//excerpt
$file = new Zend_Form_Element_File(\'file\');
$file->setLabel(\'File to upload:\')
    ->setRequired(true)
    ->addValidator(\'NotEmp         
        // For Zend Framework :: Rename Uploaded File
 $renameFile = 'newName.jpg';
 $fullFilePath = '/images/'.$renameFile;
 // Rename uploaded file using Zend Framework
 $filterFileRename = new Zend_Filter_File_Rename(array('target' => $fullFilePath, 'overwrite' => true));
 $filterFileRename -> filter($name);