03:58:00 Enable Cell Caching using MemoryGZip method
03:58:00 Create new PHPExcel object
03:58:00 Set properties
03:58:00 Add data
03:58:00 Hide 'Phone' and 'fax' columns
03:58:00 Set outline levels
03:58:00 Freeze panes
03:58:00 Rows to repeat at top
03:58:02 Write to Excel2007 format

Fatal error: Uncaught exception 'PHPExcel_Writer_Exception' with message 'Could not close zip file /var/www/html/PHPExcel/Examples/06largescale-with-cellcaching.xlsx.' in /var/www/html/PHPExcel/Classes/PHPExcel/Writer/Excel2007.php:389 Stack trace: #0 /var/www/html/PHPExcel/Examples/06largescale-with-cellcaching.php(113): PHPExcel_Writer_Excel2007->save('/var/www/html/P...') #1 {main} thrown in /var/www/html/PHPExcel/Classes/PHPExcel/Writer/Excel2007.php on line 389