13:23:18 Create new PHPExcel object
13:23:18 Set document properties
13:23:18 Add some data
13:23:18 Add comments
13:23:18 Add rich-text string
13:23:18 Merge cells
13:23:18 Protect cells
13:23:18 Set cell number formats
13:23:18 Set column widths
13:23:18 Set fonts
13:23:18 Set alignments
13:23:18 Set thin black border outline around column
13:23:18 Set thick brown border outline around Total
13:23:18 Set fills
13:23:18 Set style for header row using alternative method
13:23:18 Unprotect a cell
13:23:18 Add a hyperlink to an external website
13:23:18 Add a hyperlink to another cell on a different worksheet within the workbook
13:23:18 Add a drawing to the worksheet
13:23:18 Add a drawing to the worksheet
13:23:18 Add a drawing to the worksheet
13:23:18 Play around with inserting and removing rows and columns
13:23:18 Set header/footer
13:23:18 Set page orientation and size
13:23:18 Rename first worksheet
13:23:18 Create a second Worksheet object
13:23:18 Add some data
13:23:18 Set the worksheet tab color
13:23:18 Set alignments
13:23:18 Set column widths
13:23:18 Set fonts
13:23:18 Add a drawing to the worksheet
13:23:18 Set page orientation and size
13:23:18 Rename second worksheet
13:23:18 Write to CSV format
Fatal error: Uncaught Error: Call to undefined function mb_strtolower() in /var/www/html/psyserve.psyventures.com/vendor/phpoffice/phpexcel/Classes/PHPExcel/Style/NumberFormat.php:448
Stack trace:
#0 [internal function]: PHPExcel_Style_NumberFormat::setLowercaseCallback(Array)
#1 /var/www/html/psyserve.psyventures.com/vendor/phpoffice/phpexcel/Classes/PHPExcel/Style/NumberFormat.php(464): preg_replace_callback('/(?:^|")([^"]*)...', Array, 'd-mmm-yy')
#2 /var/www/html/psyserve.psyventures.com/vendor/phpoffice/phpexcel/Classes/PHPExcel/Style/NumberFormat.php(647): PHPExcel_Style_NumberFormat::formatAsDate(45731, 'd-mmm-yy')
#3 /var/www/html/psyserve.psyventures.com/vendor/phpoffice/phpexcel/Classes/PHPExcel/Worksheet.php(2502): PHPExcel_Style_NumberFormat::toFormattedString(45731, 'd-mmm-yy')
#4 /var/www/html/psyserve.psyventures.com/vendor/phpoffice/phpexcel/Classes/PHPExcel/Writer/CSV.php(142): PHPExcel_Worksheet->rangeToArray('A1:E1', '', true)
#5 /var/www/html/psyserve.psyventures.com/vendor/phpoffice/phpexcel/Examples/ in /var/www/html/psyserve.psyventures.com/vendor/phpoffice/phpexcel/Classes/PHPExcel/Style/NumberFormat.php on line 448