file - Image Upload in zend form -


i unable upload image in zend form , unable save image in database.please me , forward code

public function getlogoform() {     //create form     $form = new zend_form();     $form->setaction('logoupdate');     $form->setmethod('post');     $form->setattrib('enctype', 'multipart/form-data');     $form->setattrib('sitename', 'hostname');      $logo = new zend_form_element_file('logo');     $logo->setdecorators(array('file',             array(array('data'=>'htmltag'), array('tag' => 'td')),             array('label', array('tag' => 'td')),             array(array('row'=>'htmltag'),array('tag'=>'tr'))     ));     $logo->setlabel('logo (png) ');     $logo->setrequired(true);     $logo->setdestination('includes/images/logo/');     $logo->addvalidator('count', false, 1);     $logo->addvalidator('extension', false, 'png');      $form->addelement($logo);      //create submit button.     $form->addelement('submit', 'submit');     $submitelement = $form->getelement('submit');     $submitelement->setattrib('class',"button");     $submitelement->setdecorators(array('viewhelper',             'description',             'errors', array(array('data'=>'htmltag'), array('tag' => 'td',                 'colspan'=>'2','align'=>'right')),             array(array('row'=>'htmltag'),array('tag'=>'tr'))     ));     $submitelement->setlabel('change logo');      $form->setdecorators(array('formelements',             array(array('data'=>'htmltag'),array('tag'=>'table')), 'form'     ));     //return form     return $form; }

changelogoaction

$form = $this->getlogoform(); $this->view->lform = $lform;

logoupdateaction

$form = $this->getlogoform(); if($form->isvalid($_post)){     $form->logo->receive();     $this->view->success = array('logo' => 'logo has been changed'); } else {     $this->view->errors = $form->getmessages();     $this->view->form = $form;     $this->render("changelogo"); }

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