Estrazione di zip file

[luqwe]

Ho un problema nello scompattamento ddei ifle zip.
In locale funziona tutto correttamente ma in remoto no! E non mi da alcun messaggio di errore.
Posto il codice sperando che a qualcuno venga un'idea. VVoVe:

$path = $_SERVER['DOCUMENT_ROOT'];
echo $filezip = $path."foto.zip";
$zip = zip_open($filezip);
if ($zip) {
    while ($zip_entry = zip_read($zip)) {
        if (zip_entry_filesize($zip_entry) > 0) {
                // str_replace must be used under windows to convert "/" into "\"
                // rimpiazza le barre
            $complete_path = $zippath.str_replace('/','"\\\"',dirname(zip_entry_name($zip_entry)));
             $complete_name = $zippath.str_replace ('/','"\\\"',zip_entry_name($zip_entry));
               if(!file_exists($complete_path)) { 
                 $tmp = '';
                 foreach(explode('"\\\"',$complete_path) AS $k) {
                   $tmp .= $k.'"\\\"';
                   if(!file_exists($tmp)) {
                 mkdir($tmp, 0777); 
                       }
                 
                } // end foreach
               } //end if
            else { echo "esiste il complete path"; }
        if (zip_entry_open($zip, $zip_entry, "r")) {
            $fd = fopen($complete_name, 'w');
            fwrite($fd, zip_entry_read($zip_entry, zip_entry_filesize($zip_entry)));        
            zip_entry_close($zip_entry);
            } //end if
            else { echo "NON è Zip Entry open"; }
          } // end if in while
          else { echo " Filesize <1"; }
          $j += 1;
           } // end while
   zip_close($zip);
  } // end first if
  else { echo "Non risco ad aprire il file"; }