获取可以用GBK编码的汉字拼音首字母代码,PHP代码库,德仔网

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【PHP】获取可以用GBK编码的汉字拼音首字母
作者:罪恶的花生 / 发布于2013/12/26/ 660
拼音首字母
<?php
/**
* 中文拼音
* 目前仅支持可以以GBK编码的20902个汉字提取拼音首字母
*/
class Spell{
 //当前字符
 protected $word='';
 //资源
 protected $source = array();
 protected $pos = array();
 //运行期间数据
 protected $temp = array();
 //数据暂存标识//在运行期间多次使用时有明显效果
 protected $flag = true;
 //输入输出字符集
 protected $charset = array('in'=>'gbk','out'=>'utf-8');
 //例外处理//当没有拼音首字母other===false的情况下，返回原字串否则设置为该值
 protected $other = '!';//other=false;
 public function __construct($flag=true){
  $this->flag = $flag;
  //加载资源
  $this->source['gk221']=file_get_contents(DATA_PATH.'word/gk2-2-1.txt');
  $this->source['gk31']=file_get_contents(DATA_PATH.'word/gk3-1.txt');
  $this->source['gk41']=file_get_contents(DATA_PATH.'word/gk4-1.txt');
  $this->pos=json_decode(file_get_contents(DATA_PATH.'word/pos.txt'),true);
 }
 /**
  * 获得拼音首字母
  * @param string/arr $data 数据，可以是字符串和数组
  * @param string $in  数据的编码
  * @param string $out 输出的编码
  * @return arr    返回数组
  */
 public function getInitial($data,$in='gbk',$out='utf-8'){
  if(is_string($data)){
   return self::getInitialByStr($data,$in,$out);
  }elseif(is_array($data)){
   return self::getInitialByArr($data,$in,$out);
  }
 }
 /**
  * 获得拼音首字母
  * @param string $data 字符串数据
  * @param string $in  数据的编码
  * @param string $out 输出的编码
  * @return arr    返回数组
  */
 public function getInitialByStr($str,$in='gbk',$out='utf-8'){
  $this->charset['in'] = strtolower($in);
  $this->charset['out'] = strtolower($out);
  if($this->flag!=true){
   $this->temp['fws']= array();
  }
  switch ($this->charset['in']) {
   case 'gbk':
    return self::_getInitialInGBK($str);
    break;
   case 'utf-8':
    return self::_getInitialInUTF8($str);
    break;
   default:
    # code...
    break;
  }
  //历史数据
  if($this->flag!=true){
   unset($this->temp['fws']);
  }
 }
 /**
  * 获得拼音首字母
  * @param array $data  数组数据
  * @param string $in  数据的编码
  * @param string $out 输出的编码
  * @return arr    返回数组
  */
 public function getInitialByArr($arr,$in='gbk',$out='utf-8'){
  $this->charset['in'] = strtolower($in);
  $this->charset['out'] = strtolower($out);
  if($this->flag!=true){
   $this->temp['fws']= array();
  }
  switch ($this->charset['in']) {
   case 'gbk':
    return self::_getInitialInGBKArr($arr);
    break;
   case 'utf-8':
    return self::_getInitialInUTF8Arr($arr);
    break;
   default:
    # code...
    break;
  }
  //历史数据
  if($this->flag!=true){
   unset($this->temp['fws']);
  }
 }
 /**
  * 处理gbk编码字符串的首字母
  * @param string $str 字符串
  * @return array   数组
  */
 protected function _getInitialInGBK($str){
  //存放字符串拼音
  $w = array();
  $i = 0;
  $str_length = strlen($str); //字符串的字节数
   while ($i<$str_length){
    //得到字符串中第$i位字符的ASCII码
    $ascnum = ord($str[$i]);
    if($ascnum >= 0x81){//gbk区域
     $nstr = substr($str, $i, 2);
     $i = $i + 2;
    }else{
     $nstr = substr($str, $i, 1);
     $i = $i + 1;
    }
    $this->word = iconv('gbk','utf-8',$nstr);
    if(isset($this->temp['fws'][$nstr])){
    $w[] = $this->temp['fws'][$nstr];
   }else{
     $w[] = self::_preGetInitial($nstr);
    }
   }
  
  return $w;
 }
 /**
  * 处理gbk编码数组的首字母
  * @param array $arr 字符串单字数组
  * @return array   数组
  */
 protected function _getInitialInGBKArr($arr){
  //存放字符串拼音
  $w = array();
  foreach ($arr as $key => $word) {
   $this->word = iconv('gbk','utf-8',$word);
   if(isset($this->temp['fws'][$word])){
    $w[] = $this->temp['fws'][$word];
   }else{
     $w[] = self::_preGetInitial($word);
    }
  }
  return $w;
 }
 /**
  * 处理utf-8编码字符串的首字母
  * @param string $str 字符串
  * @return array   数组
  */
 protected function _getInitialInUTF8($str){
  //存放字符串拼音
  $w = array();
  $nstr = '';
   $i = 0;
   $str_length = strlen($str); //字符串的字节数
   while ($i<$str_length){
    $ascnum = ord($str[$i]); //得到字符串中第$i位字符的ASCII码
    if ( $ascnum >= 252){//如果ASCII位高与252
     $nstr = substr($str, $i, 6); //根据UTF-8编码规范，将6个连续的字符计为单个字符
     $i = $i + 6; //实际Byte计为6
    }elseif ( $ascnum >= 248 ){//如果ASCII位高与248
     $nstr = substr($str, $i, 5); //根据UTF-8编码规范，将5个连续的字符计为单个字符
     $i = $i + 5; //实际Byte计为5
    }elseif ( $ascnum >= 240 ){//如果ASCII位高与240
     $nstr = substr($str, $i, 4); //根据UTF-8编码规范，将4个连续的字符计为单个字符
     $i = $i + 4; //实际Byte计为4
    }elseif ( $ascnum >= 224 ){//如果ASCII位高与224
     $nstr = substr($str, $i, 3); //根据UTF-8编码规范，将3个连续的字符计为单个字符
     $i = $i + 3 ; //实际Byte计为3
    }elseif ( $ascnum >= 192 ){//如果ASCII位高与192
     $nstr = substr($str, $i, 2); //根据UTF-8编码规范，将2个连续的字符计为单个字符
     $i = $i + 2; //实际Byte计为2
    }else{//其他情况下，包括大写字母,小写字母和半角标点符号,%,&,@,m,w等
     $nstr = substr($str, $i, 1);
     $i = $i + 1; //实际的Byte数计1个
    }
    $this->word = $nstr;
    //编码转换至GBK
    $nstr = iconv('utf-8','gbk',$nstr);
    if(isset($this->temp['fws'][$nstr])){
    $w[] = $this->temp['fws'][$nstr];
   }else{
     $w[] = self::_preGetInitial($nstr);
    }
  }
  return $w;
 }
 /**
  * 处理utf-8编码数组的首字母
  * @param array $arr 字符串单字数组
  * @return array   数组
  */
 protected function _getInitialInUTF8Arr($arr){
  //存放字符串拼音
  $w = array();
  foreach ($arr as $key => $word) {
   $this->word = $word;
   $nword = iconv('utf-8','GBK',$word);
   if(isset($this->temp['fws'][$nword])){
    $w[] = $this->temp['fws'][$nword];
   }else{
     $w[] = self::_preGetInitial($nword);
    }
  }
  return $w;
 }
 /**
  * 对单字预处理
  * @param string $word 单字,gbk编码
  * @return string   拼音首字母,编码视$this->charset['out']
  */
 protected function _preGetInitial($word){
  $fw = self::_getInitial($word);//返回的utf-8编码数据首字母
  if($fw!==false){
   $nstr=$this->temp['fws'][$word]=iconv('utf-8',$this->charset['out'],$fw);
  }else{
   $nstr=$this->temp['fws'][$word]=iconv('gbk',$this->charset['out'],$word);
  }
  return $nstr;
 }
 /**
  * 获得汉字拼音首字母的核心函数
  * @param string $word 单字,gbk编码
  * @return string    首字母,utf-8编码
  */
 protected function _getInitial($word){
  $high = ord($word{0});
  $low = ord($word{1});
  //对20902个汉字支持拼音首字母提取
  $hexc = $high * 256 + $low;
  //GBK/2:gb2312汉字表(拼音排序),低位a0开始
  if($hexc >= 0xB0A1 and $hexc <= 0xD7F9 and $low>=0xA0){
   //共3755个字
   return self::_getInGBK21($hexc);
  }
  //GBK/2:gb2312汉字表,低位a0开始
  if($hexc >= 0xD8A1 and $hexc <= 0xF7FE and $low>=0xA0){
   //共3008个字
   return self::_getInGBK('gk221');
  }
  //GBK/3:扩充汉字表(UCS 代码大小排列)
  if($hexc >= 0x8140 and $hexc <= 0xA0FE){
   //共6080个字
   return self::_getInGBK('gk31');
  }
  //GBK/4:扩充汉字表(按康熙字典的页码/字位排列)
  //低位00开始
  if($hexc >= 0xAA40 and $hexc <= 0xFEA0){
   //共8059个字
   return self::_getInGBK('gk41');
  }
  //都没有
  return $this->other;
 }
 /**
  * 获取首字母
  * GBK/2:gb2312汉字表(拼音序)
  * 共3755个字
  * @param int $hexc 单字GBK编码值
  * @return string   首字母,utf-8编码
  */
 protected function _getInGBK21($hexc){
  //无i,u,v开始的拼音
  $char = array("",//填充位置
   "A","B","C","D","E","F",
   "G","H","J","K","L","M",
   "N","O","P","Q","R","S",
   "T","W","X","Y","Z"
   );
  $hcs = array(
   0xB0A1,0xb0c5,0xb2c1,0xb4ee,0xb6ea,0xb7a2,
   0xb8c1,0xb9fe,0xbbf7,0xbfa6,0xc0ac,0xc2e8,
   0xc4c3,0xc5b6,0xc5be,0xc6da,0xc8bb,0xc8f6,
   0xcbfa,0xcdda,0xcef4,0xd1b9,0xd4d1
   );
  if($key=array_search($hexc,$hcs)){
   return $char[$key];
  }else{
   $hcs[] = $hexc;
   sort($hcs);
   return $char[array_search($hexc,$hcs)];
  }
 }
 /**
  * 获取首字母
  * @param string $type 单字所属GBK区域类型
  * @return string   首字母,utf-8编码
  */
 protected function _getInGBK($type){
  //无i,u,v开始的拼音
  $char = array("",//填充位置
   "A","B","C","D","E","F",
   "G","H","J","K","L","M",
   "N","O","P","Q","R","S",
   "T","W","X","Y","Z"
   );
  $str = str_replace("\r\n",'',$this->source[$type]);
  $p = stripos($str,$this->word)+3;//居右//stripos($str,$word),居左
  $str = '';
  if($key=array_search($p,$this->pos[$type])){
   return $char[$key];
  }else{
   $pos = $this->pos[$type];
   $pos[] = $p;
   sort($pos);
   return $char[array_search($p,$pos)];
  }
 }
}
?>



使用示例



<?php
define('DATA_PATH',__DIR__.'/');
$t1 = microtime(true);
$py = new Spell();
$str =file_get_contents(DATA_PATH.'test/18.txt');
$r = $py->getInitial($str,'utf-8','utf-8');
$t2 = microtime(true);
echo $t2.'';
echo intval(($t2-$t1)*1000),'毫秒';

exit;

define('DATA_PATH',__DIR__.'/');
$t1 = microtime(true);
$py = new Spell();
$str =file_get_contents(DATA_PATH.'test/18-gbk.txt');
$r = $py->getInitial($str,'gbk','utf-8');
$t2 = microtime(true);
echo $t2.'';
echo intval(($t2-$t1)*1000),'毫秒';
?>
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