Codeigniter 图片调整大小仅调整一个图片

Question

我基本上想要做的是将一张图片调整大小为两个不同尺寸的图片。但我只能调整第一个 featured_$filename ，而不能调整 thumb_$filename 。

最初，我尝试创建一个单独的函数，并将配置作为数组传递，但它没有起作用，只有单个图像被调整大小。

    $this->resizeImage($imagePath, $file['upload_data']['file_name']);


    $this->resizeThumb($imagePath, $file['upload_data']['filename']);

public function resizeImage($imagePath, $filename){
        $config['image_library'] = 'gd2';
        $config['source_image'] = $imagePath; 
        $config['create_thumb'] = FALSE;
        $config['new_image'] = 'featured_'.$filename;
        $config['maintain_ratio'] = TRUE;
        $config['width']     = 570;
        $config['height']   = 372;
        $this->load->library('image_lib', $config); 
        $this->image_lib->resize();
        $this->image_lib->clear();


    }

    public function resizeThumb($imagePath, $filename){
        $config['image_library'] = 'gd2';
        $config['source_image'] = $imagePath; 
        $config['create_thumb'] = FALSE;
        $config['new_image'] = 'thumb_'.$filename;
        $config['maintain_ratio'] = TRUE;
        $config['width']     = 180;
        $config['height']   = 135;
        $this->load->library('image_lib', $config); 
        $this->image_lib->resize();
        $this->image_lib->clear();


    }

- prakashchhetri

Answer 1

您需要加载库仅一次，但使用不同的配置初始化库两次。例如：

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

/* size 64*72 for comments */
$configThumb = array();  
$configThumb['image_library']   = 'gd2';  
$configThumb['create_thumb']    = TRUE;
$configThumb['new_image']       = './profile_images/thumbs/';  
$configThumb['maintain_ratio']  = TRUE;
$configThumb['width']           = 64;  
$configThumb['height']          = 72;
$configThumb['thumb_marker']    = "";
//$this->load->library('image_lib');
/* size 64*72 for comments */

/* size 167*167 for profile page */
$configThumbMedium = array();  
$configThumbMedium['image_library']   = 'gd2';  
$configThumbMedium['create_thumb']    = TRUE;
$configThumbMedium['new_image']       = './profile_images/medium/';  
$configThumbMedium['maintain_ratio']  = TRUE;
$configThumbMedium['width']           = 167;  
$configThumbMedium['height']          = 167;
$configThumbMedium['thumb_marker']    = "";
/* size 167*167 for profile page */

if(!$this->upload->do_upload('image')){
    return 0;
}

$uploadedDetails    = $this->upload->data();
if($uploadedDetails['is_image'] == 1){
    $this->image_lib->initialize($configThumb);
    $this->image_lib->resize();
    $this->image_lib->initialize($configThumbMedium);
    $this->image_lib->resize();
}

希望这有所帮助。

- Nil'z

---

漂亮格式的答案。我会在检查之后接受答案。谢谢。 - prakashchhetri

加1分给实用的答案。 - Nikz

Answer 2

首先载入库，然后使用$this->image_lib->initialize($config) 来传递配置信息，在新图像的配置中也需要传递包含新图像名称的路径。

$this->load->library('image_lib');     
$config['new_image'] = 'image_dir/thumb_'.$filename
//ALL your other configs
$this->image_lib->initialize($config)

- umefarooq