包含PHP文件后脚本不起作用

I have some problems when I include a PHP file. I am trying this for the first time so I don't really know how to get this is working. The PHP file doesn't respond anymore when I include something. Here is some code:

<html>
    <head>
        <title>Testing opus class</title>
    </head>
    <body>
        <?php
            include('eedce5ed141dd72b552b7abdeb48ede3ddebc0c4.php');
            $opus = new opus();
            print "Test"; // It isn't printing "Test" over here

Check if you get any errors with error reporting:

<?php
    ini_set("display_errors", 1);
    error_reporting(E_ALL);
?>

Also make sure you don't have any error's in the file which you include!