Convert .xlsx file to .csv file using PHP

I'm looking for a low overhead way to convert a .xlsx file to a .csv file using PHP without consuming excess memory or loading extraneous classes. Anyone?

How do I create a CSV file in PHP?

To convert an array into a CSV file we can use fputcsv() function. The fputcsv() function is used to format a line as CSV (comma separated values) file and writes it to an open file.

How can I open XLSX file in PHP?

Read an Excel File (XLSX) Open the XSLX file with $reader->open($path) Browse each Sheet of the spreadsheet with $reader->getSheetIterator() Browse each Row of the Sheet with $sheet->getRowIterator() Browse each Cell of the Row with $row->getCells()

You can read XLSX files with PHP using PhpSpreadsheet. From there, you only need to figure out the destination format.