PHPexcel单元格缓存

Question

我正在使用大型的excel文件我已经删除了限制有一种方法可以更快地读取我的单元格。我有6000行，并减少了我的wamp文件夹中的tmp文件夹。

set_time_limit(0); 
ini_set('memory_limit', '-1'); 
include'../Classes/PHPExcel.php'; 
include'../Classes/PHPExcel/IOFactory.php'; 
$cacheMethod = PHPExcel_CachedObjectStorageFactory::cache_to_phpTemp; 
$cacheSettings = array(' memoryCacheSize ' =>'8MB');  
PHPExcel_Settings::setCacheStorageMethod($cacheMethod, $cacheSettings); 
$objReader = new PHPExcel_Reader_Excel2007(); 
$objPHPExcel = $objReader->load('Book1.xlsx'); 
$highestRowEM = $objPHPExcel->getActiveSheet()->getHighestRow(); 
echo $highestRowEM; 
for($i=0;$i<$highestRowEM;$i++){ 
    $varval=$objPHPExcel->getActiveSheet()->getCell('A'.$i)->getValue(); 
    if($varval==""){ 
     break; 
    } 
} 
echo $i; 
$objWriter = PHPExcel_IOFactory::createWriter($objPHPExcel, 'Excel2007'); 
$objWriter->save('Book1.xlsx'); 

怎么清理工作簿与工作表，在其中

`include'../Classes/PHPExcel.php'; 
    include'../Classes/PHPExcel/IOFactory.php'; 
    set_time_limit(0); 
    ini_set('memory_limit', '-1'); 
    $xlsxfiles=$_SESSION['file']; 
    echo $xlsxfiles; 
    echo "<br>"; 
    $objReader = PHPExcel_IOFactory::createReader('Excel2007'); 
    $objPHPExcel = PHPExcel_IOFactory::load('../upload/'.$xlsxfiles); 
    $objWriter = PHPExcel_IOFactory::createWriter($objPHPExcel, "Excel2007"); 
    ////Validation 
    foreach ($objPHPExcel->getWorksheetIterator() as $worksheet) { 
     $highestRow = $worksheet-> getHighestDataRow(); 
     $columnhighest=$worksheet->getHighestDataColumn(); 
     $columnhighestval=array_search($columnhighest, $alphabet); 
     echo 'Worksheet - ' , $worksheet->getTitle()." Number of rows: ".$highestRow."<br>"; 
     for($cl=0;$cl<$highestRow+1;$cl++){ 
      for ($ga=1;$ga<$columnhighestval;$ga++){ 
       $letters=strtoupper($alphabet[$ga]); 
       $clean=$worksheet->getCell($letters.$cl)->getValue(); 
       $cleandone=str_replace(','," ",$clean); 
       $worksheet->setCellValue($letters.$cl,$cleandone); 
      } 
      $objWriter = PHPExcel_IOFactory::createWriter($objPHPExcel, 'Excel2007'); 
     } 
    } 
    $objWriter = PHPExcel_IOFactory::createWriter($objPHPExcel, "Excel2007"); 
    $objWriter->setOffice2003Compatibility(true); 
    $objWriter->save('../upload/'.$xlsxfiles); 
    echo "Done"; 

Answer 1

提示1：

更换

for($i=0;$i<$highestRowEM;$i++){ 
    $varval=$objPHPExcel->getActiveSheet()->getCell('A'.$i)->getValue(); 

与

$objSheet = $objPHPExcel->getActiveSheet(); 
for($i=0;$i<$highestRowEM;$i++){ 
    $varval = $objSheet->getCell('A'.$i)->getValue(); 

然后，您在循环的每次迭代中都不会调用$ objPHPExcel-> getActiveSheet（）。

然后告诉我们你实际上试图与工作表数据做的，我们也许能够帮助加快速度多一点

编辑

不要将电池价值，除非你必须; 在你需要它之​​前不要实例化Writer，并且绝对不在循环中; 而不是使用$字母和$字母，使用PHPExcel内置的例程，或利用PHP的Perl风格的字符增长器; 不要做你的循环比较

////Validation 
    foreach ($objPHPExcel->getWorksheetIterator() as $worksheet) { 
     $highestRow = $worksheet->getHighestDataRow(); 
     $columnhighest=$worksheet->getHighestDataColumn(); 
     $columnhighest++; 
     echo 'Worksheet - ' , $worksheet->getTitle()." Number of rows: ".$highestRow."<br>"; 
     for($cl = 0; $cl <= $highestRow; $cl++){ 
      for ($ga='A'; $ga !== $columnhighest; $ga++){ 
       $clean=$worksheet->getCell($ga.$cl)->getValue(); 
       $cleandone=str_replace(','," ",$clean); 
       if($clean != $cleandone) { 
        $worksheet->setCellValue($ga.$cl, $cleandone); 
       } 
      } 
     } 
    } 
    $objWriter = PHPExcel_IOFactory::createWriter($objPHPExcel, 'Excel2007');