Yii2使用自带的UploadedFile实现的文件上传

<"file"], "file",],
];
}
}

<"options" => ["enctype" => "multipart/form-data"]]); "file")->fileInput() "htmlcode">

namespace backend\controllers;
use backend\models\Upload;
use yii\web\UploadedFile;
class ToolsController extends \yii\web\Controller
{
/**
* 文件上传
* 我们这里上传成功后把图片的地址进行返回
*/
public function actionUpload ()
{
$model = new Upload();
$uploadSuccessPath = "";
if (Yii::$app->request->isPost) {
$model->file = UploadedFile::getInstance($model, "file");
//文件上传存放的目录
$dir = "../../public/uploads/".date("Ymd");
if (!is_dir($dir))
mkdir($dir);
if ($model->validate()) {
//文件名
$fileName = date("HiiHsHis").$model->file->baseName . "." . $model->file->extension;
$dir = $dir."/". $fileName;
$model->file->saveAs($dir);
$uploadSuccessPath = "/uploads/".date("Ymd")."/".$fileName;
}
}
return $this->render("upload", [
"model" => $model,
"uploadSuccessPath" => $uploadSuccessPath,
]);
}
}


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