Image resize for Yii2
A Yii2 component for resizing images and store it in a cache folder, (*1)
Installation
The preferred way to install this extension is through composer., (*2)
php composer require "fgh151/yii2-image-resize" "*"
or add, (*3)
"fgh151/yii2-image-resize" : "*"
to the require section of your application's composer.json file., (*4)
- Add a new component in 
components section of your application's configuration file, for example: 
'components' => [
    'imageresize' => [
        'class' => 'fgh151\imageresize\ImageResize',
        //path web root 
        'cachePath' => '@frontend/web',
        //path where to store thumbs
        'cacheFolder' => 'upload/thumb',
        //use filename (seo friendly) for resized images else use a hash
        'useFilename' => true,
        //show full url (for example in case of a API)
        'absoluteUrl' => false,
    ],
],
Usage
If you want to get a image url:, (*5)
/*
 * $sImageFilePath_id: (required) path to file
 * $width/$height: (required) width height of the image
 * $mode: "outbound" or "inset" 
 * $$quality: (1 - 100)
 * $chosenFileName: if config -> components -> imageresize -> useFilename is true? its an option to give a custom name else use original file name
 */
\Yii::$app->imageresize->getUrl($imageFile, $width, $height, $mode, $quality, $chosenFileName);