Você procurou por: mysqli_connect_error (Inglês - Russo)

')' . mysqli_connect_error ());
die( 'connecterror:' . mysqli_connect_error ());

echo "failedtoconnecttomysql:" . mysqli_connect_error ();
echo "Неудалосьсоздатьтаблицу:(" . $mysqli -> errno . ")" . $mysqli -> error ;

fwrite ( $w , 'error:' . mysqli_connect_error ().
fwrite ( $w , 'error:' . mysqli_connect_error ().

printf ( "Неудалосьподключиться:%s\n" , mysqli_connect_error ());
printf ( "Неудалосьподключиться:%s\n" , mysqli_connect_error ());

printf ( "connect failed:%s\n" , mysqli_connect_error ());
printf ( "connect failed:%s\n" , mysqli_connect_error ());

mysqli_connect_error() - returns a string description of the last connect error
mysqli_error() - returns a string description of the last error

printf ( "can'tconnecttolocalhost.error:%s\n" , mysqli_connect_error ());
if( mysqli_connect_errno ()){ printf ( "connectfailed:%s\n" , mysqli_connect_error ());