title: Send Query parameter value containing equals(=) character
body: <p>I am working on a simple http based application for android.</p>
  
  <p>I have login.php at a server and i am sending requests to it with the following values.</p>
  
  <pre><code>Uri.Builder loginUri =Uri.parse(LOGIN_API_URL).buildUpon();
  loginUri.appendQueryParameter("username", username);
  loginUri.appendQueryParameter("password", "FXK3guidUGU=");
  aQuery.ajax(loginUri.build().toString(), JSONObject.class,loginResponse);
  </code></pre>
  
  <p>The requests goes fine, but the PHP code receives password as <code>FXK3guidUGU</code>. Probably because of the equals(=) character. How do i ensure PHP receives the password inclusive of the equals(=) character?</p>
  
  <p>Here is my PHP code that filters the password:</p>
  
  <pre><code>$password = filter_input(INPUT_GET, 'password', FILTER_SANITIZE_SPECIAL_CHARS);
  </code></pre>
  
  <p>Thanks for your help.</p>