How can I write data into an excel using PHP?

You can try and create a CSV file, like this:

name;surname;blabla
name;surname;blabla
name;surname;blabla
name;surname;blabla

Excel should eat this :)

It is convenient to use PHP CVS functions: http://php.net/manual/en/function.fputcsv.php

You can use the PhpSpreadsheet library, to read an existing Excel file, add new rows/columns to it, then write it back as a real Excel file.

Disclaimer: I am one of the authors of this library.

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