codeigniter image_lib問題？

Question

$this->load->library('image_lib'); 
if($imgWidth > $imgHeight){ 
    $img['image_library'] = 'gd2'; 
    $img['source_image'] = 'uploads/img/gallery/small/'.$photo; 
    $img['maintain_ratio'] = FALSE; 
    $img['x_axis'] = $imgWidth - $imgHeight; 
    $img['y_axis'] = 0; 
    $this->image_lib->initialize($img); 
    $this->image_lib->crop(); 
    echo $this->image_lib->display_errors(); 
} 
if($imgWidth < $imgHeight){ 
    $img['image_library'] = 'gd2'; 
    $img['source_image'] = 'uploads/img/gallery/small/'.$photo; 
    $img['create_thumb'] = TRUE; 
    $img['dinamic_output'] = TRUE; 
    $img['maintain_ratio'] = FALSE; 

    $img['x_axis'] = 0; 
    $img['y_axis'] = $imgHeight-$imgWidth; 
    $this->image_lib->initialize($img); 
    $this->image_lib->crop(); 

    echo $this->image_lib->display_errors(); 
} 
$img['image_library'] = 'gd2'; 
$img['source_image'] = 'uploads/img/gallery/small/'.$photo; 
$img['maintain_ratio'] = FALSE; 
$img['width'] = 80; 
$img['height'] = 80; 
$this->image_lib->initialize($img); 
$this->image_lib->resize(); 
echo $this->image_lib->display_errors(); 

爲什麼仍然不裁剪，但只能調整大小？ :(

它也不會返回任何錯誤：/

Answer 1

好了，我已經做了重構，給你一個更好的主意是怎麼回事我添加註釋來解釋我的變化。

private function getBaseImgArray($photo) 
{ 
    // you need this array three times. It should be extracted. 
    $ret = array(
     'image_library' => 'gd2', 
     'source_image' => 'uploads/img/gallery/small/'.$photo, 
     'maintain_ratio' => FALSE 
    ); 
    return $ret; 
} 

private function getCroppedImgArray($photo, $imgWidth, $imgHeight) 
{ 
    // this summarizes everything in your first two code blocks. 
    $img = $this->getBaseImgArray($photo); 
    $img[ 'x_axis' ] = ($imgWidth > $imgHeight)? $imgWidth - $imgHeight: 0; 
    $img[ 'y_axis' ] = ($imgWidth < $imgHeight)? $imgHeight - $imgWidth: 0; 
} 

public function yourFunctionNameHere() 
{ 
    $this->load->library('image_lib'); 
    $img = $this->getCroppedImgArray($photo, $imgWidth, $imgHeight); 

    // this is the only difference between the first and second img 
    // height/width blocks. Should it be there for both? 
    if($imgWidth < $imgHeight){ 
     $img['create_thumb'] = TRUE; 
    } 

    $this->image_lib->initialize($img); 
    $this->image_lib->crop(); 
    echo $this->image_lib->display_errors(); 

    // right here you're overwriting the above code. If your image library 
    // works as I would expect, then your cropped images will be cropped 
    // overwritten, and then re-sized. 
    $img = $this->getBaseImgArray($photo); 
    // on a technical note, you are using the same array when you resize, 
    // but since resize ignores the <x/y>_axis variables, it would not effect 
    // the final outcome. 
    $img['width'] = 80; 
    $img['height'] = 80; 
    $this->image_lib->initialize($img); 
    $this->image_lib->resize(); 
    echo $this->image_lib->display_errors(); 
}