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PHP XLS Reader is writing extra columns

I Have a function that reads a xls on php, transforms it, and returns it in csv, heres the html <!DOCTYPE html> <html> <head> <title>Import</title> </head> <body> <h1>File upload</h1> <form method="POST" action="process.php" enctype="multipart/form-data"> <label>File</label> <input type="file" name="arquivo"><br><br> <input type="submit" value="send">…

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How to download xlsx file in laravel?

I use the library as a means of generating Excel documents. Only I need to either save the file to the root/storage/app/public/export/file.xlsx directory, or immediately download the file in the browser. Everything is implemented in Laravel 9. Tell me how…

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