记录一笔关于PHPEXCEL导出大数据超时和内存溢出的问题

<?php
set_time_limit(0);
header("Content-Type:text/html;charset=utf-8");
define('EOL', '<br />');
define('CURSCRIPT', 'shell');
define('WEB',dirname(__FILE__).DIRECTORY_SEPARATOR);
define ( 'ROOT_PATH', dirname (WEB) . DIRECTORY_SEPARATOR . 'application' . DIRECTORY_SEPARATOR );
define ( 'FRAMEWORK_PATH', substr ( ROOT_PATH, 0, - 12 ) . 'jcphp' . DIRECTORY_SEPARATOR );
define ( 'WXSERVER_PATH', dirname (WEB) . DIRECTORY_SEPARATOR . 'wwwroot' . DIRECTORY_SEPARATOR.'wxserver'.DIRECTORY_SEPARATOR);
require FRAMEWORK_PATH . './class/class_core.php';
class_core::instance (false);
$rootexcel ='Classes/PHPExcel.php';
require_once($rootexcel);
$column_number = 14;
$objPHPExcel = new PHPExcel();// 创建一个处理对象实例
$objActSheet = $objPHPExcel->getActiveSheet();
ini_set("memory_limit", "1024M"); // 设置php可使用内存
$cacheMethod = PHPExcel_CachedObjectStorageFactory::cache_in_memory_gzip;
if (!PHPExcel_Settings::setCacheStorageMethod($cacheMethod)) {
die($cacheMethod . " 缓存方法不可用" . EOL);
}
echo date('H:i:s'), " 当前使用的缓存方法是： ", $cacheMethod, " 方式", EOL;
echo date('H:i:s'), " 开始设置文档属性", EOL;
$objPHPExcel->getProperties()->setCreator("Maarten Balliauw")
->setLastModifiedBy("Maarten Balliauw")
->setTitle("Office 2007 XLSX Test Document")
->setSubject("Office 2007 XLSX Test Document")
->setDescription("Test document for Office 2007 XLSX, generated using PHP classes.")
->setKeywords("office 2007 openxml php")
->setCategory("Test result file");

echo date('H:i:s'), " 开始添加单元格标题", EOL;
$objPHPExcel->setActiveSheetIndex(0);
$title = '学员数据';
//设置表格标题
$objActSheet->setCellValue('A1', $title);
//设置字体大小
$objActSheet->getStyle('A1')->getFont()->setName('宋体');
$objActSheet->getStyle('A1')->getFont()->setSize(40);
$objActSheet->getStyle('A1')->getFont()->setBold(true);
//合并标题单元格
$objActSheet->getStyle('B2')->getAlignment()->applyFromArray(
array(
'horizontal' => PHPExcel_Style_Alignment::HORIZONTAL_CENTER,
'vertical' => PHPExcel_Style_Alignment::VERTICAL_CENTER,
'rotation' => 0,
'wrap' => true
) );
$styleArray1 = array(
'font' => array(
'bold' => true,
'size'=>12,
'color'=>array(
'argb' => '00000000',
),
),
'alignment' => array(
'horizontal' => PHPExcel_Style_Alignment::HORIZONTAL_CENTER,
),
);
$styleArray2 = array(
'font' => array(
'bold' => true,
'size'=>12,
'color'=>array(
'argb' => '00000000',
),
),
'alignment' => array(
'horizontal' => PHPExcel_Style_Alignment::HORIZONTAL_CENTER,
),
);
$arr=array('A','B','C','D','E','F','G','H','I','J','K','L','M','N');
// 将A1单元格设置为加粗，居中
$objPHPExcel->getActiveSheet()->getStyle('A1')->applyFromArray($styleArray1);
$objActSheet->mergeCells( 'A1:'.chr(ord('A')+$column_number-1).'1');//合并标题
$objActSheet->setCellValue('A2', '编号');
$objActSheet->setCellValue('B2', '学员姓名');
$objActSheet->setCellValue('C2', '性别');
$objActSheet->setCellValue('D2', '身份证号');
$objActSheet->setCellValue('E2', '手机号');
$objActSheet->setCellValue('F2', '学员状态');
$objActSheet->setCellValue('G2', '教练');
$objActSheet->setCellValue('H2', '训练车辆');
$objActSheet->setCellValue('I2', '联系地址');
$objActSheet->setCellValue('J2', '报名日期');
$objActSheet->setCellValue('K2', '招生人');
$objActSheet->setCellValue('L2', '过科一日期');
$objActSheet->setCellValue('M2', '过科二日期');
$objActSheet->setCellValue('N2', '过科三日期');
foreach ($arr as  $v) {
$objPHPExcel->getActiveSheet()->getStyle($v.'2')->getAlignment()->setHorizontal(PHPExcel_Style_Alignment::HORIZONTAL_CENTER);// 居中
$objPHPExcel->getActiveSheet()->getStyle($v.'2')->getAlignment()->setVertical(PHPExcel_Style_Alignment::VERTICAL_CENTER);
$objPHPExcel->getActiveSheet()->getColumnDimension($v)->setWidth(50);// 单元格宽度
$objPHPExcel->getActiveSheet()->getStyle($v.'2')->applyFromArray($styleArray2);
}
$styleArray = array(
'borders' => array(
'allborders' => array(
//'style' => PHPExcel_Style_Border::BORDER_THICK,//边框是粗的
'style' => PHPExcel_Style_Border::BORDER_THIN,//细边框
//'color' => array('argb' => 'FFFF0000'),
),
),
);
$i=3;
$xueyuanModel = model('kehu');
$where = " mdid=28 ";
$data = $xueyuanModel->get(array('*'),$where,0,10000);
if($data['count']){
$scoreModel = model('score');
foreach ($data['data'] as $k => $rk) {
$sex = $rk['UserSex']==1?'男':'女';
$objPHPExcel->getActiveSheet()->setCellValue('A' . $i, $rk['Id']);
$objPHPExcel->getActiveSheet()->setCellValue('B' . $i, $rk['UserName']);
$objPHPExcel->getActiveSheet()->setCellValue('C' . $i, $sex);
$objPHPExcel->getActiveSheet()->setCellValue('D' . $i, "`".$rk['sfz']);
$objPHPExcel->getActiveSheet()->setCellValue('E' . $i, $rk['UserMobile']);
$objPHPExcel->getActiveSheet()->setCellValue('F' . $i, xyztdesc($rk['xyzt']));
$objPHPExcel->getActiveSheet()->setCellValue('G' . $i, showtype2('jc_user','TrueName','Id',$rk['jlid']));
$objPHPExcel->getActiveSheet()->setCellValue('H' . $i, showtype2('jc_car','chepai','id',$rk['carID']));
$objPHPExcel->getActiveSheet()->setCellValue('I' . $i, $rk['UserAddr']);
$objPHPExcel->getActiveSheet()->setCellValue('J' . $i, date('Y-md',strtotime($rk['bmtime'])));
$objPHPExcel->getActiveSheet()->setCellValue('K' . $i, showtype2('jc_user','TrueName','Id',$rk['addid']));
//科目一,科目二,科目三通过时间
$suba = array('L'=>1,'M'=>2,'N'=>3);
foreach($suba as $sk=>$sv){
$scorerow = $scoreModel->get(array('testtime')," uId='".$rk['Id']."' AND score=1 AND subtype=".$sv."");
$objPHPExcel->getActiveSheet()->setCellValue($sk . $i, $scorerow['testtime']);
}
foreach ($arr as $va) {
$objPHPExcel->getActiveSheet()->getStyle($va.$i)->getAlignment()->setHorizontal(PHPExcel_Style_Alignment::HORIZONTAL_CENTER); $objPHPExcel->getActiveSheet()->getStyle($va.$i)->getAlignment()->setVertical(PHPExcel_Style_Alignment::VERTICAL_CENTER);
}
$objPHPExcel->getActiveSheet()->getRowDimension($i)->setRowHeight(20);
$i++;
}
}
$j=$i-1;
$objPHPExcel->getActiveSheet()->getStyle('A1:H'.$j)->applyFromArray($styleArray);
#######################################################################################################

$objPHPExcel->getActiveSheet()->setTitle('客户信息');
echo date('H:i:s'), " 设置格式为Excel2007版格式", EOL;
$callStartTime = microtime(true);

$objWriter = PHPExcel_IOFactory::createWriter($objPHPExcel, 'Excel2007');
$objWriter->save(str_replace('.php', '.xlsx', __FILE__));
$callEndTime = microtime(true);
$callTime = $callEndTime - $callStartTime;
echo date('H:i:s'), " 设置生成的文件为： ", str_replace('.php', '.xlsx', pathinfo(__FILE__, PATHINFO_BASENAME)), EOL;
echo date('H:i:s'), ' 写入Workbook中耗时 ', sprintf('%.4f', $callTime), " 秒", EOL;
echo date('H:i:s'), ' 当前内存使用情况: ', (memory_get_usage(true) / 1024 / 1024), " MB", EOL;
echo date('H:i:s'), " 内存使用峰值: ", (memory_get_peak_usage(true) / 1024 / 1024), " MB", EOL;
echo date('H:i:s'), " 完成写入文件", EOL;
echo date('H:i:s'), ' 文件被创建在： ', getcwd(), '目录', EOL;