CI框架实现递归生成文件路径并重新生成图片功能

<?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 "

";
    print_r($map);
    echo "

"; 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."

---

"; $this->load->helper('directory'); $c_map = directory_map($old_tmp_path, FALSE, TRUE); // echo "

";
//           print_r($c_map);
//           echo "

"; 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."

---

"; $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 } } ?>