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当我裁剪图像时,它会变成完全黑色?为什么??Codeigniter - 裁剪图像变黑
$config['upload_path'] = $_SERVER['DOCUMENT_ROOT'].'/website/uploads/original/'; $config['allowed_types'] = 'gif|jpg|png|bmp|jpeg';
$this->load->library('upload'); $this->upload->initialize($config);
if(!$this->upload->do_upload()) { $error = array('error' => $this->upload->display_errors()); $this->load->view('submit', $error); } else { $data['upload_data'] = array('upload_data' => $this->upload->data()); $file_name
= $this->upload->file_name;
list($image_width, $image_height) = getimagesize($_SERVER['DOCUMENT_ROOT'].'/website/uploads/original/'.$file_name);
// create small size $config['image_library'] = 'GD2'; $config['source_image'] = $_SERVER['DOCUMENT_ROOT'].'/website/uploads/original/'.$file_name; $config['new_image'] = $_SERVER['DOCUMENT_ROOT'].'/website/uploads/small/'.$file_name; $config['maintain_ratio'] = TRUE; $config['width'] = 181; $config['height'] = 115; $config['master_dim'] = 'width';
$this->load->library('image_lib'); $this->image_lib->initialize($config);
if($image_width >= $config['width'] AND $image_height >= $config['height']) {
if (!$this->image_lib->resize())
{
echo $this->image_lib->display_errors();
} else {
if(file_exists($_SERVER['DOCUMENT_ROOT'].'/website/uploads/small/'.$file_name))
{
list($image_width, $image_height) = getimagesize($_SERVER['DOCUMENT_ROOT'].'/website/uploads/small/'.$file_name);
if($image_height > '115')
{
$config['source_image'] = $_SERVER['DOCUMENT_ROOT'].'/website/uploads/small/'.$file_name;
$y_axis = $image_height - 115;
$config['y_axis'] = $y_axis;
$config['x_axis'] = 181;
$this->image_lib->initialize($config);
if (!$this->image_lib->crop())
{
echo $this->image_lib->display_errors();
} else {
echo "cropped";
}
}
} } }
是的,我有,但仍然是相同的结果:(我打算使用图像魔术师,但从我读过它需要安装什么? – wonderwoman
是的,图像magick库需要安装,但它是很简单(有很多教程可以帮助),并且它更易于使用,我建议试试看吧。 –
呃,实际上它和GD2一起工作 - 只是想知道是否可以从顶部和底部进行裁剪不仅仅是顶部? – wonderwoman