标签:php mysql codeigniter image-uploading gd2
我正在尝试使用Codeigniter创建一个简单的应用程序,我需要在MySql数据库中存储缩略图图像路径.图像以及缩略图版本在上传文件夹中正确上传,我可以在上传时将图像路径存储在我的数据库中,但我无法将缩略图图像路径存储在数据库中.我在控制器中试过这个:
$thumbnail= $this->resize($data['upload_data']['full_path'], $data['upload_data'] ['file_name']);
$thumbnail_path = './uploads/'. $thumbnail;
$newRow = array(
"title" => $this->input->post('title'),
"img_path" => $imgpath,
"thumbnail_path" => $thumbnail_path,
"post_body" => $this->input->post('post_body')
)
但它只在我的表格的thumbnail_path列中存储“./uploads/”,而不是实际的缩略图路径.我期望它存储类似“./uploads/Lighthouse_thumb.jpg”的东西.我无法弄清楚如何获取缩略图图像的路径以将它们存储在数据库中.这是我的完整上传控制器:
class Upload extends CI_Controller
{
function __construct()
{
parent::__construct();
$this->load->helper('form');
}
function index() {
$this->load->view('upload_form', array('error'=>''));
}
function do_upload() {
$config['upload_path'] = './uploads/';
$config['allowed_types'] = 'gif|jpg|png';
$config['max_size'] = '1000';
$config['max_width'] = '1024';
$config['max_height'] = '768';
$this->load->library('upload', $config);
if (!$this->upload->do_upload()) {
$error = array('error' => $this->upload->display_errors());
$this->load->view('upload_form', $error);
} else {
$image_data = $this->upload->data();
$imgpath = './uploads/' . $image_data['file_name'];
$data = array('upload_data'=>$this->upload->data());
$thumbnail= $this->resize($data['upload_data']['full_path'], $data['upload_data']['file_name']);
$thumbnail_path = './uploads/'. $thumbnail;
$newRow = array(
"title" => $this->input->post('title'),
"img_path" => $imgpath,
"thumbnail_path" => $thumbnail_path,
"post_body" => $this->input->post('post_body')
);
$this->load->model('postimage_path');
$this->postimage_path->insert($newRow);
$this->load->view('upload_success', $data);
}
}
function resize($path, $file) {
$config['image_library'] = 'gd2';
$config['source_image'] = $path;
$config['create_thumb'] = TRUE;
$config['maintian_ratio'] = TRUE;
$config['width'] = 100;
$config['height'] = 100;
$config['new_image'] = './uploads/' . $file;
$this->load->library('image_lib', $config);
$this->image_lib->resize();
}
}
解决方法:
$thumbnail_path = './uploads/'. $thumbnail;
所以thumbnail_path只包含“./uploads/”:告诉我们$thumbnail是false(或者是null或空字符串等),这意味着调用resize的返回值是错误的 – 似乎你希望它返回文件名.
function resize($path, $file) {
$config['image_library'] = 'gd2';
$config['source_image'] = $path;
$config['create_thumb'] = TRUE;
$config['maintian_ratio'] = TRUE;
$config['width'] = 100;
$config['height'] = 100;
$config['new_image'] = './uploads/' . $file;
$this->load->library('image_lib', $config);
$this->image_lib->resize();
}
resize什么都不返回!并且你没有为$thumbnail_path分配任何内容.那是你的问题.
你似乎只是复制了the CodeIgniter docs的代码.来自所说的文件(强调我的):
The above code tells the image_resize function to look for an image called mypic.jpg located in the source_image folder, then create a thumbnail that is 75 X 50 pixels using the GD2 image_library. Since the maintain_ratio option is enabled, the thumb will be as close to the target width and height as possible while preserving the original aspect ratio. The thumbnail will be called mypic_thumb.jpg
所以你有它!如果您的文件名是$data [‘upload_data’] [‘file_name’],那么您的缩略图将是$data [‘upload_data’] [‘file_name’]. “_拇指”.看看你的文件系统,文件应该在那里供你查看.
所以要解决你的问题,这应该可以解决问题:
$pathinfo = pathinfo($data['upload_data']['file_name']);
$thumbnail_path = './uploads/'. $data['upload_data']['file_name'] . "_thumb" . $pathinfo['extension'];
标签:php,mysql,codeigniter,image-uploading,gd2 来源: https://codeday.me/bug/20190708/1402526.html
本站声明: 1. iCode9 技术分享网(下文简称本站)提供的所有内容,仅供技术学习、探讨和分享; 2. 关于本站的所有留言、评论、转载及引用,纯属内容发起人的个人观点,与本站观点和立场无关; 3. 关于本站的所有言论和文字,纯属内容发起人的个人观点,与本站观点和立场无关; 4. 本站文章均是网友提供,不完全保证技术分享内容的完整性、准确性、时效性、风险性和版权归属;如您发现该文章侵犯了您的权益,可联系我们第一时间进行删除; 5. 本站为非盈利性的个人网站,所有内容不会用来进行牟利,也不会利用任何形式的广告来间接获益,纯粹是为了广大技术爱好者提供技术内容和技术思想的分享性交流网站。