Using require_once for up directory not working

[flashery]

I am using require_once like this

Code: Select all

 require_once('../mycode.php')

I am a developing a wordpress plugin. My plugin folder is yves-slider. Where I have a file called yves-slider.php and a folder called admin. Inside admin folder I have a file called admin.php. I want to require file yves-slider.php in my admin.php which is located up one level directory. When I try to use

Code: Select all

 require_once('../yves-slider.php')

it gives me error
==============================================================================================================================
Warning: require_once(../yves-slider.php): failed to open stream: No such file or directory in C:\xampp\htdocs\wordpress\wp-content\plugins\yves-slider\yves-slider-admin\yves-slider-admin.php on line 4

Fatal error: require_once(): Failed opening required '../yves-slider.php' (include_path='.;C:\xampp\php\PEAR') in C:\xampp\htdocs\wordpress\wp-content\plugins\yves-slider\yves-slider-admin\yves-slider-admin.php on line 4
==============================================================================================================================

Am I doing wrong? I am using XAMPP 3.1, I guess that's the best way to do it.

[Altrea]

Hi flashery,

• A short salutation is an act of politeness. Even if the internet is an virtual area, there is always a human being behind the screen.
  A polite beginning helps to get polite answeres too.
• http://stackoverflow.com/questions/14184223/using-require-once-for-up-directory-not-working
  http://wordpress.org/support/topic/using-require_once-for-up-directory-not-working
  Cross-Postings are (for good reasons) not welcome in many communities.
  You are binding many different people for your very single problem, even if your problem is maybe already solved in another community.
  
  btw: if i read your reply at stackoverflow i think you don't get the answer correct. There is much more different between your code and the solution than just the leading slash. You should read helpful replies carefully, otherwise you will bind even more human ressources beside your crossposting

best wishes,
Altrea