/**

 * 导出数据到CSV文件

 *

 * @param array $data 二维数组（模拟数据表记录）

 * @param array $titleList 标题数组列表

 * @param string $fileName CSV文件名

 */

function csv_export(&$data, $titleList = array(), $fileName = '')

{

    ini_set("max_execution_time", "3600");

    $csvData = '';

    // 标题

    $nums = count($titleList);

    for ($i = 0; $i < $nums - 1; $i++)

    {

        $csvData .= '"' . $titleList[$i] . '",';

    }

    $csvData .= '"' . $titleList[$nums - 1] . "\"\r\n";

    foreach ($data as $key => $row)

    {

        $i = 0;

        foreach ($row as $_key => $_val)

        {

            $_val = str_replace("\"", "\"\"", $_val);

            if ($i < ($nums - 1))

            {

                $csvData .= '"' . $_val . '",';

            }

            elseif ($i == ($nums - 1))

            {

                $csvData .= '"' . $_val . "\"\r\n";

            }

            $i++;

        }

        unset($data[$key]);

    }

    $csvData = mb_convert_encoding($csvData, "cp936", "UTF-8");

    $fileName = empty($fileName) ? date('Y-m-d-H-i-s', time()) : $fileName;

    $fileName = $fileName . '.csv';

    header("Content-type:text/csv;");

    header("Content-Disposition:attachment;filename=" . $fileName);

    header('Cache-Control:must-revalidate,post-check=0,pre-check=0');

    header('Expires:0');

    header('Pragma:public');

    echo $csvData;

    die();

}

$data = array(

    array(

        'name' => 'jake',

        'score' => 80,

        'grade' => 'A'

    ),

    array(

        'name' => 'jin',

        'score' => 70,

        'grade' => 'A'

    ),

    array(

        'name' => 'john',

        'score' => 80,

        'grade' => 'A'

    ),

    array(

        'name' => 'ben3',

        'score' => 203,

        'grade' => 'B3'

    )

);

$titleList = array('姓名', '总分', '等级');

$fileName = '高三(3)班 7 月份考试结果';

csv_export($data, $titleList, $fileName);