PHP MySQL没有从数据库中获取任何东西

Question

Trying to get all the users from my database, yet when I do so, the query fails.

Attempting to do so with

 $userNames = mysqli_query($con, "SELECT * FROM Login");

Where in PHPMyAdmin the database has a few records in the table login. I checked if the connection is connected, its connected.

Is there any reason this wouldn't work?

Here is a examplepage, you can try logging in with Username and Password.

EDIT: From the example page, here is the code used to test:

if (mysqli_connect_errno($con)) {
    echo "Failed to connect to MySQL: " . mysqli_connect_error() . "<br />";
} else {
    echo "Connected to MySQL!<br />";
}
if(mysqli_query($con, "SELECT * FROM Login")){
    echo "Query good!<br />";
} else {
    echo "Query bad!<br />";
}

EDIT 2: Here is a screenshot of the table existing, and the data existing:

Answer 1

I use this

$con = StartDatabase("localhost", "username", "password", "mydatabase");

function StartDatabase($dblocation, $dbuser, $dbpasswd, $dbname){
 $link = mysqli_connect($dblocation, $dbuser, $dbpasswd, $dbname);
  if (!$link) {
    die('Connect Error (' . mysqli_connect_errno() . ') '
        . mysqli_connect_error());
  }
 return $link;
}

if(mysqli_query($con, "SELECT * FROM Login")){
    echo "Query good!<br />";
} else {
    echo "Query bad!<br />";
}