How to convert Chinese characters to pinyin and get the first letter of the word using PHP

This article mainly introduces PHP's method of converting Chinese characters into pinyin and obtaining the first letter of a word, involving PHP string and array traversal and coding conversion related operation skills. Friends in need can refer to the following

The details are as follows:

Recently, we need to develop the function of converting Chinese characters into pinyin and getting the first character and record it Haha~

class Pinyin{
  private $_outEncoding = "GB2312";
  public function getPinyin($str,$pix=' ',$code = '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->_Array_Combine( $_TDataKey, $_TDataValue );
    arsort ( $data );
    reset ( $data );
    $str = $this->safe_encoding ( $str );
    $_Res = '';
    for($i = 0; $i < strlen ( $str ); $i ++) {
      $_P = ord ( substr ( $str, $i, 1 ) );
      if ($_P > 160) {
        $_Q = ord ( substr ( $str, ++ $i, 1 ) );
        $_P = $_P * 256 + $_Q - 65536;
      }
      $_Res .= $this->_Pinyin ( $_P, $data ).$pix;
    }
    return preg_replace ( "/[^a-z0-9".$pix."]*/", &#39;&#39;, $_Res );
  }
  private function _Pinyin($_Num, $_Data) {
    if ($_Num > 0 && $_Num < 160)
      return chr ( $_Num );
    elseif ($_Num < - 20319 || $_Num > - 10247)
      return &#39;&#39;;
    else {
      foreach ( $_Data as $k => $v ) {
        if ($v <= $_Num)
          break;
      }
      return $k;
    }
  }
  public function getFirstChar($str=&#39;&#39;){
    if( !$str ) return null;
    $fchar=ord($str{0});
    if($fchar>=ord("A") and $fchar<=ord("z") )return strtoupper($str{0});
    $s= $this->safe_encoding($str);
    $asc=ord($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 $asc<=-10247)return "Z";
    return null;
  }
  function safe_encoding($string) {
    $encoding="UTF-8";
    for($i=0;$i<strlen($string);$i++) {
      if(ord($string{$i})<128) continue;
      if((ord($string{$i})&224)==224) { //第一个字节判断通过
        $char=$string{++$i};
        if((ord($char)&128)==128) { //第二个字节判断通过
          $char=$string{++$i};
          if((ord($char)&128)==128) {
            $encoding="UTF-8";
            break;
          }
        }
      }
      if((ord($string{$i})&192)==192) { //第一个字节判断通过
        $char=$string{++$i};
        if((ord($char)&128)==128) { //第二个字节判断通过
          $encoding="GB2312";
          break;
        }
      }
    }
    if(strtoupper($encoding)==strtoupper($this->_outEncoding))
      return $string;
    else
      return iconv($encoding,$this->_outEncoding,$string);
  }
  private function _Array_Combine($_Arr1, $_Arr2){
    for($i = 0; $i < count ( $_Arr1 ); $i ++)
      $_Res [$_Arr1 [$i]] = $_Arr2 [$i];
    return $_Res;
  }
}

Test The code is as follows:

$pinyin = new Pinyin();
echo $pinyin->getFirstChar("湖北武汉")."<br/>";
echo $pinyin->getPinyin("北上广")."<br/>";
echo $pinyin->getPinyin("火影")."<br/>";
echo $pinyin->getFirstChar("获得")."<br/>";
echo $pinyin->getFirstChar("TOM")."<br/>";

Running result:

H
bei shang guang 
huo ying 
H
T

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