10:06:53 Create new PHPExcel object
10:06:53 Set document properties
10:06:53 Add some data
10:06:53 Add conditional formatting
10:06:53 Duplicate the conditional formatting across a range of cells
10:06:53 Write to Excel2007 format

Fatal error: Uncaught Error: Class 'ZipArchive' not found in /var/www/html/API/class/PHPExcel-1.8/Classes/PHPExcel/Writer/Excel2007.php:220 Stack trace: #0 /var/www/html/API/class/PHPExcel-1.8/Examples/08conditionalformatting2.php(110): PHPExcel_Writer_Excel2007->save() #1 {main} thrown in /var/www/html/API/class/PHPExcel-1.8/Classes/PHPExcel/Writer/Excel2007.php on line 220