使用目录中的文件名填充下拉列表在PHP中

Question

I was trying to populate my dropdown menu with file names from a directory, I have searched for articles here at SO regarding this inquiry I found several answers and tried them but none of them seems to work which I find weird because they were chosen as answers and some of them have High votes take this article for example this is one of the reference that I have tried but it seems like it does not work for me

Here is my code based on the reference link that I Have provided

<select name="templ" class="form-control input-sm">
    <?php 
         foreach(glob(dirname(__FILE__) . '/els-content/*') as $filename){
             $filename = basename($filename);
             echo "<option value='" . $filename . "'>".$filename. </option>";
         }
    ?>  
</select>

this does not return any values at all. What could be the problem ?

Answer 1

Hi Ok so I was able to answer my own question because of what @bobdye had pointed out, okayyy I'll cut to the chase here is how it was solved

dirname(FILE) . '/els-content/*'

returns the current directory plus the string '/els-content/*' which my problem is the files from els-content does not show on my dropdown so I used echo to check what does that return so I find out that it returns something like this

Users/WhosPC/Desktop/cms_form/myPadmin/els-content/*

in which els-content is FOUND OUTSIDE the myPadmin meaning els-content is on the same level as my myPadmin so what I did was I used chdir() then used getcwd() inside a variable

so what it look like was

                   <?php
                        chdir('../');
                      $s =  getcwd();
                        ?>
                    <select name="templ" class="form-control input-sm">
                    <?php 
                           foreach(glob($s . '/els-content/*') as $filename){
                           $filename = basename($filename);
                           echo "<option value='" . $filename . "'>".$filename."</option>";

                        }
                    ?>  
                        </select>

although I'm not sure if chdir('../') and getcwd() is reliable enough for this kind of task.. when this cms baby is on the real world up and runnning

feel free to critize this script so I can improve this further

UPDATED CODE

             $s =  realpath(getcwd()."/..");
                    foreach(glob($s . '/els-content/*') as $filename){
                   $filename = basename($filename);

                   echo "<option value='" . $filename . "'>". $filename."</option>";

                }

Ok I didnt delete the 1st version of my code so that users who stumble on this post could see the difference of the 1st one and the 2nd code that @prodigitalson had pointed out on my 1st code snippet