how passing sequence name in postgresql using php statement?

[osman7king]

I'm using Zend framework for building my application,
when I need to get the next value of a sequence, the system doesn't respond.
I use this code:

public function nextSequenceId($sequenceName)
{
  $this->_connect();   
  $value = $this->fetchOne('SELECT '.new Zend_Db_Expr('nextval(\'"'.$sequenceName.'"\')'));
  return $value ;
}
 

note:
1- when I use the statement in pgadminIII:

  SELECT nextval('"SEQ_QUT_QUOTATION"')

the statement returns a rigth value.
2- all objects in my database have names in capital letters, so I can't access to them with out double quotes.


may any one help me to fix this issue?

THANKS.