为什么php获取不到首字母X 如下：只能得到R

<?php
function getfirstchar($s0){    
    $fchar = ord($s0{0}); 
    if($fchar >= ord("A") and $fchar <= ord("z") )return strtoupper($s0{0}); 
    $s1 = iconv("UTF-8","gb2312", $s0); 
    $s2 = iconv("gb2312","UTF-8", $s1); 
    if($s2 == $s0){$s = $s1;}else{$s = $s0;} 
    $asc = ord($s{0}) * 256 + ord($s{1}) - 65536; 
    if($asc >= -20319 and $asc <= -20284) return "A"; 
    if($asc >= -20283 and $asc <= -19776) return "B"; 
    if($asc >= -19775 and $asc <= -19219) return "C"; 
    if($asc >= -19218 and $asc <= -18711) return "D"; 
    if($asc >= -18710 and $asc <= -18527) return "E"; 
    if($asc >= -18526 and $asc <= -18240) return "F"; 
    if($asc >= -18239 and $asc <= -17923) return "G"; 
    if($asc >= -17922 and $asc <= -17418) return "H"; 
    if($asc >= -17417 and $asc <= -16475) return "J"; 
    if($asc >= -16474 and $asc <= -16213) return "K"; 
    if($asc >= -16212 and $asc <= -15641) return "L"; 
    if($asc >= -15640 and $asc <= -15166) return "M"; 
    if($asc >= -15165 and $asc <= -14923) return "N"; 
    if($asc >= -14922 and $asc <= -14915) return "O"; 
    if($asc >= -14914 and $asc <= -14631) return "P"; 
    if($asc >= -14630 and $asc <= -14150) return "Q"; 
    if($asc >= -14149 and $asc <= -14091) return "R"; 
    if($asc >= -14090 and $asc <= -13319) return "S"; 
    if($asc >= -13318 and $asc <= -12839) return "T"; 
    if($asc >= -12838 and $asc <= -12557) return "W"; 
    if($asc >= -12556 and $asc <= -11848) return "X"; 
    if($asc >= -11847 and $asc <= -11056) return "Y"; 
    if($asc >= -11055 and $asc <= -10247) return "Z"; 
    return null; 
}



function pinyin1($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); 
            $ret .= getfirstchar($s2); 
        }else{ 
            $ret .= $s1; 
        } 
    } 
    return $ret; 
}

echo pinyin1('笑容');
?>

追问：谢谢哈代码贴出来嘛，谢谢

答案：那要看你数据库(MYSQL)字段使用的是GBK还是UTF8了!
或许是你上传(插入INSERT)或浏览显示(SELECT)字段时有没有混淆;
我也遇到过和你一样的情况,希望能帮到你!

其他：本人编写代码如下:

上一个：您好，请教一个问题，请问在php接收表单数据页面内怎么利用js获得复选框的value值插入到数据库内？
下一个：别人通过我的接口 向我发送 一个 SOAP 请求，是一段 XML 问题是 我怎么用php把XML 接收下来并做解析，