What are the best practices for using JOIN commands to work with data from multiple tables in PHP?

When working with data from multiple tables in PHP, it is best practice to use JOIN commands to efficiently retrieve related data. By using JOIN commands, you can combine data from different tables based on a common column, avoiding the need to make multiple queries. This can improve performance and simplify your code. 

// Example of using JOIN commands to retrieve data from multiple tables
$query = "SELECT users.name, orders.product
          FROM users
          JOIN orders ON users.id = orders.user_id";
$result = mysqli_query($connection, $query);

if(mysqli_num_rows($result) > 0) {
    while($row = mysqli_fetch_assoc($result)) {
        echo "User: " . $row['name'] . " ordered: " . $row['product'] . "<br>";
    }
} else {
    echo "No results found.";
}

Keywords

JOIN SQL database tables data manipulation

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