php用jquery-ajax上传多张图片限制图片大小
/*** 上传图片，默认大小限制为3M* @param String $fileInputName* @param number $size*/public function processUpload($fileInputName,$size=3145728){$result = array('status'=>0, 'errcode'=>null, 'group'=>'', 'path'=>'', 'site'=>'', 'size'=>0);$file = $_FILES[$fileInputName];//用filesize函数获取文件大小,filesize这个内置函数不能直接放$fileInputName或者$file['name']，要用$file['tmp_name']，或者直接用$file['size']$bytes = $file['size'];if($bytes==0 || $bytes > $size){$result['status'] = -1;$result['size'] = $bytes;return $result;}$fileMIME = $file['type'];$originFilename = $file['name'];$tmpFileDir = C('FILE_UPLOAD_SWAP_DIR');$fileName = CommonUtil::generateUUid();switch ($fileMIME){case 'image/jpeg': //jpeg jpg jpe$tmpFile = $tmpFileDir.$fileName.'.jpg';break;case 'application/x-jpg':$tmpFile = $tmpFileDir.$fileName.'.jpg';break;default:$result['status'] = 1;$result['group'] = $tmpFileDir.$fileName;$result['site'] = $fileMIME;return $result;}//......}
上图是打印出来的$file属性 下面是控制器代码
/*** 上传多张图片公共方法* fileName 为input的name属性*/public function doUploadJpgMultiple(){$filename = I('get.fileName','');$uploader = new UploadJpgUtil();$result = $uploader->processUpload($filename);echo json_encode($result);}
下面是ajax代码
//一个页面上传多张图片function ajaxUploadMultiple(j) {$.ajaxFileUpload({url : base_url+"/UploadImgUtil/doUploadJpgMultiple?fileName=fileToUpload"+ j,secureuri : false,fileElementId : "fileToUpload"+ j,// file控件idtype: "POST",dataType: 'json',success : function(data, status) {if (typeof (data.status) != 'undefined') {if (data.status == -1) {alert('上传图片不能超过规定大小');}else if (data.status == 1) {alert('上传图片不是JPG格式');}else if (data.status != 0) {alert('status='+data.status + ' errcode=' + data.errcode);}else {var fileUrl = 'http://' + data.site + '/' + data.group+ '/' + data.path;$('#flatImgthumb'+ j).attr('src', fileUrl);$('#hidFlatImgthumb'+ j).val(data.group + '/' + data.path);}}},error : function(data, status, e) {alert(e);}});return false;}
