php-Chinese Pinyin first letter tool class

 Php/** * Chinese Pinyin First Letter tool class * Note: English strings: Unchanged returns (including numbers) eg. abc123 = abc123* Chinese string: Returns the phonetic first character eg. test string = cszfc* Chinese-English mixed string: Returns the pinyin first character and English eg. I i i j = wiwj* eg.* $py = new Str2py (); * * $result = $py->getinitials (' Jay Chou '); * *//Get first letter * $result = $py->GETF  Irststring (' abc '); A * $resutl = $py->getfirststring ("Jay Chou"); z**/classstr2py{Private $_pinyins=Array(        176161 = ' A ', 176197 = ' B ', 178193 = ' C ', 180238 = ' D ', 182234 = ' E ',        183162 = ' F ', 184193 = ' G ', 185254 = ' H ', 187247 = ' J ', 191166 = ' K ', 192172 = ' L ', 194232 = ' M ', 196195 = ' N ', 197182 = ' O ', 197190 = ' P ' , 198218 = ' Q ', 200187 = ' R ', 200246 = ' S ', 203250 = ' T ', 205218 = ' W ', 206244 = ' X ', 209185 = ' Y ', 212209 = ' Z ',    ); Private $_charset=NULL; /** * constructor, specify required encoding Default:utf-8 * Support UTF-8, gb2312 * * @param unknown_type $charset*/     Public function__construct ($charset= ' Utf-8 ')    {        $this->_charset =$charset; }    /** * Chinese string substr * * @param string $STR * @param int $start * @param int $len * @return String*/    Private function_MSUBSTR ($str,$start,$len)    {        $start=$start* 2; $len=$len* 2; $strlen=strlen($str); $result= '';  for($i= 0;$i<$strlen;$i++)        {            if($i>=$start&&$i< ($start+$len))            {                if(Ord(substr($str,$i, 1)) > 129)                {                    $result.=substr($str,$i, 2); }                Else                {                    $result.=substr($str,$i, 1); }            }            if(Ord(substr($str,$i, 1)) > 129)            {                $i++; }        }        return $result; }    /** * string is divided into an array (kanji or a character unit) * * @param string $str * @return Array*/    Private function_cutword ($str)    {        $words=Array();  while($str!= "")        {            if($this->_isascii ($str))            {/*Non-Chinese*/                $words[] =$str[0]; $str=substr($str,strlen($str[0])); }            Else            {                $word=$this-&GT;_MSUBSTR ($str, 0, 1); $words[] =$word; $str=substr($str,strlen($word)); }        }        return $words; }    /** * Determines if a character is an ASCII character * * @param string $char * @return bool*/    Private function_isascii ($char)    {        return(Ord(substr($char, 0, 1)) < 160 ); }    /** * Determines whether the first 3 characters of a string are ASCII characters * * @param string $STR * @return bool*/    Private function_isasciis ($str)    {        $len=strlen($str) >= 3? 3:2; $chars=Array();  for($i= 1;$i<$len-1;$i++)        {            $chars[] =$this->_isascii ($str[$i]) ? ' Yes ': ' No '; }        $result=array_count_values($chars); if(Empty($result[' No ']))        {            return true; }        return false; }    /** * get the pinyin first character of the Chinese text string * * @param string $str * @return String*/     Public functionGetinitials ($str)    {        if(Empty($str))            return''; if($this->_isascii ($str[0]) &&$this->_isasciis ($str))        {            return $str; }        $result=Array(); if($this->_charset = = ' Utf-8 ')        {            $str=Iconv(' Utf-8 ', ' gb2312 ',$str); }        $words=$this->_cutword ($str); foreach($words  as $word)        {            if($this->_isascii ($word))            {/*Non-Chinese*/                $result[] =$word; Continue; }            $code=Ord(substr($word, 0, 1)) * 1000 +Ord(substr($word, 1, 1)); /*get pinyin first letter A--z*/            if(($i=$this->_search ($code))! =-1)            {                $result[] =$this->_pinyins[$i]; }        }        return Strtoupper(implode('',$result)); }    /** * 20140624 Wangtianbao Get the first letter * @param string $str * @return String*/     Public functionGetfirststring ($str)    {        //convert Chinese into letters first        $new _string=$this->getinitials ($str); if(Empty($new _string))        {            return''; }        Else        {            return Strtoupper(substr($new _string, 0, 1)); }    }    Private function_getchar ($ascii)    {        if($ascii>= &&$ascii<= 57)        {            return CHR($ascii);/*Digital*/        }        ElseIf($ascii>= &&$ascii<= 90)        {            return CHR($ascii);/*a--z*/        }        ElseIf($ascii>= &&$ascii<= 122)        {            return CHR($ascii-32);/*a--z*/        }        Else        {            return'-';/*other*/        }    }    /** * Find the required Chinese characters (gb2312) corresponding pinyin characters (dichotomy) * * @param int $code * @return int*/    Private function_search ($code)    {        $data=Array_keys($this-_pinyins); $lower= 0; $upper=sizeof($data)-1; $middle= (int)round(($lower+$upper)/2); if($code<$data[0])            return-1;  for (;;) {            if($lower>$upper)            {                return $data[$lower-1]; }            $tmp= (int)round(($lower+$upper)/2); if(!isset($data[$tmp]))            {                return $data[$middle]; }            Else            {                $middle=$tmp; }            if($data[$middle] <$code)            {                $lower= (int)$middle+ 1; }            Else if($data[$middle] ==$code)            {                return $data[$middle]; }            Else            {                $upper= (int)$middle-1; }        }    }}

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