07:11:45 Enable Cell Caching using MemoryGZip method
07:11:45 Create new PHPExcel object
07:11:45 Set properties
07:11:45 Add data
07:11:45 Hide 'Phone' and 'fax' columns
07:11:45 Set outline levels
07:11:45 Freeze panes
07:11:45 Rows to repeat at top
07:11:46 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