In-case anyone is having difficulty working around Byte-order-marks, the following should work. As usual no warranty, you should test your code... It's for UTF-8 only
 <?php
 //...
 $fh = fopen('wut.csv', 'r');
 $firstThreeBytes = fread($fh , 3);
 if($firstThreeBytes !== "\xef\xbb\xbf") {
 rewind($fh);
 }
 while(($row = fgetcsv($fh, 10000, ',')) !== false) {
 // Your code here
 }
This basically reads 3 bytes and checks if they match
https://en.wikipedia.org/wiki/Byte_order_mark has more information if you are dealing with other code-pages