markup.php
<?php
$markdownText = $_POST['markdown_text'];
$method = $_POST['method'];
$parsedown = new \Parsedown();
$markdownHtml = $parsedown->text($markdownText);
if ($method=='json'){
$data = array(
"htmlText" => $markdownHtml
);
echo json_encode($data);
} else if ($method=="plaintext"||TRUE){
echo $markdownHtml;
}
exit;
?>