18:47:52 Create new PHPExcel object<br />18:47:52 Set document properties<br />18:47:52 Add some data<br />18:47:52 Sum of Range #1 is 23<br />18:47:52 Sum of Range #2 is 33<br />18:47:52 Sum of both Ranges is 56<br />18:47:52 Minimum value in either Range is 3<br />18:47:55 Maximum value in either Range is 17<br />18:47:55 Average value of both Ranges is 9.333333333333334<br />18:47:55 Rename worksheet<br />18:47:55 Write to Excel2007 format<br /><br />
<b>Fatal error</b>:  Uncaught Error: Class 'ZipArchive' not found in /var/www/autolab/auto2/auto4/vendor/phpoffice/phpexcel/Classes/PHPExcel/Writer/Excel2007.php:227
Stack trace:
#0 /var/www/autolab/auto2/auto4/vendor/phpoffice/phpexcel/Examples/03formulas.php(119): PHPExcel_Writer_Excel2007-&gt;save('/var/www/autola...')
#1 {main}
  thrown in <b>/var/www/autolab/auto2/auto4/vendor/phpoffice/phpexcel/Classes/PHPExcel/Writer/Excel2007.php</b> on line <b>227</b><br />