06:11:33 Create new PHPExcel object
06:11:33 Set document properties
06:11:33 Add data
06:11:33 Set data validation
06:11:33 Write to Excel5 format

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06:11:33 File written to 15datavalidation-xls.xls
Call time to write Workbook was 0.0162 seconds
06:11:33 Current memory usage: 2 MB
06:11:33 Peak memory usage: 2 MB
06:11:33 Done writing file
File has been created in /home/autourdey/invoice/vendor/phpoffice/phpexcel/Examples