How can the isset() and in_array() functions be used effectively in PHP to handle checkbox selections?

When handling checkbox selections in PHP, the isset() function can be used to check if a checkbox has been selected or not, while the in_array() function can be used to check if a specific checkbox value is present in an array of selected values. By combining these functions, you can effectively manage multiple checkbox selections and process the data accordingly.

// Check if the checkbox is selected
if(isset($_POST['checkbox_name'])) {
    $selected_values = $_POST['checkbox_name'];
    
    // Check if a specific checkbox value is selected
    if(in_array('value_to_check', $selected_values)) {
        // Perform actions based on the selected checkbox value
        echo 'Checkbox with value "value_to_check" is selected';
    }
}