PHP Version: 5
Apache Version: 2.2
Operating System: Windows 2003 Server

I was trying to set the following in php:
extension php_ldap.dll

And i was getting the following error on the apache error log
ERROR:
Unable to load dynamic library 'c:\\php\\ext\\ php_ldap.dll' - The operating system cannot run %1.\r\n in Unknown on line 0

Solution:
--- Added "c:\php\ext "...