$mysql_host = "";
$mysql_database = "";
$mysql_user = "";
$mysql_password = "";
make sure hizi settings umezijaza vizuri.
Sasa myql database yako yiko local? i.e on developing machine(localhost)(kama Xampp)
au una tumia webhost>>>>"mysql16.000webhost.com".
Kama webhost make sure they they allow remote mysql connections(TIP:MOST DONT...u need to use ssh tunneling)
Otherwise tuonyeshe connection ERROR then tuta follow up..🙂