< ?php set_include_path(get_include_path() . PATH_SEPARATOR . __DIR__ . DIRECTORY_SEPARATOR . 'Classes'); include 'PHPExcel.php'; $file = __DIR__ . DIRECTORY_SEPARATOR . 'data.xlsx';//约5万行记录 $bm = memory_get_usage(true)/1024/1024; $objPHPExcel = PHPExcel_IOFactory::load($file); $em = memory_get_usage(true)/1024/1024; echo sprintf("%.9f\r\n", $em-$bm); echo "serialize ...\r\n"; /* 超出内存限制 file_put_contents(__DIR__ . DIRECTORY_SEPARATOR . 'data.db', serialize($objPHPExcel)); */ /* 不能序列化 PHPExcel 对象? file_put_contents(__DIR__ . DIRECTORY_SEPARATOR . 'data.db', json_encode($objPHPExcel)); */ /* 超出内存限制 It's like JSON. but fast and small. file_put_contents(__DIR__ . DIRECTORY_SEPARATOR . 'data.db', msgpack_pack($objPHPExcel)); */ /* It's ok. Very fast. */ file_put_contents(__DIR__ . DIRECTORY_SEPARATOR . 'data.db', igbinary_serialize($objPHPExcel)); echo "done.";
比 define 和 apc_define_constants 效率更高的定义常量的方式:hidef