CI框架重新生成图片（递归文件）

<?php if ( ! defined('BASEPATH')) exit('No direct script access allowed');



set_time_limit(0);



class Img_build  extends CI_Controller{

   

    private  static $img_path =    'upload_old/';    

    private  static $new_path =    'upload/';





    function __construct()

    {

            parent::__construct();

    }

    

    /**

     * 获取需要读取的路径的信息

     * $map =  array (

     *                  '路径名' => array (文件1, 文件2, 文件3)         

     *         )

     */

    public function index()

    {

        $this->load->helper('directory');

        //读取路径的信息

        $map = directory_map(self::$img_path, FALSE, TRUE);            



        echo "<pre>";

        print_r($map);

        echo "</pre>";

        

        if(!empty($map) &&  is_array($map))

        {

            $this->build_path($map);

        }



        

    }





    /**

     * 递归生成相应的路径

     * @param array $map

     */

    private function build_path($map = array())

    { 

        if(!file_exists(self::$new_path))

        {

            mkdir(self::$new_path, 0777);

        }





        foreach($map as $key => $val)

        {

           $old_img_path = self::$img_path;

           $old_tmp_path = self::$img_path.$key.'/';



           $new_img_path = self::$new_path;

           $new_tmp_path = self::$new_path.$key.'/';

           

           

            if(is_dir($old_tmp_path))

            {

                //echo $new_tmp_path;

                if(!file_exists($new_tmp_path))

                {

                    mkdir($new_tmp_path, 0777);

                }



                self::$img_path = $old_tmp_path;

                self::$new_path = $new_tmp_path;

                

                echo 'path:'.self::$img_path."<hr>";



                $this->load->helper('directory');

                $c_map = directory_map($old_tmp_path, FALSE, TRUE);





//                     echo "<pre>";

//                     print_r($c_map);

//                     echo "</pre>";                   



                if(!empty($c_map)  &&  is_array($c_map))

                {

                    $this->build_path($c_map);

                }

                

            }



            if(is_file(self::$img_path.$val))

            {

                echo 'file:'.self::$img_path.$val."<hr>";

                

                $img = array();

                $img['source_image'] = self::$img_path.$val;

                $img['new_image']    = self::$new_path.$val;

                $this->build_img($img);

            }



            self::$img_path = $old_img_path;

            self::$new_path = $new_img_path;



        }

    }



    /**

     * 根据原图片生成新的图片

     * @param array $img

     * $img = array('source_image'=> '原图片的路径', 'new_image' => '新图片路径')

     */

    private function build_img($img = array())

    {    

        if(!is_array($img) || empty($img))

        {

            return FALSE;

        }



        //设置图像生成参数

        $config['image_library']    = 'gd2';   //设置图像库

        $config['source_image']     = $img['source_image'];  //设置原始图像的名字/路径

        $config['create_thumb']     = FALSE;   //让图像处理函数产生一个预览图像

        $config['maintain_ratio']   = TRUE;  //指定是否在缩放或使用硬值的时候使图像保持原始的纵横比例

        //$config['quality']          = 200; 

        $img_info = array();

        $img_info = getimagesize($config['source_image']);//获取图片的尺寸



        if(is_array($img_info) && !empty($img_info))

        {

            $config['width']            = $img_info[0];

            $config['height']           = $img_info[1];      

        }



        $config['new_image']        = $img['new_image']; //新图片路径            



        $this->load->library('image_lib', $config);  //加载图片处理类 

        $this->image_lib->initialize($config);  //调用            



        if ( ! $this->image_lib->resize())

        {

            echo $this->image_lib->display_errors();               

        }        



        $this->image_lib->clear();  //清除图片处理参数





    }

}



?>