Warning: mysqli_error() expects exactly 1 parameter, 0 given error

Question

I get the following error

Warning: mysqli_error() expects exactly 1 parameter, 0 given

The problem is with this line of the c

Answer 1

mysqli_error function requires $myConnection as parameters, that's why you get the warning

Answer 2

Change

die (mysqli_error()); 

to

die('Error: ' . mysqli_error($myConnection));

in the query

$query = mysqli_query($myConnection, $sqlCommand) or die (mysqli_error()); 

Answer 3

At first, the problem is because you did't put any parameter for mysqli_error. I can see that it has been solved based on the post here. Most probably, the next problem is cause by wrong file path for the included file.. .

Are you sure this code

$myConnection = mysqli_connect("$db_host","$db_username","$db_pass","$db_name") or die ("could not connect to mysql");

is in the 'scripts' folder and your main code file is on the same level as the script folder?

Answer 4

mysqli_error() needs you to pass the connection to the database as a parameter. Documentation here has some helpful examples:

http://php.net/manual/en/mysqli.error.php

Try altering your problem line like so and you should be in good shape:

$query = mysqli_query($myConnection, $sqlCommand) or die (mysqli_error($myConnection));