这是我的帖子控制器功能。我总是上传少于200x200
的图片,这些图片会存储在' 文件夹中。上传图片后,ID号将更改为4546464.png
。但我希望在上传后将图片尺寸更改为60x60
,并在将尺寸和质量更改为60x60x30
后将其存储。此代码上传很好但不会改变大小和质量。
public function actionCreate() {
$model = new Monitor();
if ($model->load(Yii::$app->request->post())) {
if ($model->payment_processor) {
$model->payment_processor = implode(',', $model>payment_processor);
}
$model->file = UploadedFile::getInstance($model, 'file');
if ($model->file != '') {
$model->image = time() . '.' . $model->file->extension;
}
$model->update_at = date('Y-m-d h:i:s');
$model->save();
if ($model->file != '') {
$model->file->saveAs('upload/' . $model->image);
}
return $this->redirect(['view', 'id' => $model->id]);
} else {
return $this->render('create', ['model' => $model]);
}
}
答案 0 :(得分:0)
,您必须先在服务器中上传图片,然后将其大小调整为您想要的尺寸,另一种方法是在您之前
$model->file->saveAs('upload/' . $model->image);
调整大小,但我建议您保存原始文件,然后将其作为副本调整大小。
这里是从中心调整大小和裁剪图像的功能:
public static function resize_crop_image($max_width, $max_height, $source_file, $dst_dir, $quality = 100){
$quality = 10;
$imgsize = getimagesize($source_file);
$width = $imgsize[0];
$height = $imgsize[1];
$mime = $imgsize['mime'];
switch($mime){
case 'image/gif':
$image_create = "imagecreatefromgif";
$image = "imagegif";
break;
case 'image/png':
$image_create = "imagecreatefrompng";
$image = "imagepng";
$quality = 9;
break;
case 'image/jpeg':
$image_create = "imagecreatefromjpeg";
$image = "imagejpeg";
$quality = 100;
break;
default:
return false;
break;
}
$dst_img = imagecreatetruecolor($max_width, $max_height);
$src_img = $image_create($source_file);
$width_new = $height * $max_width / $max_height;
$height_new = $width * $max_height / $max_width;
//if the new width is greater than the actual width of the image, then the height is too large and the rest cut off, or vice versa
if($width_new > $width){
//cut point by height
$h_point = (($height - $height_new) / 2);
//copy image
imagecopyresampled($dst_img, $src_img, 0, 0, 0, $h_point, $max_width, $max_height, $width, $height_new);
}else{
//cut point by width
$w_point = (($width - $width_new) / 2);
imagecopyresampled($dst_img, $src_img, 0, 0, $w_point, 0, $max_width, $max_height, $width_new, $height);
}
$image($dst_img, $dst_dir, $quality);
if($dst_img)imagedestroy($dst_img);
if($src_img)imagedestroy($src_img);
}
尽可能轻松地使用此功能:
yourModel::resize_crop_image(150,150, $path, 'upload/'.$name_you_want_or_random_string.'.jpg',$q);
$ path是上传的原始文件的路径。 您必须在Web应用程序目录中创建上传文件夹,或将目标更改为您想要的位置。
答案 1 :(得分:0)
我正在使用imageprocessor扩展程序,我对它非常满意。您只需要向图像处理器组件添加配置,并且在保存时您必须调用组件的save方法。它将根据您配置的尺寸创建新图像。它有一个很好的文档。试一试。