如何通過yii2中的想像擴展來調整圖像大小

我使用波紋管函數在上傳後調整圖像大小以顯示在我的帖子上。，但它只適用於大於500像素300像素的圖像。當我上傳比這個尺寸更小的圖片時，我的網站圖片行發生故障。如何通過yii2中的想像擴展來調整圖像大小

use yii\imagine\Image;  
public function upload() { 
      $this->pictureFile->saveAs('../files/upload/' . $this->pictureFile->baseName . '.' . $this->pictureFile->extension); 

      Image::thumbnail('../files/upload/' . $this->pictureFile, 500, 300) 
        ->save('../files/upload/thumbnail-500x300/' . $this->pictureFile->baseName . '.' . $this->pictureFile->extension, 
          ['quality' => 70]); 
      unlink('../files/upload/' . $this->pictureFile->baseName . '.' . $this->pictureFile->extension); 
     }

來源

2016-03-15 Mohammad Aghayari

先給模式屬性的縮略圖。 'Image :: thumbnail（'../ files/upload /'。$ this-> pictureFile，500，300，\ Imagine \ Image \ ManipulatorInterface :: THUMBNAIL_INSET）' –

此代碼對於小於500像素的圖像無效300px ， –

如何將小圖像調整爲500px 300px？ –

使用大小調整方法如下

use yii\imagine\Image; 
use Imagine\Image\Box; 

public function upload() { 
     $this->pictureFile->saveAs('../files/upload/' . $this->pictureFile->baseName . '.' . $this->pictureFile->extension); 

     Image::thumbnail('../files/upload/' . $this->pictureFile, 500, 300) 
       ->resize(new Box(500,300)) 
       ->save('../files/upload/thumbnail-500x300/' . $this->pictureFile->baseName . '.' . $this->pictureFile->extension, 
         ['quality' => 70]); 
     unlink('../files/upload/' . $this->pictureFile->baseName . '.' . $this->pictureFile->extension); 
    }

來源

2016-03-15 11:55:37

非常感謝。這是非常有用的 –

請問你可以投票嗎？我問題禁令:-( –

相反的Image::thumbnail，請嘗試以下

$imagine = Image::getImagine(); 
$image = $imagine->open('../files/upload/' . $this->pictureFile); 
$image->resize(new Box(500, 300))->save('../files/upload/thumbnail-500x300/' . $this->pictureFile->baseName . '.' . $this->pictureFile->extension, ['quality' => 70]);

沒有測試它，但由於警予的Image是隻是一個包裝過Imagine庫，這應該有輕微的變化工作（如果有的話需要）。

是的，你需要在您的文件use Imagine\Image\Box;之前使用上面的代碼。

來源

2016-03-15 11:42:19 yetanotherse

Yii::setAlias('newsfolder', dirname(dirname(__DIR__)) . '/frontend/web/extraimages/'); 

    $model->img = UploadedFile::getInstance($model,'img'); 
    if (!empty($model->img)){ 
     $model->img->saveAs(Yii::getAlias('@newsfolder/').$filename.'.'.$model->img->extension); 
     $model->img = $filename.'.'.$model->img->extension; 
     $imagine = Image::getImagine(); 
     $image = $imagine->open(Yii::getAlias('@newsfolder/'.$model->img)); 
     $image->resize(new Box(500, 300))->save(Yii::getAlias('@newsfolder/'.$model->img, ['quality' => 70])); 
    }

來源

2017-08-01 11:53:06

$imagine = Image::getImagine(); 
     $imagine = $imagine->open($openPath); 
     $sizes = getimagesize ($openPath); 
     /*     
      [0] => 604 
      [1] => 244 
      [2] => 3 
      [3] => width="604" height="244" 
      [bits] => 8 
      [mime] => image/png 
     ) */ 
     $width = 200; 
     $height = round($sizes[1]*$width/$sizes[0]);   
     $imagine = $imagine->resize(new Box($width, $height))->save($savePath, ['quality' => 60]);

來源

2017-11-10 06:51:45

如何通過yii2中的想像擴展來調整圖像大小

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