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 public function newName($name){    //获取文件后缀名    $extension = substr($name,strrpos($name,"."));    //当前时间转化为毫秒----microtime    $md5 = md5(microtime().rand(10000,1000000)); $fileName="./Up...

1、单个文件上传首先建立一个模型models/UploadForm.php,内容如下namespace app\models;use yii\base\Model;use yii\web\UploadedFile;/** * UploadForm is the model behind the upload form. */class UploadForm extends Mode...