BUG #2577: Notice: Only variable references should be retur..

The following bug has been logged online:

Bug reference:      2577
Logged by:          niktto
Email address:      niklaus@abv.bg
PostgreSQL version: 7-4-7
Operating system:   debian
Description:        Notice: Only variable references should be retur..
Details:

What is? :(

Notice: Only variable references should be returned by reference in
/usr/share/phppgadmin/classes/database/Postgres74.php on line 135

Notice: Only variable references should be returned by reference in
/usr/share/phppgadmin/classes/database/Postgres71.php on line 110

Notice: Only variable references should be returned by reference in
/usr/share/phppgadmin/classes/database/Postgres74.php on line 135

Notice: Only variable references should be returned by reference in
/usr/share/phppgadmin/classes/database/Postgres73.php on line 382

Notice: Only variables should be assigned by reference in
/usr/share/phppgadmin/browser.php on line 81


php4
apache2
debian 2.6

pls, pls hlp