What are the best practices for handling checkbox values in PHP arrays?

When handling checkbox values in PHP arrays, it is important to ensure that the checkbox values are properly processed and stored in the array. One common approach is to use the isset() function to check if the checkbox value is set, and then assign a default value if it is not. Additionally, it is recommended to sanitize and validate the input data to prevent any security vulnerabilities.

// Example of handling checkbox values in PHP arrays
$checkbox_values = [];

// Check if the checkbox is checked and assign a default value
$checkbox_values['option1'] = isset($_POST['option1']) ? 1 : 0;
$checkbox_values['option2'] = isset($_POST['option2']) ? 1 : 0;

// Sanitize and validate the input data
$checkbox_values['option1'] = filter_var($checkbox_values['option1'], FILTER_VALIDATE_INT);
$checkbox_values['option2'] = filter_var($checkbox_values['option2'], FILTER_VALIDATE_INT);

// Now the checkbox values are stored in the $checkbox_values array