php 读取csv 乱码

在php手册里面有这样一个例子,为什么读出的是乱码
<?php
$row = 1;
$handle = fopen("test.csv","r");
while ($data = fgetcsv($handle, 1000, ",")) {
    $num = count($data);
    echo "<p> $num fields in line $row: <br>\n";
    $row++;
    for ($c=0; $c < $num; $c++) {
        echo $data[$c] . "<br>\n";
    }
}
fclose($handle);
?> 

解决方法：把CSV文件另存为UTF-8的格式就可以了。