In PHP, what are some best practices for handling and processing data obtained from external sources, such as parsing and storing temperature readings in a database?

When handling and processing data obtained from external sources, such as temperature readings, it is important to sanitize and validate the data to prevent SQL injection and other security vulnerabilities. Additionally, data should be properly parsed and formatted before storing it in a database to ensure consistency and accuracy. 

// Assuming $temperatureReading is the data obtained from the external source

// Sanitize and validate the temperature reading
$temperatureReading = filter_var($temperatureReading, FILTER_SANITIZE_NUMBER_FLOAT);

// Connect to the database
$connection = new mysqli($servername, $username, $password, $dbname);

// Prepare and execute SQL query to store temperature reading
$stmt = $connection->prepare("INSERT INTO temperature_readings (reading) VALUES (?)");
$stmt->bind_param("d", $temperatureReading);
$stmt->execute();

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

Keywords

data validation SQL injection prevention PDO prepared statements JSON parsing error handling

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