Having PHP/MySQL connection problems

[BigDotMedia]

Hi, 
Im coping my php code over from another host and im running into some issues.
I hope someone here can help me with.
I tried calling Godaddy phone support but he didnt understand what I was talking about.

So im trying to make a simple connection to mysql database which I have created on godaddy and uploaded the data. But the page displays this error when loaded.

Fatal error: Uncaught Error: Call to undefined function mysql_connect() in /home/{USERNAME}/public_html/index4.php:8 Stack trace: #0 {main} thrown in /home/{USERNAME}/public_html/index4.php on line 8

I replaced GD username with{ USERNAME} for security reasons.

I wrote this code myself and its working on 4 other hosting companies servers without any problems at all.

This is my code. I replaced my details with {REMOVED} but they are correct.

$DBhost = "localhost"; // Host name
$DBuser = "{REMOVED}"; // Database user name
$DBpass = "{REMOVED}"; // Database password
$DBname = "{REMOVED}"; // Database name

mysql_connect($DBhost,$DBuser,$DBpass) or die("Unable to connect to database"); // this is LINE 8
mysql_select_db ($DBname);

Any suggestions?
Is mysql off? how can i find out.
Thanks

-D

[PL281 · Accepted solution]

@BigDotMedia 

The issue is you are now running PHP 7.x which mysql_connect has been removed - You need to use mysqli_connect - https://www.php.net/manual/en/function.mysqli-connect.php

Very similar syntax

[BigDotMedia]

OMG, thanks. But now it seems I have to go though over 50,000 lines of code.
Oh dear.