The CI framework implements the function of recursively generating file paths and regenerating pictures

This article describes the example of CI framework to achieve recursive generation of file path and image regeneration function. Share it for your reference, as follows:

<?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();
  }
  /**
   *  Get information about the path to read 
   * $map = array (
   *         ' Path name ' => array ( Documents 1,  Documents 2,  Documents 3)
   *     )
   */
  public function index()
  {
    $this->load->helper('directory');
    // Read the information of the path 
    $map = directory_map(self::$img_path, FALSE, TRUE);
    echo "<pre>";
    print_r($map);
    echo "</pre>";
    if(!empty($map) && is_array($map))
    {
      $this->build_path($map);
    }
  }
  /**
   *  Recursively generate the corresponding path 
   * @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;
    }
  }
  /**
   *  Generate a new picture from the original picture 
   * @param array $img
   * $img = array('source_image'=> ' The path of the original picture ', 'new_image' => ' New picture path ')
   */
  private function build_img($img = array())
  {  
    if(!is_array($img) || empty($img))
    {
      return FALSE;
    }
    // Setting Image Generation Parameters 
    $config['image_library']  = 'gd2';  // Setting up Image Gallery 
    $config['source_image']   = $img['source_image']; // Set the name of the original image / Path 
    $config['create_thumb']   = FALSE;  // Let the image processing function generate 1 Preview images 
    $config['maintain_ratio']  = TRUE; // Specifies whether to keep the original aspect scale of the image when scaling or using hard values 
    //$config['quality']     = 200;
    $img_info = array();
    $img_info = getimagesize($config['source_image']);// Get the size of the picture 
    if(is_array($img_info) && !empty($img_info))
    {
      $config['width']      = $img_info[0];
      $config['height']      = $img_info[1];
    }
    $config['new_image']    = $img['new_image']; // New picture path 
    $this->load->library('image_lib', $config); // Load a picture processing class 
    $this->image_lib->initialize($config); // Call 
    if ( ! $this->image_lib->resize())
    {
      echo $this->image_lib->display_errors();
    }    
    $this->image_lib->clear(); // Clear picture processing parameters 
  }
}
?>

More readers interested in CodeIgniter can check the topics on this site: "codeigniter Introduction Tutorial", "CI (CodeIgniter) Framework Advanced Tutorial", "php Excellent Development Framework Summary", "ThinkPHP Introduction Tutorial", "ThinkPHP Common Methods Summary", "Zend FrameWork Framework Introduction Tutorial", "php Object-Oriented Programming Introduction Tutorial", "php+mysql Database Operation Introduction Tutorial" and "php Common Database Operation Skills Summary"

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