Yii Method for uploading images and generating thumbnails _ php instance

This article mainly introduces how yii implements Image Upload and thumbnail generation. It analyzes in detail the principles and implementation methods of Image Upload and thumbnail generation, and is a very practical technique, for more information about how to use the yii framework to upload images and automatically generate thumbnails after successful uploads. The specific implementation method is as follows:

Action file:

The Code is as follows:

<? Php
/**
* TestController. php
* Created on: 12:59:36 by Outsider
*/
Class TestController extends CController {

/**
* Create a thumbnail
* @ Path: Image path
* @ Width: Image width
* @ Height the Image height
*/
Public function actionGetThumb ($ path, $ w, $ h ){
$ File_name = md5 ($ path. $ w. $ h );
If (file_exists ('./temp/'. $ file_name. '.jpg ')){
Header ('location:/temp/'. $ file_name. '.jpg ');
Yii: app ()-> end ();
}
Yii: import ("ext. EPhpThumb. EPhpThumb ");
$ Thumb = new EPhpThumb ();
$ Thumb-> init ();
$ Thumb-> create ('.'. $ path)
-> AdaptiveResize ($ w, $ h)
-> Save ('./temp/'. $ file_name. '.jpg ')
-> Show ();
}

/*
* Image Display
*/

Public function actionList (){
$ Attache = Attache: model ();
$ List = $ attache-> findAll ();
$ This-> render ('LIST', array ('LIST' => $ list ));
Die;
}

/**
* File Upload
*/
Public function actionIndex (){
$ Path = getcwd (). 'uploads ';
$ Dir = DIRECTORY_SEPARATOR. date ('y'). DIRECTORY_SEPARATOR. date ('M ');
$ Dir = str_replace ("\", "/", $ dir );
$ Uploads_dir = str_replace ("\", "/", $ path. $ dir );
If (! Is_dir ($ uploads_dir) |! Is_writeable ($ uploads_dir )){
Mkdir ($ uploads_dir, 0777, TRUE );
Touch ($ uploads_dir. '/index.html ');
}
$ Uploaded = false;
$ Model = new Upload ();
If (isset ($ _ POST ['upload']) {
$ Model-> attributes = $ _ POST ['upload'];
$ File = CUploadedFile: getInstance ($ model, 'file ');
$ NewName = substr (md5 ($ file-> extensionName. round (microtime (true) * 1000), 0, 17 ). '. '. $ file-> extensionName;
$ File_name = $ uploads_dir. '/'. $ newName;
If ($ model-> validate ()){
$ Attache = new Attache ();
$ Uploaded = $ file-> saveAs ($ file_name, TRUE );
$ Attache-> name = $ file-> getName ();
$ Attache-> path = $ dir. '/'. $ newName;
$ Attache-> create_time = time ();
$ Attache-> save ();
}
}

$ This-> render ('index', array (
'Model' => $ model,
'Uploaded' => $ uploaded,
'Dir' => $ uploads_dir,
));
}
}

Upload. php:

The Code is as follows:

<? Php
Class Upload extends CFormModel {

Public $ file;

Public function rules (){
Return array (
Array ('file', 'file', 'types' => 'jpg, gif, png, zip '),
);
}
}

Image Display page:

Custom image size, automatically generated by thumbnails

The Code is as follows:

<? Php
/**
* List. php
* Created on: 13:12:01 by Outsider
*/
?>
<? Php foreach ($ list as $ v):?>
CreateUrl ('test/getthumb', array ('path' => '/uploads '. $ v ['path'], 'w' => '000000', 'H' => '000000')?> ">
<? Php endforeach;?>

Image Upload form:

The Code is as follows:

<? Php if ($ uploaded):?>

File was uploaded. Check <? Php echo $ dir?>.

<? Php endif?>
<? Php echo CHtml: beginForm ('', 'post', array
('Enabledype '=> 'multipart/form-data')?>
<? Php echo CHtml: error ($ model, 'file')?>
<? Php echo CHtml: activeFileField ($ model, 'file')?>
<? Php echo CHtml: submitButton ('upload')?>
<? Php echo CHtml: endForm ()?>

I hope this article will help you design PHP programs based on the Yii framework.