Suddenly my sql requests do not work

[gpavlidis]

Everything was ok until suddenly most of the times I needed data from my database I get error. My connection to database every time is fine. But this $result=mysqli_query($conn,$sql) returns flase. As I said database connection is fine but sudden;y the $sql must not working. I tested the exact same files in localhost xampp and everything it is ok. It seems like it is not coding problem and I wonder if it is servers? Something temporary.

[Infinity]

Seems fine here if failing still try making a brand new database.
Test your connection using PDO -

How to Connect to Database Using PHP

Introduction You can create databases on 000webhost.com and PHP can be used to connect to those databases. This tutorial explains three different methods how that could be achieved. Most of the websites need to have at least one database and if you are developing a website from the beginning you will have to connect it to a database manually, here you can find how that could be done step by step. What you’ll need Before you begin this guide you’ll need the following: Understanding of PHP synt…

[apier]

Same problem. Also, status.000webhost.com shows DB is down.

[Infinity]

Then it is down

Simply wait and check back tomorrow