Dans la même famille, ouvrir et décoder si besoin, en zappant le BOM

<?php
/*
 * This function was unshamefully stolen and modified from the following blog post :
 * http://www.practicalweb.co.uk/blog/08/05/18/reading-unicode-(...)
 */
function fopen_utf8($filename, $mode){
 $encoding='';
 $handle = fopen($filename, $mode);
 
 $bom = fread($handle, 2);
 $bom_size = 0;
 if($bom === chr(0xff).chr(0xfe) || $bom === chr(0xfe).chr(0xff)){
 // UTF16 Byte Order Mark present
 $encoding = 'UTF-16';
	 $bom_size = 2;
 } else {
 if( $bom_size == 0 ){
 rewind($handle);
	 $bom = fread($handle, 3);
	 if($bom === chr(0xef).chr(0xbb).chr(0xbf) ){
	 // UTF8 marker, not really byte order mark, present
	 $encoding = 'UTF-8';
	 $bom_size = 3;
	 }else{
	 rewind($handle);
	 $file_sample = fread($handle, 1000) + 'e'; //read first 1000 bytes
 // + e is a workaround for mb_string bug
 rewind($handle);
 
 $encoding = mb_detect_encoding($file_sample , 'UTF-8, UTF-7, ASCII, EUC-JP,SJIS, eucJP-win, SJIS-win, JIS, ISO-2022-JP');
	 }
	}
	
 }
 if ($encoding){
 stream_filter_append($handle, 'convert.iconv.'.$encoding.'/UTF-8');
 }
 
 fseek($handle, $bom_size);
 
 return $handle;
}
?>