What are the advantages of using joins in database queries over manual array manipulation in PHP?

When working with relational databases, using joins in database queries is advantageous over manual array manipulation in PHP because it allows for more efficient and optimized data retrieval. Joins help reduce the amount of data transferred between the database and PHP, resulting in faster query execution and improved performance. Additionally, joins simplify the process of fetching related data from multiple tables by combining them in a single query, making the code more readable and maintainable. 

// Example of using joins in a SQL query to fetch related 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'] . ", Product: " . $row['product'] . "<br>";
    }
} else {
    echo "No results found";
}

Keywords

joins database queries array manipulation PHP advantages

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