Sure, here's a brief outline of the steps you'll need to follow to install and use the MySQLi extension in your PHP program:

1. Install MySQL and MySQLi:
If you haven't already installed MySQL and the MySQLi extension, you'll need to do so before you can use MySQLi in PHP. You can find detailed instructions for installing MySQL and the MySQLi extension on the official MySQL website.

2. Connect to the MySQL database:
Once you have MySQL and MySQLi installed, you can connect to your MySQL database using PHP. Here's an example of how to connect to a database named "mydata" using MySQLi:
``` 
<?php
$servername = "localhost";
$username = "Username";
$password = "mypassword";
$dbname = "mydata";

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

// Check connection
if ($conn->connect_error) {
    die("Connection failed: " . $conn->connect_error);
}
echo "Connected successfully";
?>
``` 
3. Query the database:
Once you're connected to the database, you can use MySQLi to query it. Here's an example of how to query a table named "mytable" in the "mydata" database using MySQLi:
``` 
<?php
$servername = "localhost";
$username = "Username";
$password = "mypassword";
$dbname = "mydata";

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

// Check connection
if ($conn->connect_error) {
    die("Connection failed: " . $conn->connect_error);
}
echo "Connected successfully";

// Query the database
$sql = "SELECT * FROM mytable";
$result = $conn->query($sql);

// Check if there are any results
if ($result->num_rows > 0) {
    // Output data of each row
    while($row = $result->fetch_assoc()) {
        echo "id: " . $row["id"]. " - Name: " . $row["name"]. " - Email: " . $row["email"]. "<br>";
    }
} else {
    echo "0 results";
}

$conn->close();
?>
``` 
This program will connect to the database named "mydata" using the username "Username" and the password "mypassword", and then query a table named "mytable" to retrieve all the rows and columns. The program will then output the results on the webpage.

Note that you will need to replace "mydata", "mytable", "Username", and "mypassword" with the appropriate values for your own MySQL database.
spam fails_task lang_mismatch pii not_appropriate hate_speech sexual_content quality toxicity humor helpfulness creativity violence