03:21:43 Create new PHPExcel object
03:21:43 Set document properties
03:21:43 Add some data
03:21:43 Add comments
03:21:43 Add rich-text string
03:21:43 Merge cells
03:21:43 Protect cells
03:21:43 Set cell number formats
03:21:43 Set column widths
03:21:43 Set fonts
03:21:43 Set alignments
03:21:43 Set thin black border outline around column
03:21:43 Set thick brown border outline around Total
03:21:43 Set fills
03:21:43 Set style for header row using alternative method
03:21:43 Unprotect a cell
03:21:43 Add a hyperlink to an external website
03:21:43 Add a hyperlink to another cell on a different worksheet within the workbook
03:21:43 Add a drawing to the worksheet
03:21:43 Add a drawing to the worksheet
03:21:43 Add a drawing to the worksheet
03:21:43 Play around with inserting and removing rows and columns
03:21:43 Set header/footer
03:21:43 Set page orientation and size
03:21:43 Rename first worksheet
03:21:43 Create a second Worksheet object
03:21:43 Add some data
03:21:43 Set the worksheet tab color
03:21:43 Set alignments
03:21:43 Set column widths
03:21:43 Set fonts
03:21:43 Add a drawing to the worksheet
03:21:43 Set page orientation and size
03:21:43 Rename second worksheet
03:21:43 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(46306, 'd-mmm-yy') #3 /var/www/tsf-audio-bitrate/html/vendor/phpoffice/phpexcel/Classes/PHPExcel/Worksheet.php(2502): PHPExcel_Style_NumberFormat::toFormattedString(46306, '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