PHP Code:

$var = "<?php ...php codes here retrieved from database... ?>";
$how_can_I_use_$var_here_as_a_php_code?;

We are able to include a file within the php codes in a php code area. My question is:
"is it possible to use php codes stored in a database in a php area?"

It most certainly is, you've got to evaluate it with the eval function, but you can't use the <?php tag.

For example:

PHP Code:

eval('echo "test";'); 


Would print test to screen, while

PHP Code:

eval('<?php echo "test"; ?>');

would give an error.

If you really want to use html in your code however, you can do seomthing like this:

PHP Code:

eval('....php code; ?><p>I\'m a php paragraph!</p><?php ...some more php;');

For more info: http://php.net/eval

thanks for your quick answer,
the function 'eval(..)' is what I was looking for..