06-26-2009, 07:06 AM
|
#1 (permalink)
|
|
Meeow!
Join Date: 04-13-07
Location: Romania
Posts: 3,235
Latest Blog:
None
|
any way of filtering $GLOBALS ?
I'm working on a big project I can't give you too much details about this right now, sorry, but I need a way of filtering the $GLOBALS variable.
The current architecture is a template based one so I need a way to extract only some of the global variables into some of my scripts.
Although it might seem easy I really have a big problem in getting it to work(maybe I have too much on my head right now and I obviously can't think clearly enough) so I need some help.
Description:
I have a php file, let's call it < main.php > which will hold some of the configuration settings and import some other scripts as well. Basically this would be the website's main file. It might look like this:
PHP Code:
<?php
// main.php
// Globals
$server = '';
$db = '';
$user = '';
$password = '';
$cs = array( 'server' => $server, 'db' => $db /* etc */);
$sql = new MySqlWrapper();
require 'lang.php';
$lang = array(
'welcome_msg' => 'Welcome to our website!'
,'home_page_title' => 'Welcome!'
);
require 'tpl.php';
$tpl = new TemplateClass()
require 'other_class.php';
$class = new OtherClass();
/* etc ... */
?>
Then I need to access some of these variables in other external pages, an example would be the < functions.php > file that will be included in some of the website's pages:
PHP Code:
<?php
// functions.php
$tpl->set_var('welcome_msg', $lang['welcome_msg']);
$tpl->set_var('home_page_title', $lang['home_page_title']);
// ^^ breaks the script. $tpl and $lang variables are not visible on this page
// an alternative would be extract(GLOBALS); but that would bring on ALL globals here and I don't need them all
?>
And finally, an external page would look something like this:
Code:
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
<title>{home_page_title}</title>
</head>
<body>
<h1>{welcome_msg}</h1>
</body>
</html>
Now, my problem is accessing the global variables set in main.php file in the functions.php file, so I need to filter the $GLOBALS variable and I tried a few tricks but I couldn't get what I wanted.
The point of this is that the $GLOBALS variable is holding everything so I need to have the function exclude_globals() to filter them out,
PHP Code:
/**
* Filter $GLOBALS
*
* @param string|array $exclude The variable or the array of variables to exclude
* @return array
*/
function exclude_globals( $exclude = NULL )
{
# Will hold the $GLOBALS filtered
$new = array();
# the default list of variables to exclude from $GLOBALS
$default_excludes = array('_POST', '_GET', '_COOKIE', '_FILES', '_SESSION', '_SERVER');
if (is_array($exclude))
{
$excludes = array_merge($default_excludes, $exclude);
}
else {
array_push($default_excludes, $exclude);
}
// TODO:
//....
return $new;
}
function that I would call in my functions.php file
PHP Code:
<?php
// functions.php
$globals = exclude_globals();
extract($globals);
$tpl->set_var('welcome_msg', $lang['welcome_msg']);
$tpl->set_var('home_page_title', $lang['home_page_title']);
?>
and give me access to the global variables set in the other included files.
Can anyone help?
__________________
...to be continued
|
|
|