ocicolumnisnull
    (PHP 3>= 3.0.4, PHP 4 )
ocicolumnisnull -- Test whether a result column is 
NULLDescription
bool 
ocicolumnisnull ( resource stmt, mixed col)
     ocicolumnisnull() returns TRUE if the returned
     column column in the result from the
     statement stmt is NULL. You can either use
   	 the column-number (1-Based) or the column-name, in uppercase, for the
	    col parameter.