13:47:23 Create new PHPExcel object<br />13:47:23 Set document properties<br />13:47:23 Add some data<br />13:47:23 Sum of Range #1 is 23<br />13:47:23 Sum of Range #2 is 33<br />13:47:23 Sum of both Ranges is 56<br />13:47:23 Minimum value in either Range is 3<br />13:47:23 Maximum value in either Range is 17<br />13:47:23 Average value of both Ranges is 9.333333333333334<br />13:47:23 Rename worksheet<br />13:47:23 Write to Excel2007 format<br /><br />
<b>Fatal error</b>:  Uncaught Error: Class 'ZipArchive' not found in /var/www/serami/html/vendor/phpoffice/phpexcel/Classes/PHPExcel/Writer/Excel2007.php:227
Stack trace:
#0 /var/www/serami/html/vendor/phpoffice/phpexcel/Examples/03formulas.php(119): PHPExcel_Writer_Excel2007-&gt;save('/var/www/serami...')
#1 {main}
  thrown in <b>/var/www/serami/html/vendor/phpoffice/phpexcel/Classes/PHPExcel/Writer/Excel2007.php</b> on line <b>227</b><br />