yii2 缩略图功能的实现

yii2 缩略图功能
这是缩略图的代码，我这里并没有直接去作为一个插件去使用，而是作为一个models 来使用

<?phpnamespace app\models; // 这里的命名空间根据自己的配置，自己来修改use Yii;/** * This is the model class for table "information". * * @property integer $id * @property string $name * @property string $icon * @property string $bigImage * @property integer $mbuyId * @property string $smallTitle * @property string $content * @property integer $browseNum * @property integer $praiseNum * @property integer $commentNum * @property integer $status * @property integer $recommend * @property integer $recitems * @property string $createtime * @property string $remarks * @property string $username */class SmallImage extends \yii\db\ActiveRecord{    /**     * @inheritdoc     */    private $src;    private $imageinfo;    private $image;    public  $percent = 0.1;    public function __construct($src){        $this->src = $src;    }    public static function tableName()    {        return 'information';    }    /**     * @inheritdoc     */    /**     * @inheritdoc     */    public function openImage(){        list($width, $height, $type, $attr) = getimagesize($this->src);        $this->imageinfo = array(            'width'=>$width,            'height'=>$height,            'type'=>image_type_to_extension($type,false),            'attr'=>$attr        );        $fun = 'imagecreatefrom'.$this->imageinfo['type'];        $this->image = $fun($this->src);    }    /**    操作图片     */    public function thumpImage(){        $new_width = $this->imageinfo['width'] * $this->percent;        $new_height = $this->imageinfo['height'] * $this->percent;        $image_thump = imagecreatetruecolor($new_width,$new_height);        //将原图复制带图片载体上面，并且按照一定比例压缩,极大的保持了清晰度        imagecopyresampled($image_thump,$this->image,0,0,0,0,$new_width,$new_height,$this->imageinfo['width'],$this->imageinfo['height']);        imagedestroy($this->image);         $this->image =   $image_thump;    }    /**    输出图片     */    public function showImage(){        header('Content-Type: image/'.$this->imageinfo['type']);        $funcs = "image".$this->imageinfo['type'];        $funcs($this->image);    }    /**    保存图片到硬盘     */    public function saveImage($sname){        $funcs = "image".$this->imageinfo['type'];        $funcs($this->image,$sname.$this->imageinfo['type']);    }    /**    销毁图片     */    public function __destruct(){        imagedestroy($this->image);    }}把上面代码放入models 之后，然后就可以在控制器里面写代码了这里是我的控制器的代码$image = new SmallImage($src); //实例化图片models$image->percent = 0.5625; // 这里是宽高比，根据自己需要来调整$image->openImage(); //打开图片$image->thumpImage();//生成缩略图$name = time();$sname = 'uploads/small/'.$name.'.'; //这是我自己写的路径$mname = Yii::$app->request->hostInfo.Yii::$app->request->baseUrl.'/'.'uploads/small/'.$name.'.'.    //这里是写的一个路径，为了缩略图的                            'jpeg';$image->saveImage($sname); //保存缩略图到上述的路径下 $model->icon=$mname; //这里是yii2的保存

喜欢的可以收藏下，我会不定时更新一些实用的东西