用phpExcelReader不能导入大量数据,该怎么解决

require_once '../phpExcelReader/Excel/reader.php';
$data = new Spreadsheet_Excel_Reader();
$data->setOutputEncoding('GB2312');
$data->read('../lfx.xls');
}

for ($i = 1; $i <= $data->sheets[0]['numRows']; $i++) 
{

for ($j = 1; $j <= $data->sheets[0]['numCols']; $j++) 
{

echo $data->sheets[0]['cells'][$i][$j];
}
}

PHP code
/* * PHPExcel.V1.7.6版本 [读取示例] */
include 'PHPExcel/IOFactory.php';
$filename = "d:/test.xls";
$readType = PHPExcel_IOFactory::identify($filename);  //在不知道文档类型的情况下获取
$excelReader = PHPExcel_IOFactory::createReader($readType);
$PHPExcelObj = $excelReader->load($filename);
$currentSheet = $PHPExcelObj->getSheet(0);            //选取第一张表单(Sheet1)为当前操作的表单
$excelRows = $currentSheet->getHighestRow();          //获取最大行
$excelColumn = $currentSheet->getHighestColumn();     //获取最大列
foreach(range(1,$excelRows) as $row){    
$line = '<p>';    
foreach(range('A',$excelColumn) as $column){        
$line .= $currentSheet->getCell($column.$row)->getValue().",";    
}    
$line .= '</p>';    
echo $line;}

require_once '../phpExcelReader/Excel/reader.php';
$data = new Spreadsheet_Excel_Reader();
$data->setOutput……