concordance-checker/public/api.php

<?PHP
/**
 * Provides the API.
 */
declare(strict_types = 1);

require_once __DIR__ . '/../provideEnv.php';

header('Content-Type: application/json; charset=utf-8');

$verb = MD_STD_IN::get_http_input_text("verb");
$subject = MD_STD_IN::get_http_input_text("subject");

$output = match ($verb) {
    'evaluate' => (new ConcordanceChecker($subject))->evaluate(explode(PHP_EOL, $_POST['terms'] ?? $_GET['terms'] ?? [])),
    default => throw new MDpageParameterNotFromListException(),
};

echo MD_STD::json_encode($output);