Login system i have problem

#1

hi i was upload my login system in my website

https://2018sys.000webhostapp.com/prac7/signup.php?signup=empty

when I fill this form didn’t send data to db

and this is the db file

indent preformatted text by 4 spaces
<?php $dbServername="localhost:3306"; $dbUsername="id6342870_mema2018"; $dbPassword="123456Mm"; $dbName="id6342870_loginsystem"; $conn=mysqli_connect($dbServername,$dbUsername,$dbPassword,$dbName); plz help me i do it many times
#2

What errors do you encounter?

#3

My problem when i fil the login form
Doesn’t send it to my data base