07:05:27 Create new PHPExcel object
07:05:27 Set document properties
07:05:27 Add some data
07:05:27 Add comments
07:05:27 Add rich-text string
07:05:27 Merge cells
07:05:27 Protect cells
07:05:27 Set cell number formats
07:05:27 Set column widths
07:05:27 Set fonts
07:05:27 Set alignments
07:05:27 Set thin black border outline around column
07:05:27 Set thick brown border outline around Total
07:05:27 Set fills
07:05:27 Set style for header row using alternative method
07:05:27 Unprotect a cell
07:05:27 Add a hyperlink to an external website
07:05:27 Add a hyperlink to another cell on a different worksheet within the workbook
07:05:27 Add a drawing to the worksheet
07:05:27 Add a drawing to the worksheet
07:05:27 Add a drawing to the worksheet
07:05:27 Play around with inserting and removing rows and columns
07:05:27 Set header/footer
07:05:27 Set page orientation and size
07:05:27 Rename first worksheet
07:05:27 Create a second Worksheet object
07:05:27 Add some data
07:05:27 Set the worksheet tab color
07:05:27 Set alignments
07:05:27 Set column widths
07:05:27 Set fonts
07:05:27 Add a drawing to the worksheet
07:05:27 Set page orientation and size
07:05:27 Rename second worksheet
07:05:27 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(46270, 'd-mmm-yy') #3 /var/www/tsf-audio-bitrate/html/vendor/phpoffice/phpexcel/Classes/PHPExcel/Worksheet.php(2502): PHPExcel_Style_NumberFormat::toFormattedString(46270, '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