Question

I include many pages inside each other in my project, I face problem of incorrect paths inside the include, is there any way to include the file from the root,
I try to make like this

require_once("$_SERVER['DOCUMENT_ROOT']/crm/includes/opendb.php");
require_once("./includes/opendb.php");
require_once("../includes/opendb.php");
require_once("includes/opendb.php");

and all makes error in includeing the file, any suggestion plz?

Edit

I have 2 folders, controllers and includes, inside the controller I call opendb.php from includes folder, I make as demonstrated in an answer below

set_include_path('../includes/');
include 'opendb.php';

and

set_include_path('includes/');
include 'opendb.php';

but the same error

Warning: include(opendb.php) [function.include]: failed to open stream: No such file or directory in C:\AppServ\www\crm\controllers\Customer.controller.php on line 

Answer 1

"$_SERVER['DOCUMENT_ROOT']/crm/includes/opendb.php" is incorrect: you can’t use apostrophes around array keys inside double quotes. Try one of these:

require_once( $_SERVER['DOCUMENT_ROOT']."/crm/includes/opendb.php" );
require_once( "$_SERVER[DOCUMENT_ROOT]/crm/includes/opendb.php" );
require_once( "{$_SERVER['DOCUMENT_ROOT']}/crm/includes/opendb.php" );