PHPexcel cell caching - php

Question

Am working with large excel file I have removed limits is there a way I can read through my cells much quicker. I have 6000 rows and reducing the tmp folder in my wamp folder.
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');
What to clean up workbooks with worksheets with , in them
`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

Tip 1:
replace
for($i=0;$i<$highestRowEM;$i++){
$varval=$objPHPExcel->getActiveSheet()->getCell('A'.$i)->getValue();
with
$objSheet = $objPHPExcel->getActiveSheet();
for($i=0;$i<$highestRowEM;$i++){
$varval = $objSheet->getCell('A'.$i)->getValue();
Then you're not calling $objPHPExcel->getActiveSheet() in every iteration of the loop.
Then tell us what you're actually trying to do with the worksheet data, and we may be able to help speed it up a bit more
EDIT
Don't set the cell value unless you have to;
Don't instantiate the Writer until you need it, and definitely not in the loop;
Instead of using $letters and $alphabet, use the routines built-into PHPExcel, or take advantage of PHP's Perl-style character incrementor;
Don't do maths in your loop comparisons
////Validation
foreach ($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');