19:16:30 Create new PHPExcel object<br />19:16:30 Set document properties<br />19:16:30 Add some data<br />19:16:30 Add conditional formatting<br />19:16:30 Duplicate the conditional formatting across a range of cells<br />19:16:30 Write to Excel2007 format<br /><br />
<b>Fatal error</b>:  Uncaught Error: Class 'ZipArchive' not found in /var/www/html/vendor/phpoffice/phpexcel/Classes/PHPExcel/Writer/Excel2007.php:227
Stack trace:
#0 /var/www/html/vendor/phpoffice/phpexcel/Examples/08conditionalformatting2.php(110): PHPExcel_Writer_Excel2007-&gt;save('/var/www/html/v...')
#1 {main}
  thrown in <b>/var/www/html/vendor/phpoffice/phpexcel/Classes/PHPExcel/Writer/Excel2007.php</b> on line <b>227</b><br />