我必须自动生成Excel文件,Excel文件包含15.000到50.000行和75列.
它是使用Excel中的连接和公式获得的(68个Excel公式,有IF,IFERROR,COUNTIF …).
所以我选择了PHPExcel库,但是我必须在1h15到1h30之间等待,我已经减少了循环次数.在阅读了大量文档后,我注意到这是PHPExcel的问题.
如果我考虑创建一个包含从我的数据库中检索的所有Excel公式和数据的PHP数组的可能性,这个方法需要很长时间,而且我不确定它是否会起作用.
所以我问你,还有另外一种方法吗?一种生成Excel工作簿类型的方法,该类型包含大量数据(包含1或2百万个单元格)和公式(在15分钟内).
<?PHP require_once dirname(__FILE__) . '/Classes/PHPExcel.PHP'; require_once dirname(__FILE__) . '/Classes/PHPExcel/IOFactory.PHP'; $path = "Lirefichierexcel/Trame.xlsx"; $objPHPExcel = new PHPExcel(); $sheet = $objPHPExcel-> getActiveSheet(); $rowCount =5; $worksheetTitle = $sheet->getTitle(); $highestRow = $sheet->getHighestRow(); // e.g. 10 $highestColumn = $sheet->getHighestColumn(); // e.g 'F' $highestColumnIndex = PHPExcel_Cell::columnIndexFromString($highestColumn); $nrColumns = ord($highestColumn) - 64; $rowCount=5; $projet=$_REQUEST['projet']; try { //Etablir la connexxion include 'Proprietes.PHP'; $connexion = new PDO("$driver:host=$host;dbname=$dbase",$user,$password); //Préparer la requête $requetesql="select * from $projet as a left join feuille_de_prix as b on b.Liasse = a.Liasse and b.Item = a.Item order by 1"; $requetePreparee= $connexion->prepare($requetesql); //Exécuter la requête $resultat = $requetePreparee->execute(); //Tester le résultat if(! $resultat) die("<p>La lecture a échoué</>\n"); else { echo "<h1>Jointure entre le $projet et la feuille de prix </h1>"; while($ligne=$requetePreparee->fetch()){ $sheet->SetCellValue('F'.$rowCount,$ligne[4]) ->SetCellValue('F'.$rowCount,$ligne[4]) $rowCount++; } $worksheetTitle = $sheet->getTitle(); $highestRow = $sheet->getHighestRow(); // e.g. 10 $highestColumn = $sheet->getHighestColumn(); // e.g 'F' $highestColumnIndex = PHPExcel_Cell::columnIndexFromString($highestColumn); $nrColumns = ord($highestColumn) - 64; for ($row = 5; $row <= $highestRow; ++ $row) { $row1=$row+1; $rowm1=$row-1; //AA4 $sheet->setCellValue( 'AA' . $row,'=..............') //AB4 ->setCellValue( 'AB' . $row,'=..............') } } echo date('H:i:s')," Write to Excel2007 format",PHP_EOL; $objWriter = PHPExcel_IOFactory::createWriter($objPHPExcel,'Excel2007'); $objWriter->save(str_replace('.PHP','.xlsx',__FILE__)); echo date('H:i:s')," File written to ",str_replace('.PHP',__FILE__),PHP_EOL; // Echo memory peak usage echo date('H:i:s')," Peak memory usage: ",(memory_get_peak_usage(true) / 1024 / 1024)," MB",PHP_EOL; // Echo done echo date('H:i:s')," Done writing file",PHP_EOL; $connexion=null; }catch (PDOException $e) { print "Erreur !: " . $e->getMessage() . "<br/>"; die(); } ?>
使用BoxSpout.
It is a PHP library to read and write CSV and XLSX
files,in a fast and scalable way. Contrary to other file readers or
writers,it is capable of processing very large files while keeping
the memory usage really low (less than 10MB). Here are a few numbers regarding the performance of Spout.