php实现下载模板与上传模板解析

<?
//下载模板的请求
if(isset($_GET[\'action\']) && $_GET[\'action\'] ==\'down_group_excel\'){
    $code = down_excel_templates(\'t_group\');
}

//下载excel模板
function down_excel_templates($type = \'t_group_member\'){
    if(strcasecmp($type, \'t_group_member\') === 0){
        $filename = \'student模板\';
    }else{
        $filename = \'group模板\';
    }
    header("Content-type:application/vnd.ms-excel");
    header("Content-Disposition:filename=".$filename.".xls");
    $data = get_execl_template($type);
    $strexport = \'\';
    foreach($data AS $v){
        $strexport .= $v . "\t";
    }
    $strexport=iconv(\'UTF-8\',"GB2312//IGNORE",$strexport);
    exit($strexport);
}

//获取模板数据
function get_execl_template($type = \'t_group_member\'){
    $data = [
        \'t_group_member\' => [
            \'student_id\' => \'学号\', //key对应数据表wp_t_group_member的字段
            \'user_name\'  => \'姓名\',
            \'pinyin\'     => \'拼音\',
            \'user_email\' => \'邮箱\',
            \'group_name\' => \'组织名称\',
            \'role\'       => \'角色(填学生*或讲师)\'
        ],
        \'t_group\' => [
            \'group_name\' => \'开课班名\', //key对应数据表wp_t_group的字段
            \'org_name\'   => \'组织名\',
            \'course_name\'=> \'课程名\',
            \'start_time\' => \'开始时间\',
            \'end_time\'   => \'结束时间\',
        ],
    ];
    if(!array_key_exists($type, $data)){
        //key不存在
        $type = \'t_group_member\';
    }
    return $data[$type];
}


//上传文件的请求
if(isset($_POST[\'action\']) && $_POST[\'action\'] ==\'import_group\'){
    import_excel(\'group\');
}
/**
 * 验证上传的文件
 * @param FILES $filename; $_FILES
 * @param FILES $tmp_name; $_FILES
 * @param string $type; 二级目录
 * @param string $root_path; 指定目录
 **/
function validate_upload_file($filename, $tmp_name, $type = \'excel\', $root_path = \'\' ){
    if(!$filename || !$tmp_name){
        return false;
    }
    //判断文件格式
    $path_parts = pathinfo($filename);
    $extension = strtolower($path_parts[\'extension\']) ;
    if ( !in_array($extension, array(\'xls\',\'xlsx\'))) {
        echo json_encode( [\'code\' => 1, \'msg\' => "文件格式不正确,请重新选择" ]);exit;
    }
    //判断目录是否指定，不指定为默认
    $type = \'excel\';
    if(!$root_path) {
        $root_path = "./upload/$type/" . date(\'Y-m-d\', time()) . "/";
    }
    //检查文件或目录是否存在
    if(!file_exists($root_path)) {
        @mkdir($root_path,0777,true);
        @chmod($root_path,0777);
    }
    //上传后的文件名
    $rand_name = substr(md5(rand(10,99)), 0,4) ;
    $name = date(\'YmdHis\').$rand_name.\'.\'.$extension ;
    $real_file  = $root_path.$name;  //上传后的文件名地址
    //移动上传文件
    $result = move_uploaded_file($tmp_name, $real_file);
    return [\'name\' => $name, \'real_file\' => $real_file, \'result\' => $result];
}
/**
 * 导入数据
 * @param string $name <input>控件的名称
 * @param string $type; 二级目录
 * @param string $root_path; 指定目录
 **/
function import_excel($name = \'\', $type = \'excel\', $root_path = \'\'){
    if($_FILES && isset($_FILES[$name][\'name\'])){
        $filename = $_FILES[$name][\'name\'];
        $tmp_name = $_FILES[$name][\'tmp_name\'];
        //验证文件并导入
        $table = \'t_group_member\';
        if(strcasecmp($name,\'group\') === 0){
            $table = \'t_group\';
        }
        $result = importdata( $filename, $tmp_name,$table, $type, $root_path);
        if(is_array($result)){
            echo json_encode([\'code\' => 1,\'data\' => $result, \'msg\' => \'有部分上传失败!详情按F12查看\']);exit;
        }
        echo json_encode([\'code\' => 0, \'msg\' => \'success\']);exit;
    }else{
        echo json_encode([\'code\' => 1, \'msg\' => \'请选择文件!\']);exit;
    }
}

/**
 * 验证上传的文件
 * @param FILES $filename; $_FILES
 * @param FILES $tmp_name; $_FILES
 * @param string $type; 二级目录
 * @param string $root_path; 指定目录
 **/
function importdata ($filename, $tmp_name ,$table = \'\',$type = \'excel\', $root_path = \'\') {
    //设置超时时间
    set_time_limit(0);
    //引入phpexcel
    require_once(__LIB__ . "PHPExcel/Classes/PHPExcel.php");
    require_once(__LIB__ . "PHPExcel/Classes/PHPExcel/IOFactory.php");
    require_once(__LIB__ . "PHPExcel/Classes/PHPExcel/Reader/Excel5.php");
    //验证
    $msg = [];
    $data = validate_upload_file( $filename, $tmp_name ,$type, $root_path);
    $result = $data[\'result\'];
    $real_file = $data[\'real_file\'];
    if ( $result ) {
        $PHPExcel = new PHPExcel() ;
        $PHPReader = new PHPExcel_Reader_Excel2007();
        if( !$PHPReader->canRead($real_file) ){
            $PHPReader = new PHPExcel_Reader_Excel5();
            if( !$PHPReader->canRead( $real_file ) ){
                echo json_encode( [\'code\' => 1, \'msg\' => "文件不可读,请重新选择" ]);exit;
            }
        }
        $_excelData = array() ;
        //读取excel
        $PHPExcel = $PHPReader->load( $real_file );
        //获取工作表的数目
        $sheet_count = $PHPExcel->getSheetCount();
        for ( $i = 0; $i < $sheet_count; $i++ ) {
            $_currentSheet = $PHPExcel->getSheet( $i ) ;
            $_allRow = $_currentSheet->getHighestRow(); //获取Excel中信息的行数
            $_allColumn = $_currentSheet->getHighestColumn();//获取Excel的列数
            $highestRow = intval( $_allRow ) ;
            $highestColumn = PHPExcel_Cell::columnIndexFromString($_allColumn);//有效总列数
            $field = array_keys(get_execl_template($table)); //获取模板的字段顺序
            for( $row = 2; $row <= $highestRow; $row++ ) {
                for ($col = 0; $col < count($field); $col++) { //列只获取模板的字段个数
                    $_excelData[$field[$col]] = $_currentSheet->getCellByColumnAndRow($col, $row)->getValue();
                }
                if (empty($_excelData)) {
                    $msg[] = array(\'s_type\' => "导入失败", \'do_content\' => $filename . " 下 Sheet" . ($i + 1) . " 中第 " . $row . " 行导入失败", \'do_time\' => date("Y-m-d H:i:s"));
                    unset($_excelData);
                    continue;
                }
                if ($_excelData) {
                    //插入数据库
                    $code = insert_table($table, $_excelData);
                    if($code !== true){
                        $msg[] = array(\'s_type\' => "插入失败", \'do_content\' => $filename . " 下 Sheet" . ($i + 1) . " 中第 " . $row . " 行插入失败：".$code, \'do_time\' => date("Y-m-d H:i:s"));
                    };
                }
                unset($_excelData);
            }
        }
        if($msg) {
            return $msg;
        }
    }else{
        echo json_encode( [\'code\' => 1, \'msg\' => "文件上传失败,请重新选择" ]);exit;
    }
}

/**
 * 将数据添加到对应的表中
 * @param string $table ; 数据表名
 * @param array  $data  ; 添加的数据
 * @return string true添加成功,其他是错误信息
**/
function  insert_table($table = \'\', $data = []){
    global $db;
    if(!$table || !$data || !is_array($data)){
        return false;
    }
    //验证是否数据正确
    switch($table){
        case \'t_group_member\':
            //验证t_group_member模板的数据，然后保存
           //出错可根据需要，是否还继续。不继续 return \'错误信息\';
            break;
        case \'t_group\':
             //验证t_group模板的数据，然后保存
            break;
            default:
            return \'没有该模板的数据!\';
          break;
    }
    return true;
}