How to specify encoding while process csv file in PHP?

Question

<?php
$row = 1;
$handle = fopen ("test.csv","r");
while ($data = fgetcsv ($handle, 1000, ",")) {
    $num = count ($data);
    print "<p> $num fields in line $row: <br>\n";
    $row++;
    for ($c=0; $c < $num; $c++) {
        print $data[$c] . "<br>\n";
    }
}
fclose ($handle);
?> 

The above comes from php manual,but I didn't see where to specify the encoding(like utf8 or so)