accesso utente scarica file pdf doc

[imperor]

accesso utente scarica file pdf doc

ciao e buona serata sto tentando di far scaricare un file pdf ma non riesco a capire perchè non lo scarica ma quando clicco per scaricare il file si vedono dei caratteri strani questo è ciò che ho fatto

 <?PHP
			
				
			// Define a function to list files and subfolders
				function list_files($dir) {
				  // Get an array of files and subfolders
				  $files = scandir($dir);
				  // Loop through the array
				  foreach ($files as $file) {
					// Skip the current and parent directories
					if ($file != "." && $file != "..") {
					  // Get the full path of the file or folder
					  $path = $dir . "/" . $file;
					  // Check if it is a file
					  if (is_file($path)) {
						// Get the file name
						$name = basename($path);
						// Encode the file path
						$url = urlencode($path);
						// Create a download link
						echo "Documento: <a href='download.php?file=$url'>$name</a><br>";
					  }
					  // Check if it is a folder
					  if (is_dir($path)) {
						// Print the folder name
						echo "Cartella: <b>$file</b>";
						// Call the function recursively
						list_files($path);
					  }
					}
				  }
				}

				// Call the function with the main directory
				list_files("documenti/".basename($_SESSION['username']));
				?>
---------------------------------------
download.php
<?php
if(isset($_GET['file'])){
    $var_1 = $_GET['file'];
$dir='documenti/';
}
?>
<?php
if(isset($_GET['file'])){
    $var_1 = $_GET['file'];
$file = $var_1;
if (file_exists($file)) {
    header('Content-Description: File Transfer');
    header('Content-Type: application/octet-stream');
    header('Content-Disposition: attachment; filename='.basename($file));
    header('Expires: 0');
    header('Cache-Control: must-revalidate');
    header('Pragma: public');
    header('Content-Length: ' . filesize($file));
    ob_clean();
    flush();
    readfile($file);
    exit;
}
echo "<h1>Content error</h1><p>il file non esiste!</p>";
}
?>

[imperor]

risolto non so il perchè ma ha funzionato