00:51:06 Enable Cell Caching using MemoryGZip method<br />00:51:06 Create new PHPExcel object<br />00:51:06 Set properties<br />00:51:06 Add data<br />00:51:06 Hide 'Phone' and 'fax' columns<br />00:51:06 Set outline levels<br />00:51:06 Freeze panes<br />00:51:06 Rows to repeat at top<br />00:51:07 Write to Excel2007 format<br />00:51:09 File written to 06largescale-with-cellcaching.xlsx<br />Call time to write Workbook was 1.4867 seconds<br />00:51:09 Current memory usage: 24 MB<br />00:51:09 Peak memory usage: 28 MB<br />00:51:09 Done writing file<br />File has been created in /var/www/customs_yiao/vendor/phpoffice/phpexcel/Examples<br />