textdomain
    (PHP 3 >= 3.0.7, PHP 4, PHP 5)
textdomain -- Sets the default domain
Description
string 
textdomain ( string text_domain )
     This function sets the domain to search within when calls are
     made to gettext(), usually the named after an
     application.
    
Parameters
   
- text_domain
 
       The new message domain, or NULL to get the current setting without
       changing it
      
 
  Return Values
   If successful, this function returns the current message
   domain, after possibly changing it.