PHPExcel: Set Column Names fromArray using PHP array

Question

I'm using PHPExcel library to export data to excel. I'm able to get all the data to excel as expected. But how can I set the column names from PHP array. Here is the code I'm using. Please help

    $data=(
    array(10) (
      [0] => array(8) (
        [#] => (string)
        [Name] => (string) Student1
        [ID] => (string) 123456
        [Date] => (string) 2016-02-01
        [Group] => (string) Physics
        [Month] => (string) February
        [Year] => (string) 2016
      )
      [1] => array(8) (
        [#] => (string)
        [Name] => (string) Student2
        [ID] => (string) 569874
        [Date] => (string) 2016-02-01
        [Group] => (string) Biology
        [Month] => (string) February
        [Year] => (string) 2016......);

    $objPHPExcel = new PHPExcel();

    $objPHPExcel->setActiveSheetIndex(0);
    $objPHPExcel->getActiveSheet()->setCellValue('A1', "#");
    $objPHPExcel->getActiveSheet()->setCellValue('B1', "Name");
    $objPHPExcel->getActiveSheet()->setCellValue('C1', "ID");
    $objPHPExcel->getActiveSheet()->setCellValue('D1', "Date");
    $objPHPExcel->getActiveSheet()->setCellValue('E1', "Group");
    $objPHPExcel->getActiveSheet()->setCellValue('F1', "Month");
    $objPHPExcel->getActiveSheet()->setCellValue('G1', "Year");

//How to replace/make dynamic lines above to set Cell values in first row based on array data as column names. i.e Name, ID, Date,.....

//Add Data

$objPHPExcel->getActiveSheet()->fromArray($data,NULL,'A2');

Answer 1

// Header
$objPHPExcel->getActiveSheet()->fromArray(array_keys(current($data)), null, 'A1');
// Data
$objPHPExcel->getActiveSheet()->fromArray($data, null, 'A2');