如何使用Codeigniter创建多个缩略图

Question

我在尝试使用foreach循环创建缩略图时遇到问题。我使用CI的内置类image_lib来剪切图像，但它只会创建第一张图像的缩略图，对于其他图像，它们不会被剪切。这是我的代码：

$source[0] = "image/catalog/a.jpg"; 
    $source[1] = "image/catalog/b.jpg"; 
    $source[2] = "image/catalog/c.jpg"; 


    foreach ($source as $image) { 
     $config['image_library'] = 'gd2'; 
     $config['source_image'] = $image; 
     $config['create_thumb'] = TRUE; 
     $config['maintain_ratio'] = TRUE; 
     $config['width'] = 100; 
     $config['height'] = 100; 

     $file = basename($image); 
     $info = pathinfo($file); 
     $file_name = basename($file,'.'.$info['extension']); 
     $config['new_image'] = '/Applications/XAMPP/xamppfiles/htdocs/zhiyuan/image/cache/' . basename($file_name) . '-' . $config['width'] . 'x' . $config['height'] . '.png'; 

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

Answer 1

问题是我试图加载库多次，但似乎它只会加载第一次。为了剪切第二个图像，我需要重新初始化配置。以下是修复后的代码：

$source[0] = "image/catalog/a.jpg"; 
$source[1] = "image/catalog/b.jpg"; 
$source[2] = "image/catalog/c.jpg"; 
$this->load->library('image_lib'); 

foreach ($source as $image) { 
    $config['image_library'] = 'gd2'; 
    $config['source_image'] = $image; 
    $config['create_thumb'] = TRUE; 
    $config['maintain_ratio'] = TRUE; 
    $config['width'] = 100; 
    $config['height'] = 100; 

    $file = basename($image); 
    $info = pathinfo($file); 
    $file_name = basename($file,'.'.$info['extension']); 
    $config['new_image'] = '/Applications/XAMPP/xamppfiles/htdocs/zhiyuan/image/cache/' . basename($file_name) . '-' . $config['width'] . 'x' . $config['height'] . '.png'; 

    $this->image_lib->initialize($config); 
    $this->image_lib->resize(); 
}