笨根據您可以調整與image_lib圖像CI文件調整圖像和創建縮略圖

Question

喜而有一些建議，我們可以從圖像

create_thumb FALSE TRUE/FALSE (boolean) Tells the image processing function to create a thumb. R 
thumb_marker _thumb None Specifies the thumbnail indicator. It will be inserted just before the file extension, so mypic.jpg would become mypic_thumb.jpg R 

所以在這裏創造更多的縮略圖選項是我的代碼

 $config_manip = array(
      'image_library' => 'gd2', 
      'source_image' => "./uploads/avatar/tmp/{$this->input->post('new_val')}", 
      'new_image'  => "./uploads/avatar/{$this->input->post('new_val')}", 
      'maintain_ratio'=> TRUE , 
      'create_thumb' => TRUE , 
      'thumb_marker' => '_thumb' , 
      'width'   => 150, 
      'height'  => 150 
     ); 

     $this->load->library('image_lib', $config_manip); 
     $this->image_lib->resize(); 

我會承擔這個代碼重新調整我的形象，也創建縮略圖，但我只能獲得指定的尺寸和_tump後綴一個圖像

我阿爾斯Ø嘗試添加該代碼手動創建第二圖像，但仍然不工作，我只能得到一個圖像

  $this->image_lib->clear(); 

$config_manip['new_image'] = 
"./uploads/avatar/thumbnail_{$this->input->post('new_val')}"; 

      $config_manip['width']  = 30 ; 
      $config_manip['height'] = 30 ; 
      $this->load->library('image_lib', $config_manip); 
      $this->image_lib->resize(); 

Answer 1

看來路徑是在你的代碼的問題。我修改並測試了它自己的工作原理。

public function do_resize() 
{ 
    $filename = $this->input->post('new_val'); 
    $source_path = $_SERVER['DOCUMENT_ROOT'] . '/uploads/avatar/tmp/' . $filename; 
    $target_path = $_SERVER['DOCUMENT_ROOT'] . '/uploads/avatar/'; 
    $config_manip = array(
     'image_library' => 'gd2', 
     'source_image' => $source_path, 
     'new_image' => $target_path, 
     'maintain_ratio' => TRUE, 
     'create_thumb' => TRUE, 
     'thumb_marker' => '_thumb', 
     'width' => 150, 
     'height' => 150 
    ); 
    $this->load->library('image_lib', $config_manip); 
    if (!$this->image_lib->resize()) { 
     echo $this->image_lib->display_errors(); 
    } 
    // clear // 
    $this->image_lib->clear(); 
} 

希望這可以幫助你。謝謝！！

Answer 2

創建縮略圖的簡單方法。

function _create_thumbnail($fileName, $width, $height) 
{ 
    $this->load->library('image_lib'); 
    $config['image_library'] = 'gd2'; 
    $config['source_image'] = $_SERVER['DOCUMENT_ROOT']. $fileName;  
    $config['create_thumb'] = TRUE; 
    $config['maintain_ratio'] = TRUE; 
    $config['width']   = $width; 
    $config['height']   = $height; 
    $config['new_image']  = $_SERVER['DOCUMENT_ROOT']. $fileName;    
    $this->image_lib->initialize($config); 
    if (! $this->image_lib->resize()) { 
     echo $this->image_lib->display_errors(); 
    }   
} 

Answer 3

如果要使用resize()方法來創建一個以上的圖像，你需要調用$this->image_lib->initialize($config);每次嘗試調整大小的時間。

本教程解決了這個問題對我來說Upload Image and Create Multiple Thumbnail Sizes in CodeIgniter

Answer 4

你的代碼是好的，但你需要做一個小的變化。

$this->load->library('image_lib'); 
$this->image_lib->initialize($config_manip);