23:20:23 Enable Cell Caching using MemoryGZip method<br />23:20:23 Create new PHPExcel object<br />23:20:23 Set properties<br />23:20:23 Add data<br />23:20:23 Hide 'Phone' and 'fax' columns<br />23:20:23 Set outline levels<br />23:20:23 Freeze panes<br />23:20:23 Rows to repeat at top<br />23:20:25 Write to Excel2007 format<br />23:20:27 File written to 06largescale-with-cellcaching.xlsx<br />Call time to write Workbook was 2.9340 seconds<br />23:20:27 Current memory usage: 26.75 MB<br />23:20:27 Peak memory usage: 30 MB<br />23:20:27 Done writing file<br />File has been created in /alidata/www/jiandance/vendor/phpoffice/phpexcel/Examples<br />