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15 Δεκ 2018 · Whenever you see this error, the first thing you should do is open the file in a text editor and look for whitespace characters (space, tab, newlines, etc) at the beginning or end of file, or a BOM marker, or any obvious PHP human-readable error messages in the content of the file
2 Οκτ 2014 · I'm using phpexcel for export my query in excel file; however after I created file(which is xslx format), I can not open my file in excel. It gives "the file format or extension is not valid. Verify that the file has not been corrupted and that the file extension matches the file format of the file" error.
30 Μαρ 2020 · When I try to openning a xls file which I downloading from my application, I have this error : excel cannot open the file because the file format or file extension is not valid. Verify that the file has not been corrupted and that the file extension matches the format of the file.
21 Ιουν 2020 · Read Excel Files In PHP Using PHPSpreadSheet. Using the generated xlsx file from the tutorial Create Xlsx Files as a sample file, learn how to read xlsx files using PhpSpreadsheet in this tutorial.
28 Μαΐ 2024 · Working with Excel files requires formatting, and PHPExcel offers strong support for formatting worksheets and cells. PHPExcel may be used to format individual cells or complete worksheets with different font styles, borders, alignment, and number types.
11 Μαρ 2022 · Excel is the most used file format to share data. In this tutorial, we will learn how to read and write XLSX files in PHP with the help of examples. Last but not least, we'll parse an Excel file of 1 million lines in PHP in a very fast and memory-efficient manner.
The example code of PHPExcel exceutes successfully on my local PC, the file gets downloaded to local and is opened in Excel 2007 successfully. But using the same code on my server gives an Invalid file to excel, which when I OPEN AND REPAIR, then it opens successfully.
