Printing a list of files with byte order mark (BOM) character in folder :

grep -rl $’\xEF\xBB\xBF’ folderName

Removing BOM from file  :

tail –bytes=+4  fileName.php > fileName.php

Or just insert in your .php code next line :

//Set the encoding to UTF-8, so when reading files it ignores the BOM      

mb_internal_encoding('UTF-8'); 

Happy coding:)