获取整条字符串（非纯汉字链）首个汉字拼音首字母

//获取整条字符串（非纯汉字链）首个汉字拼音首字母
function pinyin_long2($zh)
{
    $ret = "";
    $s1 = iconv("UTF-8", "gb2312", $zh);
    $s2 = iconv("gb2312", "UTF-8", $s1);

    if ($s2 == $zh) {
        $zh = $s1;
    }

    for ($i = 0; $i < strlen($zh); $i++) {
        $s1 = substr($zh, $i, 1);
        $p = ord($s1);
        if ($p > 160) {
            $s2 = substr($zh, $i++, 2);
            $ret = getFirstCharters($s2);
        } else {
            $ret = $s1;
        }
    }
    return $ret;
}