huahuibao/app/mobile/controllers/UploadController.php

<?php
namespace mobile\controllers;
use Yii;
use yii\web\Controller;

class UploadController extends PublicController {

	public $withoutLogin = ['upload-file'];

	/**
	 * 上传图片文件
	 */
	public function actionUploadFile() {
		$fileInfo				= array('url' => '');
		if (! empty ( $_FILES )) {
			$tempFile			= $_FILES ['Filedata'] ['tmp_name'];
			$fileParts			= explode ( '.', $_FILES ["Filedata"] ['name'] );
			$fileName			= $fileParts [0];
			$extName			= $fileParts [1];
			$webRoot = Yii::getAlias('@webroot') . '/../../../resource/images/';
			$timeFolder			= '/uploads/' . date ( 'Ym', time () ) . '/'.date("d").'/';
			$targetFolder		= $timeFolder . strtolower($extName) . '/';
			$targetPath			= $webRoot . $targetFolder;
			if (! file_exists ( $webRoot . $timeFolder ))
				mkdir ( $webRoot . $timeFolder, 0777,true);
			if (! file_exists ( $webRoot . $targetFolder . '' ))
				mkdir ( $webRoot. $targetFolder,0777,true);
			$fileId				= md5( $fileName + rand () * 100000 );
			$targetFile			= rtrim ( $targetPath, '/' ) . '/' . $fileId . '.' . $extName;
			move_uploaded_file ( $tempFile, $targetFile );
			$fileInfo ['url']	= $targetFolder . $fileId . '.' . $extName;
		}
		echo json_encode($fileInfo);
	}

}