请帮我解决将大数据导出为excel格式xlsx的问题。 我每次导出几乎45000条记录到单个文件,并且超时而不保存文件。 mysql选择查询需要21秒来执行该大数据。以下是我使用PHP Excel库将数据导出到Excel文件的代码。PHPExcel超时发生
$sql2 = "SELECT * FROM Surveys";
$result2 = mysql_query($sql2);
while($row2 = mysql_fetch_assoc($result2))
{
$j=$rowscounter+2;
$sheet->setCellValue("A$j",$row2['brandname']);
$sheet->setCellValue("B$j",$row2['productname']);
$sheet->setCellValue("C$j",$row2['sname']);
$sheet->setCellValue("D$j",$row2['smobile']);
$sheet->setCellValue("E$j",$row2['semail']);
$sheet->setCellValue("F$j",$row2['country']);
$sheet->setCellValue("G$j",$row2['city']);
$sheet->setCellValue("H$j",$row2['sdob']);
$sheet->setCellValue("I$j",$row2['age']);
$sheet->setCellValue("J$j",$row2['comment']);
$sheet->setCellValue("K$j",$row2['outletcode']);
$sheet->setCellValue("L$j",$row2['username']);
$sheet->setCellValue("M$j",$row2['datetime']);
$sheet->setCellValue("N$j",$row2['duration']);
$rowscounter++;
}
// Rename worksheet
$sheet->setTitle('Survey-Report');
$objPHPExcel->setActiveSheetIndex(0);
$objWriter = PHPExcel_IOFactory::createWriter($objPHPExcel, 'Excel2007');
$objWriter->setPreCalculateFormulas(false);
unlink("Survey-Report.xlsx");
$objWriter->save('Survey-Report.xlsx');
echo "ok";
UPDATE:
我忘了提,我已经尝试过set_timout等,并在我的PHP文件下面的代码中写道。
set_time_limit(0);
ini_set('memory_limit','2500M');
php.ini中有一个变量用于为php脚本执行设置超时值[1]。如果你碰到那可能解决你的问题。 [1]:http://php.net/manual/en/function.set-time-limit.php – 2013-04-26 15:32:55