Use ThinkPHP to generate thumbnails and display, and thinkphp to generate thumbnails.
Using ThinkPHP to generate thumbnails and display are of reference value. For more information, see
First, understand some functions in the parent class Image. class. php (ThinkPHP/Library/Think/Image. class. php ).
1: open () open the processed image
2: Create a thumbnail of thumb () by default, and scale proportionally to 1 (for meanings of 2, 3, 4, 5, and 6, see the parent class file Image. class. php)
3: save () thumbnails to the server
To generate a thumbnail, follow these steps:
* 1. instantiation
* 2. open the image open ()
* 3. Generate the default proportional scaling of the thumbnail thumb ()
* 4. save ()
Controller code:
// Large image path (for details about the large image path, refer to the upload path for "using ThinkPHP to upload attachments" in the previous article) $ bigimg_path = $ upload-> rootPath. $ file_info ['savepath']. $ file_info ['savename']; // the path of the thumbnail $ smallimg_path = $ upload-> rootPath. $ file_info ['savepath']. 'Small _'. $ file_info ['savename']; $ img = new \ Think \ Image (); // instantiate $ img-> open ($ bigimg_path ); // open the processed image $ img-> thumb (100,100); // create a thumbnail (100*100) $ img-> save ($ smallimg_path ); // Save the thumbnail to the server // Save the uploaded attachment and thumbnail to the database $ _ POST ['goods _ big_img '] = $ bigimg_path; $ _ POST ['goods _ small_img '] = $ smallimg_path;
Constant set in the entry file
For the convenience of displaying the thumbnail path on the foreground, set a constant in index. php of the entrance file, indicating the site path, and splice it with the image path stored in the database
Define ('site _ url', 'HTTP: // www.tp.com/TP/shop /');
Big image and thumbnail displayed on the front-end
<Td> <! -- Big chart --> < {$ v. goods_big_img}> "height =" 60 "width =" 60 "> </td> <! -- Thumbnail --> < {$ v. goods_small_img}> "height =" 40 "width =" 40 "> </td>
Result
Database storage path
Image
Front-end display
The above is all the content of this article. I hope it will be helpful for your learning and support for helping customers.