Php7.1 Warning: Declaration of db::query($sQuery = '') should be compatible with mysqli::query($query, $resultmode = NULL)

Php7.1 Warning: Declaration of db::query($sQuery = '') should be compatible with mysqli::query($query, $resultmode = NULL) in /usr/local/ispconfig/server/lib/classes/db_mysql.inc.php

The above error has been reported at least twice for php7.1 in the forum (here and there).

They are both using php7.1 for ISPConfig "unknowingly" when the error was found but those who are testing php7.1 for ISPConfig may have already noticed this earlier.

I am testing a fix since I am also testing ISPConfig with php7.1 which is basically replacing all occurrences (11 altogether) of ($sQuery ='') to ($sQuery, $resultmode = MYSQLI_STORE_RESULT) in the said db_mysql.inc.php file. So far it manages to resolve the above issue but I am not so sure whether it won't cause others.

The modified file of db_mysql.inc.php is attached for reference and testing.

Do try and report as well.

Signed Ahmad Rasyid Ismail "ahrasis" ahrasis-at-gmail.com