php require() does not work with relative or full

Question

I have a weird problem with the require() command, it does not work at all and gives me a weird error.. yes i am 100% sure i put the right path i tried using both relative and full paths, as well as using include() , include_once() , require() , require_once() but to no avail.. I tested the file's existence and it does exist.. it is making no sense to me! I haven't seen anyone else having the same problem as this on forum, I also tried using global variables like $_SERVER["DOCUMENT_ROOT"] and other paths but this still doesn't work for me.

The procedure is: HTML button -> ajax calls "addcomments.php" -> page requires "ajax.php"-> error

addcomments.php page:

//set path
$path = "g:/appserv/www/y4project/scripts/php/funcs/";

//check directory 
print_r(scandir($path));

//check if php file exists
if(file_exists($path."ajax.php"))
    echo "######### IT EXISTS!!! ##########";
else echo "@@@@@@ NO! @@@@@@@@";

//require it
require($path."ajax.php");

The error:

Array ( 
    [0] => . 
    [1] => .. 
    [2] => account.php 
    [3] => ajax.php 
    [4] => main.php 
    [5] => service.php ) 

######### IT EXISTS!!! ##########

Warning: require(1) [function.require]: failed to open stream: No such file or directory in G:\AppServ\www\y4project\scripts\AJAX\addcomments.php on line 10

Fatal error: require() [function.require]: Failed opening required '1' (include_path='.;C:\php5\pear') in G:\AppServ\www\y4project\scripts\AJAX\addcomments.php on line 10

I also tried relative paths like "../php/funcs/ajax.php", same problem.. scandir() and file_exists() both find it but require() fails!

Your help is most appreciated!

EDIT

I just tested it to be sure, required it from a different test page and used a function and it worked, but still not working from the "addcomments.php" page which gets called by AJAX.

Another EDIT

I also checked the documentation for the PHP require_once() and require() , I still can't see the problem!

Could it be a path bug of some sort or a security measure where AJAX called scripts cannot call other scripts what so ever? but that makes no sense?
I did not read anything about that in the documentation either.
I even tried requiring HTML pages and still not working.

I'm lost..

Answer 1

您可以尝试使用这种方式：

require dirname(__DIR__) . "/php/funcs/ajax.php";