php汉语言转拼音函数

    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  
    ?>