Zikula Community

• **unknown user**
  
  

  • Rank: Registered User
  • Registered: Mar 16, 2002
  • Last visit: Mar 31, 2005
  • Posts: 2

  Posted: Mar 25, 2005 - 01:26 AM

  Hi,
  
  I was looking through the PN code and found the following which doesn't quite seem right: in pnAPI.php the following function is defined:
  
  

  Code

  function &pnDBGetTables()

  
  
  The in (for example) pnMod.php (and other places) this function is typically invoked like this:
  
  

  Code

  $pntable =& pnDBGetTables();

  
  
  So the declaration of the function defines that a reference is returned from said function. Then when you're actually using the function, you're again explicitly assigning a reference to the resulting variable. It seems that one of the '&' (reference operators) is superflous here: either you define it at the function declaration or you use it in the invocation/assignment statement.
  
  What is the correct way of doing this? Am I misunderstanding something here?
  
  Thanks
  Lobita

  • 
  •  
• **unknown user**
  
  

  • Rank: Registered User
  • Registered: Mar 16, 2002
  • Last visit: Mar 31, 2005
  • Posts: 2

  Posted: Mar 29, 2005 - 02:29 AM

  Anybody know the definitive answer to this?
  
  Thanks

  • 
  •  
• alexan
  
  

  • Rank: Freshman
  • Registered: Nov 29, 2004
  • Last visit: May 28, 2009
  • Posts: 69

  Posted: Mar 29, 2005 - 04:35 AM

  It is correct read this:
  
  http://us3.php.net/manual/en/language.references.return.php
  
  this is the way PHP passes references from a function …
  without the '&' it would assign a copy of the returned variable...
  
  by the way this is not C++ .... all variables are in a symbol table
  no memory addresses are used directly
  
  Alexan

  • 
  •  
•  
•  

Users on-line

• 0 users

This list is based on users active over the last 60 minutes.