php code in a custom button

// Custom3
  else if (cmdID == 'custom3') {  // insert some text
    editor_insertHTML (objname, '<P align=center><?php a href="http://www.domainname.com/store/specialship.php?$product_info['products_name']"?><IMG src="https://www.domainname.com/store/images/boats.jpg" align=baseline border=0>&nbsp;&nbsp;Click here to reserve this item on our next boat shipment!</a></p>');
  }