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html - Issues with PHP and World Database: Error

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So I'm creating some PHP connected to the World database (https://dev.mysql.com/doc/index-other.html). I'm getting an error that says: Warning: mysqli::__construct(): (HY000/1045): Access denied for user ''@'localhost' (using password: NO) in C:\xampp\htdocs\assignment11\exercise2.php on line 12 Connection failed: Access denied for user ''@'localhost' (using password: NO)

This is for an assignment that said to:

Write a PHP script that uses the world database and shows all the countries stored in the country table and shows all the songs that include the string "island" in the Name field

I don't have any password set so I'm just a little confused. I'm using Visual Studio Code and Xampp (I have Apache and MySQL turned on in the Xampp Control Panel, I have tried to refresh the tab multiple times having just one module or the other on, still no luck). Any assistance would be great, thank you!

Here's the code:

<!DOCTYPE html>
<html>
<body>

<?php
$servername = "";
$username = "";
$password = "";
$dbname = "world";

$conn = new mysqli($servername, $username, $password, $dbname);

if ($conn->connect_error) {
die("Connection failed: " . $conn->connect_error);
}

$sql = "SELECT * FROM country";
$result = $conn->query($sql);

if ($result->num_rows > 0) {

while($row = $result->fetch_assoc()) {
echo "<br>". $row["Name"]. "<br>";
}
} else {
echo "0 results";
}

$conn->close();
?>

</body>
</html>


<!DOCTYPE html>
<html>
<body>

<?php
$servername = "";
$username = "";
$password = "";
$dbname = "world";

$conn = new mysqli($servername, $username, $password, $dbname);

if ($conn->connect_error) {
    die("Connection failed: " . $conn->connect_error);
}

$sql = "SELECT * FROM songs WHERE Name LIKE '%island%';";
$result = $conn->query($sql);

if ($result->num_rows > 0) {

    while($row = $result->fetch_assoc()) {
        echo "<br>". $row["Name"]. "<br>";
    }
} else {
    echo "0 results";
}

$conn->close();
?>

</body>
</html>

Undefined asked
2021-09-2
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Date the issue was resolved:
2021-09-2
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About the technologies asked in this question

PHP

PHP (from the English Hypertext Preprocessor - hypertext preprocessor) is a scripting programming language for developing web applications. Supported by most hosting providers, it is one of the most popular tools for creating dynamic websites. The PHP scripting language has gained wide popularity due to its processing speed, simplicity, cross-platform, functionality and distribution of source codes under its own license.
https://www.php.net/


MySQL

DBMS is a database management system. It is designed to change, search, add and delete information in the database. There are many DBMSs designed for similar purposes with different features. One of the most popular is MySQL. It is a software tool designed to work with relational SQL databases. It is easy to learn even for site owners who are not professional programmers or administrators. MySQL DBMS also allows you to export and import data, which is convenient when moving large amounts of information.
https://www.mysql.com/


HTML

HTML (English "hyper text markup language" - hypertext markup language) is a special markup language that is used to create sites on the Internet. Browsers understand html perfectly and can interpret it in an understandable way. In general, any page on the site is html-code, which the browser translates into a user-friendly form. By the way, the code of any page is available to everyone.
https://www.w3.org/html/



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