Codeigniter uploads multiple files and creates multiple thumbnails

This article describes how to use Codeigniter to upload multiple files and create multiple thumbnails. For more information, see the CI framework.

This program can achieve:
1. Upload 5 images at the same time
2. generate two types of thumbnails at the same time
3. save to mysql

Controllers: upload. php file:

The code is as follows: Class Upload extends Controller {
Function go (){
If (isset ($ _ POST ['go']) {
// Initialization
$ Config ['upload _ path'] = 'Album/source ';
$ Config ['allowed _ types'] = 'gif | jpg | png | bmp | jpeg ';
$ Config ['encryption _ name'] = TRUE;
$ Config ['remove _ spaces'] = TRUE;
$ Config ['max _ size'] = '0 ';
$ Config ['max _ width'] = '0 ';
$ Config ['max _ height'] = '0 ';

$ This-> load-> library ('upload', $ config );

// 170*170 images
$ ConfigThumb = array ();
$ ConfigThumb ['image _ library'] = 'gd2 ';
$ ConfigThumb ['Source _ image'] = '';
$ ConfigThumb ['create _ thumb'] = TRUE;
$ ConfigThumb ['maintain _ ratio '] = TRUE; // preserve the image proportion
$ ConfigThumb ['new _ image'] = 'Album/thumb ';
$ ConfigThumb ['width'] = 170;
$ ConfigThumb ["height"] = 170;
// 600*600 images
$ ConfigLarge = array ();
$ ConfigLarge ['image _ library'] = 'gd2 ';
$ ConfigLarge ['Source _ image'] = '';
$ ConfigLarge ['create _ thumb'] = TRUE;
$ ConfigLarge ['maintain _ ratio '] = TRUE; // preserve the image proportion
$ ConfigLarge ['new _ image'] = 'Album/large ';
$ ConfigLarge ['width'] = 600;
$ ConfigLarge ['height'] = 600;

$ This-> load-> library ('image _ lib ');

For ($ I = 1; $ I <6; $ I ++ ){
$ Upload = $ this-> upload-> do_upload ('image'. $ I );
If ($ upload = FALSE) continue;
$ Data = $ this-> upload-> data (); // returns an array of all relevant information of the uploaded file.
$ Uid = $ this-> session-> userdata ('uid ');
$ UploadedFiles [$ I] = $ data;

If ($ data ['is _ image'] = 1 ){
// Initialize 170*170
$ ConfigThumb ['Source _ image'] = $ data ['full _ path']; // file path with file name
$ This-> image_lib-> initialize ($ configThumb );
$ This-> image_lib-> resize ();
// Initialize 600*600
$ ConfigLarge ['Source _ image'] = $ data ['full _ path']; // file path with file name
$ This-> image_lib-> initialize ($ configLarge );
$ This-> image_lib-> resize ();
}

// Insert the image information to the album table. the inserted file name is the source directory file name.
$ Picture = array (
'Filename' => $ data ['File _ name'],
'Albumid' => $ this-> uri-> segment ),
'Uid' => $ this-> session-> userdata ('uid '),
'Dateline '=> time (),
'Describe' => '',
'Click' => 0
);

$ This-> load-> model ('Album _ Model ');
$ This-> album_model-> AddPic ($ picture );
$ Picture = array ();
}
}

/* Transfer */
$ AlbumID = $ this-> uri-> segment (4 );
$ Backurl = site_url (). 'photo/editpic/album/'. $ albumID;
$ This-> session-> set_flashdata ('MSG ', 'image uploaded successfully .');
Redirect ($ backurl, 'refresh ');
}
}

Views: new_pic.view file:

The code is as follows:

Note the following:

1. to upload several files at a time, modify the parameters of the loop section in the form and controller.
2. album \ source is the Directory of the uploaded source image. large and thumb run $ this-> image_lib-> resize () twice.
3. if the thumbnail file name must be consistent with the album \ source directory, add the parameter $ config ['thumb _ marker'] = '';
4. $ picture this part of the array is saved to the database, you don't need to worry about it.