后台往往需要导出各种数据到 Excel文档中。通常我们是导出 .csv文件格式，PHP导出函数参考代码如下：

/**

 * 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();

}

示例：

$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);