22:27:45 Create new PHPExcel object
22:27:45 Set properties
22:27:45 Add some data
<br />
<b>Warning</b>:  Trying to access array offset on int in <b>/var/www/sigicov_sign/shared/PHPExcel/Classes/PHPExcel/Cell/DefaultValueBinder.php</b> on line <b>86</b><br />
<br />
<b>Warning</b>:  Trying to access array offset on int in <b>/var/www/sigicov_sign/shared/PHPExcel/Classes/PHPExcel/Cell/DefaultValueBinder.php</b> on line <b>86</b><br />
<br />
<b>Warning</b>:  Trying to access array offset on int in <b>/var/www/sigicov_sign/shared/PHPExcel/Classes/PHPExcel/Cell/DefaultValueBinder.php</b> on line <b>86</b><br />
<br />
<b>Warning</b>:  Trying to access array offset on int in <b>/var/www/sigicov_sign/shared/PHPExcel/Classes/PHPExcel/Cell/DefaultValueBinder.php</b> on line <b>86</b><br />
<br />
<b>Warning</b>:  Trying to access array offset on int in <b>/var/www/sigicov_sign/shared/PHPExcel/Classes/PHPExcel/Cell/DefaultValueBinder.php</b> on line <b>86</b><br />
<br />
<b>Warning</b>:  Trying to access array offset on int in <b>/var/www/sigicov_sign/shared/PHPExcel/Classes/PHPExcel/Cell/DefaultValueBinder.php</b> on line <b>86</b><br />
22:27:45 Rename sheet
22:27:45 Write to Excel2007 format
<br />
<b>Fatal error</b>:  Uncaught Error: Class &quot;ZipArchive&quot; not found in /var/www/sigicov_sign/shared/PHPExcel/Classes/PHPExcel/Writer/Excel2007.php:225
Stack trace:
#0 /var/www/sigicov_sign/shared/PHPExcel/Tests/03formulas.php(86): PHPExcel_Writer_Excel2007-&gt;save()
#1 {main}
  thrown in <b>/var/www/sigicov_sign/shared/PHPExcel/Classes/PHPExcel/Writer/Excel2007.php</b> on line <b>225</b><br />