13:44:42 Create new PHPExcel object
13:44:42 Set document properties
13:44:42 Add some data
13:44:42 Add comments
13:44:42 Add rich-text string
13:44:42 Merge cells
13:44:42 Protect cells
13:44:42 Set cell number formats
13:44:42 Set column widths
13:44:42 Set fonts
13:44:42 Set alignments
13:44:42 Set thin black border outline around column
13:44:42 Set thick brown border outline around Total
13:44:42 Set fills
13:44:42 Set style for header row using alternative method
13:44:42 Unprotect a cell
13:44:42 Add a hyperlink to an external website
13:44:42 Add a hyperlink to another cell on a different worksheet within the workbook
13:44:42 Add a drawing to the worksheet
13:44:42 Add a drawing to the worksheet
13:44:42 Add a drawing to the worksheet
13:44:42 Play around with inserting and removing rows and columns
13:44:42 Set header/footer
13:44:42 Set page orientation and size
13:44:42 Rename first worksheet
13:44:42 Create a second Worksheet object
13:44:42 Add some data
13:44:42 Set the worksheet tab color
13:44:42 Set alignments
13:44:42 Set column widths
13:44:42 Set fonts
13:44:42 Add a drawing to the worksheet
13:44:42 Set page orientation and size
13:44:42 Rename second worksheet
13:44:42 Write to CSV format
Fatal error: Uncaught Error: Call to undefined function mb_strtolower() in /var/www/tsf-audio-bitrate/html/vendor/phpoffice/phpexcel/Classes/PHPExcel/Style/NumberFormat.php:448
Stack trace:
#0 [internal function]: PHPExcel_Style_NumberFormat::setLowercaseCallback(Array)
#1 /var/www/tsf-audio-bitrate/html/vendor/phpoffice/phpexcel/Classes/PHPExcel/Style/NumberFormat.php(464): preg_replace_callback('/(?:^|")([^"]*)...', Array, 'd-mmm-yy')
#2 /var/www/tsf-audio-bitrate/html/vendor/phpoffice/phpexcel/Classes/PHPExcel/Style/NumberFormat.php(647): PHPExcel_Style_NumberFormat::formatAsDate(46308, 'd-mmm-yy')
#3 /var/www/tsf-audio-bitrate/html/vendor/phpoffice/phpexcel/Classes/PHPExcel/Worksheet.php(2502): PHPExcel_Style_NumberFormat::toFormattedString(46308, 'd-mmm-yy')
#4 /var/www/tsf-audio-bitrate/html/vendor/phpoffice/phpexcel/Classes/PHPExcel/Writer/CSV.php(142): PHPExcel_Worksheet->rangeToArray('A1:E1', '', true)
#5 /var/www/tsf-audio-bitrate/html/vendor/phpoffice/phpexcel/Examples/16csv.php(50): PHPExcel_Writer_CSV->save(' in /var/www/tsf-audio-bitrate/html/vendor/phpoffice/phpexcel/Classes/PHPExcel/Style/NumberFormat.php on line 448