实现头像上传及剪切功能（cakephp+jquery）

此功能的优点就不多说了，具体实现如下：1、必备：PHP4以上，gd库，jquery，及下载安装<a href="http://odyniec.net/projects/imgareaselect/">jquery.imgareaselect.min.js</a>2、创建组件jq_imgcrop.php，放在app/controllers/components<a href="http://www.zhuyinghao.com/wp-content/uploads/2009/03/jq_imgcrop.php">下载</a>3、创建helper助手cropimage.php，放在app/views/helpers/<a href="http://www.zhuyinghao.com/wp-content/uploads/2009/03/cropimage.php">下载</a>4、在控制器中添加引用 <code> var $helpers = array(..., 'Cropimage') ; var $components = array(..., 'JqImgcrop'); </code>5、创建视图，使可以上传头像。<code>function icon(){if (!empty($this->data)) {$uploaded = $this->JqImgcrop->uploadImage($this->data['User']['user_icon'], '/icon/', 'ef_',$this->Auth->user('user_id'));$this->set('uploaded',$uploaded);//echo $data['User']['user_icon'];exit;if (!isset($data['User']['user_icon'])||$data['User']['user_icon']==''){$suffix = substr(strrchr($this->data['User']['user_icon']['name'], "."), 1);$user_icon = 'ef_'.$this->Auth->user('user_id').'.'.$suffix;$this->User->query("UPDATE users SET user_icon = '".$user_icon."' where user_id= ".$this->Auth->user('user_id')."");}}$data= $this->User->findByUserId($this->Auth->user('user_id'), array("user_icon"));$this->set('user_icon',isset($data['User']['user_icon'])?$data['User']['user_icon']:"user.jpg");}</code>6、上传后跳转到的控制器：<code>function crop(){if (!empty($this->data)) {$this->JqImgcrop->cropImage(48, $this->data['User']['x1'], $this->data['User']['y1'], $this->data['User']['x2'], $this->data['User']['y2'], $this->data['User']['w'], $this->data['User']['h'], $this->data['User']['imagePath'], $this->data['User']['imagePath']) ;}$this->redirect('/users/setting');}</code>参考：http://www.zhuyinghao.com/?p=220