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When using PHPExcel you can use the built in function: An easy way... $date = date_create('30-12-1899'); date_add($date, date_interval_create_from_date_string("{$value['A']} days")); echo date_format($date, 'Y-m-d'); It appears your variable is a string, or is expecting a US format date.
7 mar 2024 · In PHP Spreadsheet, the date or time values are stored in an excel sheet in the form of timestamp which is a floating point value. So in order to store date/time in a human-readable format, need to calculate the correct excel timestamp and finally set a number format mask.
27 maj 2024 · PHPExcel lets you read data from pre-existing Excel files in addition to generating new ones. With PHPExcel, you may read data from particular cells or ranges in an existing Excel file and handle it in your PHP application as needed.
11 lip 2020 · Open the generated file create-xlsx-files-with-date-and-time-data.xlsx. // Set cell A1 with the "Current Date" string value $sheet->setCellValue('A1', date('F d, Y')); // Format cell A1 as date $sheet->getStyle('A1') ->getNumberFormat() ->setFormatCode(\PhpOffice\PhpSpreadsheet\Style\NumberFormat::FORMAT_DATE_YYYYMMDDSLASH) ;
5 cze 2024 · In this blog learn how to export PHP data to .xls file step by step. With the help of PHP script you can export data to Excel and download it in a .xls file.
28 kwi 2023 · Learn how to read and write spreadsheet data using PHP and the PhpSpreadsheet library. This tutorial covers loading Excel files, reading data, and writing data back to new files.
13 sie 2016 · You can use the PHPExcel functions like PHPExcel_Shared_Date::PHPToExcel() to convert human dates/PHP DateTime objects/Unix timestamps to MS Excel Serialized timestamps. $sheet->setCellValueByColumnAndRow(0, 1, PHPExcel_Shared_Date::PHPToExcel( '2014-10-16' ));
