PHP代码不能在我的服务器上工作（但在wamp上正常工作）

php code doesn`t work on my server (but works fine on on wamp ) i uploded pages on my server all pages contain php code and run successfully only home page dose not work on the server where it run successfully on my local machine on wamp server so what can i do ti solve this problem the home page on my server

http://opvmmanagement.com/index.php

 <?php 
  require_once('admin/lib/projects.php');
  $_project = new Projects();
  $_Projects = $_project->get_all();
  $x = count($_Projects);
  for ($i=0; $i <3 ; $i++) 
  {


    echo '<div class="col-xs-12 col-sm-6 col-md-4 col-lg-3">
        <div class="item_property">
            <div class="head_property">
              <a href="properties.html">
                <div class="title rent"></div>
                <img src="admin/'.$_Projects[$i]['pimage'].'" alt="Image" width="270" height="202" />
                <h5>'.$_Projects[$i]['pname'].'</h5>
              </a>
            </div>                        
            <div class="info_property">                                  
                <ul>
                    <li><strong>Place </strong><span>'.$_Projects[$i]['pplace'].'</span></li>
                    <li><strong>Price</strong><span>'.$_Projects[$i]['pprice'].'</span></li>
                </ul>                                 
            </div>
          </div>
    </div>';
  }

?>