php汉语转拼音函数

160) { 
                        $_Q = ord(substr($_String, ++$i, 1)); $_P = $_P*256 + $_Q - 65536;
                } 
                $_Res .= _Pinyin($_P, $_Data); 
        } 
        return preg_replace("/[^a-z0-9]*/", '', $_Res); 
} 
function _Pinyin($_Num, $_Data){ 
        if($_Num>0 && $_Num<160 ){
                return chr($_Num);
        }elseif($_Num<-20319 || $_Num>-10247){
                return '';
        }else{ 
                foreach($_Data as $k=>$v){ if($v<=$_Num) break; } 
                return $k; 
        } 
}
function _U2_Utf8_Gb($_C){ 
        $_String = ''; 
        if($_C < 0x80){
                $_String .= $_C;
        }elseif($_C < 0x800) { 
                $_String .= chr(0xC0 | $_C>>6); 
                $_String .= chr(0x80 | $_C & 0x3F); 
        }elseif($_C < 0x10000){ 
                $_String .= chr(0xE0 | $_C>>12); 
                $_String .= chr(0x80 | $_C>>6 & 0x3F); 
                $_String .= chr(0x80 | $_C & 0x3F); 
        }elseif($_C < 0x200000) { 
                $_String .= chr(0xF0 | $_C>>18); 
                $_String .= chr(0x80 | $_C>>12 & 0x3F); 
                $_String .= chr(0x80 | $_C>>6 & 0x3F); 
                $_String .= chr(0x80 | $_C & 0x3F); 
        } 
        return iconv('UTF-8', 'GB2312', $_String); 
}

//测试
echo Pinyin('中文字','gb2312'); //第二个参数“1”可随意设置即为utf8编码
?>