我认为此功能没有应有的效率。我很感激一些关于如何将其构建得更快并占用更少内存的建议。这就是代码的作用：
- 检查图像是否已上传
- 将有关它的详细信息（标签、名称、详细信息）添加到数据库
- 如果设置了变量 $orientation，则旋转图像
- 如果图像宽于 600 像素，请调整其大小
- 创建缩略图
我认为效率低下的原因在于将步骤 3、4、5 全部分开。有什么方法可以巩固它们吗？谢谢！
function insert()
{
$config['upload_path'] = './uploads/';
$config['allowed_types'] = 'jpg';
$config['max_size'] = '5000';
$config['max_width'] = '4096';
$config['max_height'] = '4096';
$this->load->library('upload', $config);
if (!$this->upload->do_upload())
{
$data = array('error' => $this->upload->display_errors());
$data['title'] = "Add Photo | Mark The Dark";
$this->load->view('photo_add_view', $data);
}
else
{
//get uploaded image info
$data = array('upload_data' => $this->upload->data());
//clean the data
$data = $this->input->xss_clean($data);
//get orientation info and erase it from POST variable
//$orientation = $_POST['orientation'];
//unset($_POST['orientation']);
//grab the tags
$tags = $_POST['tags'];
unset($_POST['tags']);
//add in some other stuff
$_POST['time'] = date('YmdHis');
$_POST['author'] = $this->dx_auth->get_user_id();
//insert it in the database
$this->db->insert('photos', $_POST);
$photo_id = $this->db->insert_id();
//add stuff to tags table
/*
$tags_array = preg_split('/[\s,;]+/', $tags);
foreach($tags_array as $tag)
{
if($tag != "" || $tag != null)
$this->db->insert('tags', array('id' => $photo_id, 'word' => $tag));
}*/
//CXtags
/*$tags_array = preg_split('/[\s,;]+/', $tags);
foreach($tags_array as $tag)
{
if($tag == "" || $tag == null)
{unset($tags_array[$tag]);}
}
*/
$tags_array = $this->CXTags->comma_to_array($tags);
foreach($tags_array as $tag)
{$tags_array[$tag] = $this->CXTags->make_safe_tag($tag);}
$topass = array(
'table' => 'photos',
'tags' => $tags_array,
'row_id' => $photo_id,
'user_id' => $_POST['author']
);
$this->CXTags->add_tags($topass);
//rename the file to the id of the record in the database
rename("./uploads/" . $data['upload_data']['file_name'], "./uploads/" . $photo_id . ".jpg");
list($width, $height, $type, $attr) = getimagesize("./uploads/" . $photo_id . '.jpg');
if (($orientation == 1) || ($orientation == 2))
{
//echo $orientation;
//rotate image
$config['image_library'] = 'GD2';
$config['source_image'] = './uploads/' . $photo_id . '.jpg';
if ($orientation == 1)
{
$config['rotation_angle'] = 270;
}
elseif ($orientation == 2)
{
$config['rotation_angle'] = 90;
}
$this->load->library('image_lib', $config);
$this->image_lib->initialize($config);
if(!$this->image_lib->rotate())
{
echo $this->image_lib->display_errors();
}
}
$this->load->library('image_lib');
if ($width > 600)
{
//resize image
$config['image_library'] = 'GD2';
$config['source_image'] = './uploads/' . $photo_id . '.jpg';
$config['new_image'] = './uploads/photos/' . $photo_id . '.jpg';
$config['create_thumb'] = FALSE;
$config['maintain_ratio'] = TRUE;
$config['width'] = 600;//180
$config['height'] = 480;
$config['master_dim'] = 'width';
$this->image_lib->initialize($config);
$this->load->library('image_lib', $config);
if(!$this->image_lib->resize())
{
echo $this->image_lib->display_errors();
}
}
else
{
$source = './uploads/' . $photo_id . '.jpg';
$destination = './uploads/photos/' . $photo_id . '.jpg';
rename($source, $destination);
/*//buggy php???
$result = copy($source, $destination);
echo "HO" . $result;
*/
}
//create thumbnail
$config['image_library'] = 'GD2';
$config['source_image'] = './uploads/photos/' . $photo_id . '.jpg';
$config['new_image'] = './uploads/thumbnails/' . $photo_id . '.jpg';
$config['create_thumb'] = TRUE;
$config['thumb_marker'] = '_thumb';
$config['maintain_ratio'] = TRUE;
$config['width'] = 180;//180
$config['height'] = 100;
$config['master_dim'] = 'width';
$this->image_lib->initialize($config);
$this->load->library('image_lib', $config);
$this->image_lib->resize();
redirect('photo/show/' . $photo_id);
}
//redirect('photo/photo_add/');
}