title: transferring a variable through different web pages in wordpress
body: <p>Currently I'm building a plug-in for wordpress, where I have a couple of webpages with tables, filled with data from a database. Right now I'm working on the part where I click on a number (MemberID) which should redirect to a page, having all the information from another table regarding this number. I've tried transfering the data through the URL, with both </p>
  
  <pre><code>    ?MemberID=".$item-&gt;MemberID." 
  </code></pre>
  
  <p>and </p>
  
  <pre><code>    /MemberID="$item-&gt;MemberID."
  </code></pre>
  
  <p>, but everytime I try to alter the URL, the webpages suddenly can't seem to find itself anymore. I'm sure it has to do whith this part of the code:</p>
  
  <pre><code>    add_submenu_page( null    , 'Manage memberDetails'  , 'memberDetails'   , 'manage_options', 'memberDetails'       , 'memberDetails_list'   );
  </code></pre>
  
  <p>where the fifth value sets the URL for this page to be</p>
  
  <pre><code>    http://localhost/wordpress/wp-admin/admin.php?page=memberDetails
  </code></pre>
  
  <p>So whenever I try to add something behind that URL, it doesn't acknowledge the existance of said page anymore, resulting in a redirection error.</p>
  
  <p>Is there a way to transfer the variable without using the URL, or is there a way to give more of a dynamic to the URL?</p>