html - Writing PHP in <head> -


is valid store php variables/values inside <head> tag? there disadvantages or advantages writing php html in format? matter?

i sampled following code direct input through w3c validator:

<!doctype html>  <html> <head>   <title>php head test</title>   <?php $data; ?> </head> </html>

and 1 error:

line 5, column 4: saw <?. probable cause: attempt use xml processing instruction in html. (xml processing instructions not supported in html.) <?php $data; ?>

but i'm guessing that's because it's validating .html file has php code in it.

i planning use php store preprocessed mysql data variable use in javascript. <head> proper place store these values?

note: not trying print out data in head, silly. asking storing preprocessed data mysql php (to used in javascript) in <head>.

no, storing php variables in head not proper way it. in fact, when this, variables not stored inside head, php server side, html/css/javascript client side.

you want store variables before there html outputted.

however, if : 

<head>     <title>php head test</title>     <?php $data; ?> </head>

it's not doing anything, if wanted display it, use echo. code absolutely nothing except declare $data if wasn't declared before-hand.

generally, should have of php code out of html file, should in different files , php code should include html file. in case, php code put in html file have access php variables available in file included.


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