【发布时间】:2012-12-01 15:49:21
【问题描述】:
我已经尝试了 PHPExcel 1.7.8 手册中用于单元缓存的所有方法,但没有一个有效。每次尝试加载大约 30 MB 的 Excel 文件时,我仍然会耗尽内存。
这是我的代码:
ini_set('memory_limit', '256M'); // Up from default 32MB
require MODULES_DIR . '/PHPExcel.php';
$cacheMethod = PHPExcel_CachedObjectStorageFactory::cache_to_discISAM;
$cacheSettings = array('dir' => '/usr/local/tmp');
PHPExcel_Settings::setCacheStorageMethod($cacheMethod, $cacheSettings);
$inputFileType = PHPExcel_IOFactory::identify($dir . $source_file);
$objReader = PHPExcel_IOFactory::createReader($inputFileType);
$objReader->setReadDataOnly(true);
$objPHPExcel = $objReader->load($dir . $source_file);
$total_sheets = $objPHPExcel->getSheetCount();
$allSheetName = $objPHPExcel->getSheetNames();
$objWorksheet = $objPHPExcel->setActiveSheetIndex(0);
$highestRow = $objWorksheet->getHighestRow();
$highestColumn = $objWorksheet->getHighestColumn();
$headingsArray = $objWorksheet->rangeToArray('A1:'.$highestColumn.'1',null, true, true, true);
$headingsArray = $headingsArray[1];
$r = -1;
$namedDataArray = array();
for ($row = 2; $row <= $highestRow; ++$row) {
$dataRow = $objWorksheet->rangeToArray('A'.$row.':'.$highestColumn.$row,null, true, true, true);
if ((isset($dataRow[$row]['A'])) && ($dataRow[$row]['A'] > '')) {
++$r;
foreach($headingsArray as $columnKey => $columnHeading) {
$namedDataArray[$r][$columnHeading] = $dataRow[$row][$columnKey];
}
}
}
我已经尝试了每一种单元缓存机制,一直到“cache_to_sqlite3”,但它们都不起作用。
谁能告诉我我在这里做错了什么?
编辑:显然我跳过了“cache_to_sqlite”选项。我试过了,它开始缓存。但是,它在缓存 30 MB 文件和 256 MB 可用内存的过程中仍然会耗尽内存。这是错误:
Fatal error: Uncaught exception 'Exception' with message 'out of memory' in modules/PHPExcel/CachedObjectStorage/SQLite.php:64 Stack trace: #0 modules/PHPExcel/CachedObjectStorage/SQLite.php(81): PHPExcel_CachedObjectStorage_SQLite->_storeData() #1 modules/PHPExcel/Worksheet.php(1123): PHPExcel_CachedObjectStorage_SQLite->addCacheData('X2498702', Object(PHPExcel_Cell)) #2 modules/PHPExcel/Reader/Excel5.php(3549): PHPExcel_Worksheet->getCell('X2498702') #3 modules/PHPExcel/Reader/Excel5.php(894): PHPExcel_Reader_Excel5->_readLabelSst() #4 modules/updater.inc.php(1478): PHPExcel_Reader_Excel5->load('modules/p...') #5 modules/updater.php(204): Updater->process_xls('prods.xls') #6 {main} thrown in modules/PHPExcel/CachedObjectStorage/SQLite.php on line 64
【问题讨论】: