post method doesn´t work

[eluser]InsiteFX[/eluser]
I' am running PHP 5.3 with Xampp and post works fine, so your problem is in your coding.

Also you should always give your form inputs an id="user"

This uses Twitter Bootstrap 3.0 but should give you an idea.

Code:

<div class="col-lg-3"></div>
<div class="col-lg-6">
<div class="panel panel-default">
    <div class="panel-heading"><h3 class="panel-title">User Login.</h3></div>

  &lt;form method="POST" class="form-horizontal" role="form"&gt;
   <div class="panel-body">
    <fieldset>
     <div class="form-group">
      <label for="user_name" class="col-lg-5 control-label">User name:</label>
      <div class="col-lg-7">
       &lt;input type="text" class="form-control" id="user_name" name="user_name" placeholder="User name" value="&lt;?php echo set_value('user_name'); ?&gt;"&gt;&lt;?php echo form_error('user_name'); ?&gt;
      </div>
     </div>

     <div class="form-group">
      <label for="user_password" class="col-lg-5 control-label">Password:</label>
      <div class="col-lg-7">
       &lt;input type="password" class="form-control" id="user_password" name="user_password" placeholder="Password" value="&lt;?php echo set_value('user_password'); ?&gt;"&gt;&lt;?php echo form_error('user_password'); ?&gt;
      </div>
     </div>

     <div class="form-group">
      <div class="col-lg-offset-5 col-lg-7">
       <div class="checkbox">
        <label>
         &lt;input type="checkbox" id="user_remember_me" name="user_remember_me" value="1" &lt;?php echo set_checkbox('user_remember_me', '1', FALSE); ?&gt;&gt; Remember me.
        </label>
       </div>
      </div>
     </div>

     <hr />

     <div class="form-group">
      <div class="col-lg-offset-5 col-lg-7">
       <button type="submit" class="btn btn-primary" name="login" value="Login">Login</button>
      </div>
     </div>
    </fieldset>
   </div>
  &lt;/form&gt;

</div>
</div>

<div class="col-lg-3"></div>