What are the advantages of using MySQL calculations instead of PHP calculations for data validation in PHP scripts?

Using MySQL calculations for data validation in PHP scripts can offer several advantages over using PHP calculations. One advantage is that MySQL calculations can be more efficient and optimized for handling large datasets. Additionally, using MySQL calculations can offload some of the processing work from the PHP server, leading to better performance. Lastly, MySQL calculations can leverage the built-in functions and capabilities of the database system, making it easier to perform complex calculations and validations.

// Example of using MySQL calculations for data validation in PHP scripts

// Connect to MySQL database
$mysqli = new mysqli("localhost", "username", "password", "database");

// Input data to validate
$input_data = 10;

// Query to check if input data is valid
$query = "SELECT COUNT(*) FROM table_name WHERE column_name = $input_data";

// Execute query
$result = $mysqli->query($query);

// Check if input data is valid
if ($result->fetch_row()[0] > 0) {
    echo "Input data is valid!";
} else {
    echo "Input data is invalid!";
}

// Close database connection
$mysqli->close();