php - Save zip file in a different directory than the level at which code file is present -

i have written code zip content of given directory, code runs want save zip file in different directory calling function.

code:

$source = realpath('application'); $address = realpath('backup'); $destination = $address . directory_separator . 'download.zip';  if (file_exists($destination)) {     echo "the file $filename exists"; } else {     echo "the file $filename not exist"; }  zip($source, $destination);  function zip($source, $destination) {     if (!extension_loaded('zip') || !file_exists($source)) {         return false;     }      $zip = new ziparchive();     if (!$zip->open($destination, ziparchive::create)) {         return false;     }      $source = str_replace('\\', '/', realpath($source));      if (is_dir($source) === true)     {         $files = new recursiveiteratoriterator(new recursivedirectoryiterator($source), recursiveiteratoriterator::self_first);          foreach ($files $file)         {             $file = str_replace('\\', '/', $file);              // ignore "." , ".." folders             if( in_array(substr($file, strrpos($file, '/')+1), array('.', '..')) )                 continue;              $file = realpath($file);              if (is_dir($file) === true)             {                 $zip->addemptydir(str_replace($source . '/', '', $file . '/'));             }             else if (is_file($file) === true)             {                 $zip->addfromstring(str_replace($source . '/', '', $file), file_get_contents($file));             }         }     }     else if (is_file($source) === true)     {         $zip->addfromstring(basename($source), file_get_contents($source));     }      return $zip->close(); } 

the zip file not created code, if this

$destination = 'zip.php'; 

the zip file created. do save file in other directory.

are sure, backup dir exists? create zip file inside backup folder. append bellow code existing code

$address = realpath('backup'); if (!file_exists($address)){     if (!mkdir($address, 0777, true)) {             die('failed create folder.');     } } 

hope solve problem. or else check backup folder file access permissions.