mvc - thinkphp builds website backend, the entry file cannot be found (cannot be loaded)

As shown in the picture, this is the general structure of my project

The following is the entry file index.php
if (version_compare(PHP_VERSION, '5.3.0', '<')) {

die('require PHP > 5.3.0 !');
</p>
<p>}</p>
<p>// To enable debugging mode, it is recommended to enable deployment phase comments during the development phase or set it to false<br>define('APP_DEBUG', true);<br>// Define the application directory<br>//define('BIND_MODULE','Admin');//here It is the definition of binding the admin template found in the tp manual<br>define('APP_PATH', './Application/');</p>
<p>//Introduce ThinkPHP entry file<br>require './ThinkPHP/ThinkPHP.php';</p>
<p><img  data-src="/img/bVEwib" alt="mvc - thinkphp builds website backend, the entry file cannot be found (cannot be loaded)" ></p>
<p>As shown in the picture, this is define('BIND_MODULE','Admin'); after commenting it out, the page will display normally</p>
<p><img  data-src="/img/bVEwiO" alt="mvc - thinkphp builds website backend, the entry file cannot be found (cannot be loaded)" ><br>This is define('BIND_MODULE','Admin'); if not commented, an error will be reported</p>
<p><img  data-src="/img/bVEwjb" alt="mvc - thinkphp builds website backend, the entry file cannot be found (cannot be loaded)" ><br>Bind the admin template, but still cannot enter the background entry file</p>
<p>There is a lot of content, but the question is actually just one: how to build the website backend with the thinkphp framework (How to configure the admin entry file like this?)</p>

                            
                        


                                                                                                                        
                     <h2>Reply content:</h2>
                      
                                                            
<p><img  data-src="/img/bVEwhk" alt="mvc - thinkphp builds website backend, the entry file cannot be found (cannot be loaded)" ><br>As shown in the picture, this is the general structure of my project</p>
<p>The following is the entry file index.php<br>if (version_compare(PHP_VERSION, '5.3.0', '<')) {</p>
<pre class="brush:php;toolbar:false"><code>die('require PHP > 5.3.0 !');
</p>
<p>}</p>
<p>// To enable debugging mode, it is recommended to enable deployment phase comments during the development phase or set it to false<br>define('APP_DEBUG', true);<br>// Define the application directory<br>//define('BIND_MODULE','Admin');//here It is the definition of binding the admin template found in the tp manual<br>define('APP_PATH', './Application/');</p>
<p>//Introduce ThinkPHP entry file<br>require './ThinkPHP/ThinkPHP.php';</p>
<p><img  data-src="/img/bVEwib" alt="mvc - thinkphp builds website backend, the entry file cannot be found (cannot be loaded)" ></p>
<p>As shown in the picture, this is define('BIND_MODULE','Admin'); after commenting it out, the page will display normally</p>
<p><img  data-src="/img/bVEwiO" alt="mvc - thinkphp builds website backend, the entry file cannot be found (cannot be loaded)" ><br>This is define('BIND_MODULE','Admin'); if not commented, an error will be reported</p>
<p><img  data-src="/img/bVEwjb" alt="mvc - thinkphp builds website backend, the entry file cannot be found (cannot be loaded)" ><br>Bind the admin template, but still cannot enter the background entry file</p>
<p>There is a lot of content, but the question is actually just one: how to build the website backend with the thinkphp framework (How to configure the admin entry file like this?)</p>

                            
                        
            <p class="answer fmt" data-id="1020000007235076">
                                    </p>
<p><code>No input file specified. It seems to be a problem with fast-cgi settings. What server is used, Apache or Nginx. Paste the configuration file.