Method 1: According to ASCII code conversion, the GB2312 library cannot do anything about polyphonic characters.
The GB2312 standard contains a total of 6763 Chinese characters. Chinese characters that are not within the range cannot be converted, such as the character "镕" written by former Chinese Prime Minister Zhu Rongji.
In GB2312, the collected Chinese characters are "partitioned", and each zone contains 94 Chinese characters/symbols. This representation is also called location code.
Areas 01-09 are special symbols.
Areas 16-55 are first-level Chinese characters, sorted by pinyin. (3755)
Areas 56-87 are second-level Chinese characters, sorted by radical/stroke. (3008)
Areas 10-15 and 88-94 are not coded.
The occupied code bits are 72*94=6768. Among them, 5 vacancies are D7FA-D7FE. So there are actually 6763 Chinese characters in total. Among them, there are 3755 first-level Chinese characters and 3008 second-level Chinese characters. This type of algorithm can actually convert only 3755 Chinese characters.
Advantages: No large text library is used, the file is relatively small, regular expressions are not used, and the performance is relatively high. Support initial letter conversion.
Disadvantages: Chinese characters not included in GB2312 cannot be converted, and multi-phonetic characters cannot be recognized.
(If you don’t have high requirements for pinyin conversion, it is recommended to use this.)
// This type is converted based on ASCII code, and the GB2312 library cannot do anything with polyphonic characters.
// The GB2312 standard contains a total of 6763 Chinese characters. Chinese characters that are not within the range cannot be converted, such as the character "镕" written by former Chinese Prime Minister Zhu Rongji.
class pinyin{
public static function utf8_to($s, $isfirst = false) {
return self::to(self::utf8_to_gb2312($s), $isfirst);
}
public static function utf8_to_gb2312($s) {
return iconv('UTF-8', 'GB2312//IGNORE', $s);
}
// 字符串必须为GB2312编码
public static function to($s, $isfirst = false) {
$res = '';
$len = strlen($s);
$pinyin_arr = self::get_pinyin_array();
for($i=0; $i
$ascii = ord($s{$i});
if($ascii > 0x80) {
$ascii2 = ord($s{++$i});
$ascii = $ascii * 256 + $ascii2 - 65536;
}
if($ascii 0) {
if(($ascii >= 48 && $ascii = 97 && $ascii
$res .= $s{$i}; // 0-9 a-z
}elseif($ascii >= 65 && $ascii
$res .= strtolower($s{$i}); // A-Z
}else{
$res .= '_';
}
}elseif($ascii -10247) {
$res .= '_';
}else{
foreach($pinyin_arr as $py=>$asc) {
if($asc
$res .= $isfirst ? $py{0} : $py;
break;
}
}
}
}
return $res;
}
public static function to_first($s) {
$ascii = ord($s{0});
if($ascii > 0xE0) {
$s = self::utf8_to_gb2312($s{0}.$s{1}.$s{2});
}elseif($ascii
if($ascii >= 65 && $ascii
return strtolower($s{0});
}elseif($ascii >= 97 && $ascii
return $s{0};
}else{
return false;
}
}
if(strlen($s)
return false;
}
$asc = ord($s{0}) * 256 + ord($s{1}) - 65536;
if($asc>=-20319 && $asc
if($asc>=-20283 && $asc
if($asc>=-19775 && $asc
if($asc>=-19218 && $asc
if($asc>=-18710 && $asc
if($asc>=-18526 && $asc
if($asc>=-18239 && $asc
if($asc>=-17922 && $asc
if($asc>=-17417 && $asc
if($asc>=-16474 && $asc
if($asc>=-16212 && $asc
if($asc>=-15640 && $asc
if($asc>=-15165 && $asc
if($asc>=-14922 && $asc
if($asc>=-14914 && $asc
if($asc>=-14630 && $asc
if($asc>=-14149 && $asc
if($asc>=-14090 && $asc
if($asc>=-13318 && $asc
if($asc>=-12838 && $asc
if($asc>=-12556 && $asc
if($asc>=-11847 && $asc
if($asc>=-11055 && $asc
return false;
}
public static function get_pinyin_array() {
static $py_arr;
if(isset($py_arr)) return $py_arr;
$k, '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';
$v = '-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';
$key = explode('|', $k);
$val = explode('|', $v);
$py_arr = array_combine($key, $val);
arsort($py_arr);
return $py_arr;
}
}
/*
var_dump(0xE0);
for($i=0; $i
var_dump("$i :". chr($i));
}
*/
var_dump(pinyin::utf8_to('PHP Chinese characters to pinyin'));
var_dump(pinyin::utf8_to('GB2312 standard contains a total of 6763 Chinese characters. Chinese characters that are not within the range cannot be converted, such as the word "镕" by former Chinese Prime Minister Zhu Rongji.'));
var_dump(pinyin::utf8_to(''1234567890-=QWERTYUIOP[]ASDFGHJKL;ZXCVBNM,./abcdefghijklmnopqrstuvwxyz'));
var_dump(pinyin::utf8_to('PHP Chinese character to pinyin type', 1));
var_dump(pinyin::utf8_to('The GB2312 standard contains a total of 6763 Chinese characters. Chinese characters that are not within the range cannot be converted, such as: the word "镕" by former Chinese Prime Minister Zhu Rongji.', 1));
var_dump(pinyin::utf8_to('`1234567890-=QWERTYUIOP[]ASDFGHJKL;ZXCVBNM,./abcdefghijklmnopqrstuvwxyz', 1));
var_dump(pinyin::to_first('PHP Chinese characters to pinyin'));
var_dump(pinyin::to_first('The GB2312 standard contains a total of 6763 Chinese characters. Chinese characters that are not within the range cannot be converted, such as: the word "镕" for former Chinese Prime Minister Zhu Rongji.'));
var_dump(pinyin::to_first('▂`1234567890-=QWERTYUIOP[]ASDFGHJKL;ZXCVBNM,./abcdefghijklmnopqrstuvwxyz'));
?>
Method 2: Array retrieval based on pinyin combination
class pinyin{
private $d=array(
array("a",-20319),
array("ai",-20317),
array("an",-20304),
array("ang",-20295),
array("ao",-20292),
array("ba",-20283),
array("bai",-20265),
array("ban",-20257),
array("bang",-20242),
array("bao",-20230),
array("bei",-20051),
array("ben",-20036),
array("beng",-20032),
array("bi",-20026),
array("bian",-20002),
array("biao",-19990),
array("bie",-19986),
array("bin",-19982),
array("bing",-19976),
array("bo",-19805),
array("bu",-19784),
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