20:44:29 Create new PHPExcel object
20:44:29 Set document properties
20:44:29 Add some data
20:44:29 Add comments
20:44:29 Add rich-text string
20:44:29 Merge cells
20:44:29 Protect cells
20:44:29 Set cell number formats
20:44:29 Set column widths
20:44:29 Set fonts
20:44:29 Set alignments
20:44:29 Set thin black border outline around column
20:44:29 Set thick brown border outline around Total
20:44:29 Set fills
20:44:29 Set style for header row using alternative method
20:44:29 Unprotect a cell
20:44:29 Add a hyperlink to an external website
20:44:29 Add a hyperlink to another cell on a different worksheet within the workbook
20:44:29 Add a drawing to the worksheet
20:44:29 Add a drawing to the worksheet
20:44:29 Add a drawing to the worksheet
20:44:29 Play around with inserting and removing rows and columns
20:44:29 Set header/footer
20:44:29 Set page orientation and size
20:44:29 Rename first worksheet
20:44:29 Create a second Worksheet object
20:44:29 Add some data
20:44:29 Set the worksheet tab color
20:44:29 Set alignments
20:44:29 Set column widths
20:44:29 Set fonts
20:44:29 Add a drawing to the worksheet
20:44:29 Set page orientation and size
20:44:29 Rename second worksheet
20:44:29 Write to HTML format

Fatal error: Uncaught Error: Call to undefined function mb_strtolower() in /var/www/html/wechart.365tsy.com/vendor/phpoffice/phpexcel/Classes/PHPExcel/Style/NumberFormat.php:448 Stack trace: #0 [internal function]: PHPExcel_Style_NumberFormat::setLowercaseCallback(Array) #1 /var/www/html/wechart.365tsy.com/vendor/phpoffice/phpexcel/Classes/PHPExcel/Style/NumberFormat.php(464): preg_replace_callback('/(?:^|")([^"]*)...', Array, 'd-mmm-yy') #2 /var/www/html/wechart.365tsy.com/vendor/phpoffice/phpexcel/Classes/PHPExcel/Style/NumberFormat.php(647): PHPExcel_Style_NumberFormat::formatAsDate(46004, 'd-mmm-yy') #3 /var/www/html/wechart.365tsy.com/vendor/phpoffice/phpexcel/Classes/PHPExcel/Writer/HTML.php(1245): PHPExcel_Style_NumberFormat::toFormattedString(46004, 'd-mmm-yy', Array) #4 /var/www/html/wechart.365tsy.com/vendor/phpoffice/phpexcel/Classes/PHPExcel/Writer/HTML.php(476): PHPExcel_Writer_HTML->generateRow(Object(PHPExcel_Worksheet), Array, 0, 'td') #5 /var/www/html/wechart.365tsy.com/vendor/phpoffice/phpexcel/Classes/P in /var/www/html/wechart.365tsy.com/vendor/phpoffice/phpexcel/Classes/PHPExcel/Style/NumberFormat.php on line 448