PHP获取汉字拼音首字母函数

先来看看怎样取得单个汉字的拼音首字母,请看下面这个函数,它支持GBK和UTF8编码:

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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;
}

以上函数返回单个汉字的拼音首字母。

当需要处理中文字符串时,只需要重新写一个函数,用来取得一串汉字的拼音首字母。

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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;
}

上面这个函数就是获取汉字拼音首字母的函数,使用示例:

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echo pinyin1('这是中文字符串');

结果输出:ZSZWZFC

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