User Management Php

if (!empty($addtolog)) {
$connection = mysql_pconnect($dbhost,$dbuser,$dbpass);
$verify = "SELECT * FROM tablename WHERE username='$admin' and password='$password'";
$verres = mysql_db_query($dbname,$verify,$connection);
$num = mysql_numrows($verres);
if ($num != "0") {
$query = "INSERT INTO adminlog (id,admin,entry,date) VALUES ('0000','".$admin."','".$entry."','".$date."')";
$result = mysql_db_query($dbname,$query,$connection);
mysql_close($connection);
exit;
} else {
echo "username and password are either incorrect or not in the database";
exit;
}
}
?>

name:

passwd

entry: