I have the following <td> tag with <a> tag in it that contains a php variable in href. I only can browse upto uploads folder. Does anyone know why? It supposed to browse until uploads\$_POST['searchInput']  . But it is not doing that. 
<td class="viewEditTd"><button class = "btn btn-info viewEditButton"><a href="file://///172.xx.xx.xxx\TEMP\xxx\uploads\"<?php echo $_POST['searchInput']; ?>"\" target="_blank"><span class="
        glyphicon glyphicon-folder-open" aria-hidden="true"></span> View File</a></button></td>