How to pass the value from CSS style variable to a php variable ?

[mshen]

Hi,

I write a code like this,

<style type="text/css">
<!--
#PageTitleDisplay { border: black 1px solid; position:relative; width:36px; height:10px; z-index:1; visibility:visible; background-color:#333333; layer-background-color:#333333; }
//-->
</style>
<div id="PageTitleDisplay"><img src="/images/shim.gif" width="36" height="16" border="0"></div>

The background-color in #PageTitleDisplay can be change with other popup color_picker page with javascript code.
the problem is here.I want to pass the value of background-color in #PageTitleDisplay to a php varible
and save the value to mysql database.I update the database when the background-color is changed.

but I do not how to pass the value from CSS style variable to a php variable now

for example the format maybe like this code.

<?php
$page_color=document.PageTitleDisplay.background-color;

?>

but the format like document.PageTitleDisplay.background-color only can used in javascript block.
I do not know how to include javascript block(<script language="javascript"> ..; </script>) to php block
(<?php ... ; ?>).

please help me and let me know how to pass the value from CSS style variable to a php variable.

Thanks a lot.

[the_Igel]

The only way is to send it in http request. You can't access DOM with PHP, as a page doesn't exist yet 🙂

So, when you select a color, you submit a form, sending it. The script accepts the variable containing selected color, and does with it whatever you need.

Clear enough?

[mshen]

do you mean php can not get the variable from javascript or css?thanks

[the_Igel]

Yes. To be more precise, PHP can't get any information from javascript that is executed in the page that the php script inquestion generates. But of course it can work with variables sent in URL line or via POST, whether they were generated by javascript or not.

[mshen]

I am clear now.Thanks