Zefix_search/deleteFiles.php

<?php
$taskDir = 'tasks';
include 'env_vars.php';
if($_POST["taskDeletePassword"] == getenv("taskDeletePassword")){
    $files = scandir($taskDir);
    $files = array_diff($files, array('.', '..'));
    foreach ($files as $file) {
        echo $file;
        unlink($taskDir.'/'.$file);
    }
}

?>