非法字符串偏移'名称'[APP \ Controller \ PostsController.php，第18行]

Question

我是cakephp和php的新手，我试图在上传文件后将文件保存到文件夹中。

public function add() { 
    if ($this->request->is ('post')) { 
     $filename = "app/webroot/img/uploads/" . $this->data ['Post'] ['Image'] ['name']; 
     if ((move_uploaded_file ($this->data ['Post'] ['Image'] ['tmp_name'], $filename))) { 
      $this->Mathang->create(); 
      if ($this->Post->save ($this->request->data)) { 
       $this->Session->setFlash (__ ('save images successful.')); 
       redirect()   
       $this->redirect ('/posts/upload'); 
      } 
     } else { 
      $this->Session->setFlash (__ ('not save images.')); 
     } 
    } 
} 

Answer 1

 if ($this->request->is('post')) {   
    $filename=$this->request->data('Post.image'); 

    $filename = "app/webroot/img/uploads/".$_FILES[$filename]['name']; 
    $tempname=$this->request->data('Post.image'); 
    if((move_uploaded_file($_FILES[$tempname']['tmp_name'],$filename)){ 

      if ($this->Post->save($this->request->data)) { 
     $this->Session->setFlash(__('save images successful.')); 
     redirect() 
     $this->redirect('/posts/upload'); 
    }}else{ 
    $this->Session->setFlash(__('not save images.'));} 
}