php - Warning: mysqli_select_db() expects exactly 2 parameters, 1 given

Question

I'm doing a tutorial in which the author has not updated his content to reflect changes in the PHP documentation. Anyways, I need to know what is parameter is being asked of me to provide. I've checked that all things are in order, but I literally don't know what I'm supposed to provide. Here's what I have:

Connects.php

<?php
$connect_error = 'Sorry, we're experiencing connection issues.';
$con = mysqli_connect('localhost', 'root', 'PwdSQL5');
mysqli_select_db('phpcadet') or die($connect_error);
?>

And yet I get the error:

Warning: mysqli_select_db() expects exactly 2 parameters, 1 given in C:...

Answer 1

mysqli_select_db() should have 2 parameters, the connection link and the database name -

mysqli_select_db($con, 'phpcadet') or die(mysqli_error($con));

Using mysqli_error in the die statement will tell you exactly what is wrong as opposed to a generic error message.