<form method="post" action="dump.php">
  <textarea name="content"></textarea>
</form>

tinymce.init({
  selector: "textarea",
  plugins: [
    "advlist",
    "anchor",
    "autolink",
    "charmap",
    "code",
    "fullscreen",
    "help",
    "image",
    "insertdatetime",
    "link",
    "lists",
    "media",
    "preview",
    "searchreplace",
    "table",
    "visualblocks",
    "powerpaste"
  ],
  toolbar:
    "undo redo | styles | bold italic underline strikethrough | alignleft aligncenter alignright alignjustify | bullist numlist outdent indent | link image",
});