so then in a sense javascript has talked to php...

but neither of them talk directly during execution of a script...

[Dark_Storm]

lol, i know what an image map is yea. Sorry, i wasn't clear enough. I can make an image map, but what I want is to use the same values I use to make the image map (the coordinates) in PHP to make those areas a certain color, depending on data in the database.
A while back I found the function imagefilledpolygon() that might be able to do what i wanted. But I didn't really know how to use it, and my host didn't have the GD library installed.

And thx for the help with Javascript and PHP, it was helpful, I think I have figured out how I am gonna tackle my problem with that.

[ednark]

thats ok, but would you post your solution back to the board to someone doing a search on this later can see what your solution is?

[addendum]
i'd like to see how you do it also

[Dark_Storm]

Lol, yea I meant that I found it, but didn't know how to use it. But I will try it I guess, just like put down some code and mess with it till i figure out how to actually do it.