php程序如何把中文字符轉換爲拼音

爲了做數據庫的拼音關鍵字搜素想起了 把產品名稱生成拼音做爲關鍵字存入數據庫，於是上網蒐集資料整了個這麼個東西

<?php
/**
 * 中文拼音轉換類
 * @author julian.song
 * 部分代碼來源與互聯網，版權歸原作者所有
 */
class Pinyin{
    public function __construct()
    {

    }
    /**
     * 把字符串轉換爲拼音
     * @param  $string ASCII碼
     * @param  $charset 編碼
     */
    public function getPinyin($string, $charset='gb2312')
    {
        $dataKey = "a|ai|an|ang|ao|ba|bai|ban|bang|bao|bei|ben|beng|bi|bian|biao|bie|bin|bing|bo|bu|ca|cai|can|cang|cao|ce|ceng|cha".
"|chai|chan|chang|chao|che|chen|cheng|chi|chong|chou|chu|chuai|chuan|chuang|chui|chun|chuo|ci|cong|cou|cu|".
"cuan|cui|cun|cuo|da|dai|dan|dang|dao|de|deng|di|dian|diao|die|ding|diu|dong|dou|du|duan|dui|dun|duo|e|en|er".
"|fa|fan|fang|fei|fen|feng|fo|fou|fu|ga|gai|gan|gang|gao|ge|gei|gen|geng|gong|gou|gu|gua|guai|guan|guang|gui".
"|gun|guo|ha|hai|han|hang|hao|he|hei|hen|heng|hong|hou|hu|hua|huai|huan|huang|hui|hun|huo|ji|jia|jian|jiang".
"|jiao|jie|jin|jing|jiong|jiu|ju|juan|jue|jun|ka|kai|kan|kang|kao|ke|ken|keng|kong|kou|ku|kua|kuai|kuan|kuang".
"|kui|kun|kuo|la|lai|lan|lang|lao|le|lei|leng|li|lia|lian|liang|liao|lie|lin|ling|liu|long|lou|lu|lv|luan|lue".
"|lun|luo|ma|mai|man|mang|mao|me|mei|men|meng|mi|mian|miao|mie|min|ming|miu|mo|mou|mu|na|nai|nan|nang|nao|ne".
"|nei|nen|neng|ni|nian|niang|niao|nie|nin|ning|niu|nong|nu|nv|nuan|nue|nuo|o|ou|pa|pai|pan|pang|pao|pei|pen".
"|peng|pi|pian|piao|pie|pin|ping|po|pu|qi|qia|qian|qiang|qiao|qie|qin|qing|qiong|qiu|qu|quan|que|qun|ran|rang".
"|rao|re|ren|reng|ri|rong|rou|ru|ruan|rui|run|ruo|sa|sai|san|sang|sao|se|sen|seng|sha|shai|shan|shang|shao|".
"she|shen|sheng|shi|shou|shu|shua|shuai|shuan|shuang|shui|shun|shuo|si|song|sou|su|suan|sui|sun|suo|ta|tai|".
"tan|tang|tao|te|teng|ti|tian|tiao|tie|ting|tong|tou|tu|tuan|tui|tun|tuo|wa|wai|wan|wang|wei|wen|weng|wo|wu".
"|xi|xia|xian|xiang|xiao|xie|xin|xing|xiong|xiu|xu|xuan|xue|xun|ya|yan|yang|yao|ye|yi|yin|ying|yo|yong|you".
"|yu|yuan|yue|yun|za|zai|zan|zang|zao|ze|zei|zen|zeng|zha|zhai|zhan|zhang|zhao|zhe|zhen|zheng|zhi|zhong|".
"zhou|zhu|zhua|zhuai|zhuan|zhuang|zhui|zhun|zhuo|zi|zong|zou|zu|zuan|zui|zun|zuo";

        $dataValue = "-20319|-20317|-20304|-20295|-20292|-20283|-20265|-20257|-20242|-20230|-20051|-20036|-20032|-20026|-20002|-19990".
"|-19986|-19982|-19976|-19805|-19784|-19775|-19774|-19763|-19756|-19751|-19746|-19741|-19739|-19728|-19725".
"|-19715|-19540|-19531|-19525|-19515|-19500|-19484|-19479|-19467|-19289|-19288|-19281|-19275|-19270|-19263".
"|-19261|-19249|-19243|-19242|-19238|-19235|-19227|-19224|-19218|-19212|-19038|-19023|-19018|-19006|-19003".
"|-18996|-18977|-18961|-18952|-18783|-18774|-18773|-18763|-18756|-18741|-18735|-18731|-18722|-18710|-18697".
"|-18696|-18526|-18518|-18501|-18490|-18478|-18463|-18448|-18447|-18446|-18239|-18237|-18231|-18220|-18211".
"|-18201|-18184|-18183|-18181|-18012|-17997|-17988|-17970|-17964|-17961|-17950|-17947|-17931|-17928|-17922".
"|-17759|-17752|-17733|-17730|-17721|-17703|-17701|-17697|-17692|-17683|-17676|-17496|-17487|-17482|-17468".
"|-17454|-17433|-17427|-17417|-17202|-17185|-16983|-16970|-16942|-16915|-16733|-16708|-16706|-16689|-16664".
"|-16657|-16647|-16474|-16470|-16465|-16459|-16452|-16448|-16433|-16429|-16427|-16423|-16419|-16412|-16407".
"|-16403|-16401|-16393|-16220|-16216|-16212|-16205|-16202|-16187|-16180|-16171|-16169|-16158|-16155|-15959".
"|-15958|-15944|-15933|-15920|-15915|-15903|-15889|-15878|-15707|-15701|-15681|-15667|-15661|-15659|-15652".
"|-15640|-15631|-15625|-15454|-15448|-15436|-15435|-15419|-15416|-15408|-15394|-15385|-15377|-15375|-15369".
"|-15363|-15362|-15183|-15180|-15165|-15158|-15153|-15150|-15149|-15144|-15143|-15141|-15140|-15139|-15128".
"|-15121|-15119|-15117|-15110|-15109|-14941|-14937|-14933|-14930|-14929|-14928|-14926|-14922|-14921|-14914".
"|-14908|-14902|-14894|-14889|-14882|-14873|-14871|-14857|-14678|-14674|-14670|-14668|-14663|-14654|-14645".
"|-14630|-14594|-14429|-14407|-14399|-14384|-14379|-14368|-14355|-14353|-14345|-14170|-14159|-14151|-14149".
"|-14145|-14140|-14137|-14135|-14125|-14123|-14122|-14112|-14109|-14099|-14097|-14094|-14092|-14090|-14087".
"|-14083|-13917|-13914|-13910|-13907|-13906|-13905|-13896|-13894|-13878|-13870|-13859|-13847|-13831|-13658".
"|-13611|-13601|-13406|-13404|-13400|-13398|-13395|-13391|-13387|-13383|-13367|-13359|-13356|-13343|-13340".
"|-13329|-13326|-13318|-13147|-13138|-13120|-13107|-13096|-13095|-13091|-13076|-13068|-13063|-13060|-12888".
"|-12875|-12871|-12860|-12858|-12852|-12849|-12838|-12831|-12829|-12812|-12802|-12607|-12597|-12594|-12585".
"|-12556|-12359|-12346|-12320|-12300|-12120|-12099|-12089|-12074|-12067|-12058|-12039|-11867|-11861|-11847".
"|-11831|-11798|-11781|-11604|-11589|-11536|-11358|-11340|-11339|-11324|-11303|-11097|-11077|-11067|-11055".
"|-11052|-11045|-11041|-11038|-11024|-11020|-11019|-11018|-11014|-10838|-10832|-10815|-10800|-10790|-10780".
"|-10764|-10587|-10544|-10533|-10519|-10331|-10329|-10328|-10322|-10315|-10309|-10307|-10296|-10281|-10274".
"|-10270|-10262|-10260|-10256|-10254";
        $tDataKey = explode('|', $dataKey);
        $tDataValue = explode('|', $dataValue);

        $data = (PHP_VERSION>='5.0') ? array_combine($tDataKey, $tDataValue) : $this->arrayCombine($tDataKey, $tDataValue);
        arsort($data);
        reset($data);
        if($charset != 'gb2312') $string = $this->utf82GB2312($string);
        $res = '';
        for($i=0; $i<strlen($string); $i++)
        {
            $asc = ord(substr($string, $i, 1));
            if($asc>160) { $q = ord(substr($string, ++$i, 1)); $asc = $asc*256 + $q - 65536; }
            $res .= $this->asc2Pinyin($asc, $data);
        }
        return preg_replace("/[^a-z0-9]*/", '', $res);
    }
    /**
     * 把ASCII碼轉換爲對應的拼音
     * @param  $asc ASCII碼
     * @param  $data ASCII碼拼音字符對照表
     */
    public function asc2Pinyin($asc, $data)
    {
        if ($asc>0 && $asc<160 ) return chr($asc);
        elseif($asc<-20319 || $asc>-10247) return '';
        else {
            foreach($data as $k=>$v){ if($v<=$asc) break; }
            return $k;
        }
    }
    /**
     * 將UFT8字符的編碼轉化爲GB2312
     * @param $char
     */
    public function utf82GB2312($char)
    {
        $string = '';
        if($char < 0x80) $string .= $char;
        elseif($char < 0x800)
        {
            $string .= chr(0xC0 | $char>>6);
            $string .= chr(0x80 | $char & 0x3F);
        }elseif($char < 0x10000){
            $string .= chr(0xE0 | $char>>12);
            $string .= chr(0x80 | $char>>6 & 0x3F);
            $string .= chr(0x80 | $char & 0x3F);
        } elseif($char < 0x200000) {
            $string .= chr(0xF0 | $char>>18);
            $string .= chr(0x80 | $char>>12 & 0x3F);
            $string .= chr(0x80 | $char>>6 & 0x3F);
            $string .= chr(0x80 | $char & 0x3F);
        }
        return iconv('UTF-8', 'GB2312//IGNORE', $string);
    }
    /**
     * 比較數組
     * @param $arr1 數組 1
     * @param $arr2 數組2
     */
    public function arrayCombine($arr1, $arr2)
    {
        for($i=0; $i<count($arr1); $i++) $res[$arr1[$i]] = $arr2[$i];
        return $res;
    }
    /**
     *獲得漢字的拼音首字母
     * @param $str 字符串
     */
    public function getInitial($str,$charset) {
        if($charset=="UTF-8")$str=$this->utf82GB2312($str);
        $asc = ord(substr($str, 0, 1));
        if ($asc < 160) {//非中文
            if ($asc >= 48 && $asc <= 57) {
                return chr($asc);  //數字
            } elseif ($asc >= 65 && $asc <= 90) {
                return chr($asc);   // A--Z
            } elseif ($asc >= 97 && $asc <= 122) {
                return chr($asc - 32); // a--z
            } else {
                return '-'; //其他
            }
        } else {//中文
            $asc = $asc * 1000 + ord(substr($str, 1, 1));
            //獲取拼音首字母A--Z
            if ($asc >= 176161 && $asc < 176197) {
                return 'A';
            } elseif ($asc >= 176197 && $asc < 178193) {
                return 'B';
            } elseif ($asc >= 178193 && $asc < 180238) {
                return 'C';
            } elseif ($asc >= 180238 && $asc < 182234) {
                return 'D';
            } elseif ($asc >= 182234 && $asc < 183162) {
                return 'E';
            } elseif ($asc >= 183162 && $asc < 184193) {
                return 'F';
            } elseif ($asc >= 184193 && $asc < 185254) {
                return 'G';
            } elseif ($asc >= 185254 && $asc < 187247) {
                return 'H';
            } elseif ($asc >= 187247 && $asc < 191166) {
                return 'J';
            } elseif ($asc >= 191166 && $asc < 192172) {
                return 'K';
            } elseif ($asc >= 192172 && $asc < 194232) {
                return 'L';
            } elseif ($asc >= 194232 && $asc < 196195) {
                return 'M';
            } elseif ($asc >= 196195 && $asc < 197182) {
                return 'N';
            } elseif ($asc >= 197182 && $asc < 197190) {
                return 'O';
            } elseif ($asc >= 197190 && $asc < 198218) {
                return 'P';
            } elseif ($asc >= 198218 && $asc < 200187) {
                return 'Q';
            } elseif ($asc >= 200187 && $asc < 200246) {
                return 'R';
            } elseif ($asc >= 200246 && $asc < 203250) {
                return 'S';
            } elseif ($asc >= 203250 && $asc < 205218) {
                return 'T';
            } elseif ($asc >= 205218 && $asc < 206244) {
                return 'W';
            } elseif ($asc >= 206244 && $asc < 209185) {
                return 'X';
            } elseif ($asc >= 209185 && $asc < 212209) {
                return 'Y';
            } elseif ($asc >= 212209) {
                return 'Z';
            } else {
                return '-';
            }
        }
    }
    /**
     * 拆分字符串爲數組
     * @param $str 字符串
     * @param $charset 編碼
     */
    public function mbStringtoArray($str,$charset) {
        $strlen=mb_strlen($str);
        while($strlen){
            $array[]=mb_substr($str,0,1,$charset);
            $str=mb_substr($str,1,$strlen,$charset);
            $strlen=mb_strlen($str);
        }
        return $array;
    }
    public function getInitials($str,$charset){
        $initials="";
        foreach($this->mbStringtoArray($str,$charset)as $char){
            $initials.=$this->getInitial($char,$charset);
        }
        return $initials;
    }
}