Read an XML file and write out a CSV file in php.

xml-to-csv.php

<?php
  // How to open an XML file and write out it's contents as a CSV!
  // Using sample XML file here https://msdn.microsoft.com/en-us/library/ms762271(d=printer,v=vs.85).aspx
  $filexml='books.xml';
  if (file_exists($filexml)) {
    $xml = simplexml_load_file($filexml);
    $f = fopen('books.csv', 'w');
    foreach($xml->book as $book) {
      $values = array(
        'author' => $book->author,
        'title' => $book->title,
      );
      fputcsv($f, $values,',','"');
    }
    fclose($f);
  }