<?php
$output = [];
// Replace 'sudo' with appropriate command if necessary
exec('sudo service nginx restart', $output, $return_var);

if ($return_var === 0) {
    echo "Nginx service restarted successfully.";
} else {
    echo "Failed to restart Nginx service.";
    // Optionally, you can also print the output to see any error messages
    print_r($output);
}
?>