一、公司同事整理的类,挺实用的.相信拿出来分享下他不会介意的O(∩_∩)O.不过如果首字母是数字或英文会有些问题.
复制代码代码如下:/*** Helper_Spell 汉字拼音首字母工具类** @category Helper* @package Helper_Spell* @author Lancer* @version 1.0* @see Translation_Big2gb*/class Helper_Spell {/*** $_pinyins* @var array* @access private*/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',215249 => 'Z',);/*** $_charset* @var string* @access private*/private $_charset = null;/*** __construct 构造函数, 指定需要的编码 default: utf-8 支持utf-8, gb2312** @param unknown_type $charset*/public function __construct( $charset = 'utf-8' ) {$this->_charset = $charset;}/*** getInitialsFirst 返回首个汉字的拼音** @access public* @static* @param string $str* @return string* @example Helper_Spell::getInitialsFirst('我的爱'); => w*/public static function getInitialsFirst( $str, $charset = 'utf-8' ) {$chars = array('A','B','C','D','E','F','G','H','I','J','K','L','M','N','O','P','Q','R','S','T','U','V','W','X','Y','Z');$string = self::getInitials( $str );$length = strlen($string);for($i=0; $i if ( in_array( $string{$i}, $chars ) ) {return $string{$i};}}return '*';}/*** getInitials 返回拼音组合** @access public* @static* @param string $str* @return string* @example Helper_Spell::getInitials('我的爱'); => wda*/public static function getInitials( $str, $charset = 'utf-8' ) {$instance = new Helper_Spell( $charset );return $instance->_getInitials( $str );}/*** _getInitials 获取中文字串的拼音首字符* 注：英文的字串：不变返回(包括数字) eg .abc123 => abc123* 中文字符串：返回拼音首字符 eg. 王小明 => WXM* 中英混合串: 返回拼音首字符和英文 eg. 我i我j => WIWJ** @access private* @param string $str* @return string*/private function _getInitials( $str, $translation=TRUE ){if ( empty($str) ) return '';if ( $this->_isAscii($str[0]) && $this->_isAsciis( $str ))return $str;if ( $translation )$str = Translation_Big2gb::big2gb( $str );$result = array();if ( $this->_charset == 'utf-8' ){//IGNORE很重要，加上这个就可以是ICONV()函数忽略错误，继续执行$str = iconv( 'utf-8', 'gbk//IGNORE', $str );}$words = $this->_cutWord( $str );foreach ( $words AS $word ) {if ( $this->_isAscii($word) ) {//非中文$result[] = $word;continue;}$code = ( ord(substr($word,0,1)) ) * 1000 + (ord(substr($word,1,1)));//获取拼音首字母A--Zif ( ($i = $this->_search($code)) != -1 ){$result[] = $this->_pinyins[$i];}}return strtoupper(implode('', $result));}/*** _msubstr 获取中文字符串** @access private* @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 if ( $i >= $start && $i if ( ord(substr($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;}/*** _cutWord 字符串切分为数组 (汉字或者一个字符为单位)** @access private* @param string $str* @return array*/private function _cutWord( $str ) {$words = array();while ( $str != "" ) {if ( $this->_isAscii($str) ) {//非中文$words[] = $str[0];$str = substr( $str, strlen($str[0]) );} else {$word = $this->_msubstr( $str, 0, 1 );$words[] = $word;$str = substr( $str, strlen($word) );}}return $words;}/*** _isAscii 判断字符是否是ascii字符** @access private* @param string $char* @return bool*/private function _isAscii( $char ) {return ( ord( substr($char,0,1) ) }/*** _isAsciis 判断字符串前3个字符是否是ascii字符** @access private* @param string $str* @return bool*/private function _isAsciis( $str ) {$len = strlen($str) >= 3 ? 3: 2;$chars = array();for( $i = 1; $i $chars[] = $this->_isAscii( $str[$i] ) ? 'yes':'no';}$result = array_count_values( $chars );if ( empty($result['no']) ){return true;}return false;}/*** _getChar 通过ASC码返回字母或者数字** @access private* @param string $ascii* @return string*/private function _getChar( $ascii ){if ( $ascii >= 48 && $ascii return chr($ascii); //数字} elseif ( $ascii>=65 && $ascii return chr($ascii); // A--Z} elseif ($ascii>=97 && $ascii return chr($ascii-32); // a--z} else {return '~'; //其他}}/*** _search 查找需要的汉字内码(gb2312) 对应的拼音字符(二分法)** @access private* @param int $code* @return int*/private function _search( $code ) {$data = array_keys($this->_pinyins);$lower = 0;$upper = sizeof($data)-1;// 排除非一级汉字if ($code $data[23]) return -1;for (;;) {if ( $lower > $upper ){return $data[$lower-1];}$middle = (int) round(($lower + $upper) / 2);if ( !isset($data[$middle]) ) {return -1;}if ( $data[$middle] $lower = (int)$middle + 1;} else if ( $data[$middle] == $code ) {return $data[$middle];} else {$upper = (int)$middle - 1;}}// end for}}
二、用来得到中文的首字母
这个是将中文转换为拼音的类:charset复制代码代码如下:php/*** 汉字转化为拼音，拼音转化为汉字**/ class charset{private $_code=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'),array("ca",'-19775'),array("cai",'-19774'),array("can",'-19763'),array("cang",'-19756'),array("cao",'-19751'),array("ce",'-19746'),array("ceng",'-19741'),array("cha",'-19739'),array("chai",'-19728'),array("chan",'-19725'),array("chang",'-19715'),array("chao",'-19540'),array("che",'-19531'),array("chen",'-19525'),array("cheng",'-19515'),array("chi",'-19500'),array("chong",'-19484'),array("chou",'-19479'),array("chu",'-19467'),array("chuai",'-19289'),array("chuan",'-19288'),array("chuang",'-19281'),array("chui",'-19275'),array("chun",'-19270'),array("chuo",'-19263'),array("ci",'-19261'),array("cong",'-19249'),array("cou",'-19243'),array("cu",'-19242'),array("cuan",'-19238'),array("cui",'-19235'),array("cun",'-19227'),array("cuo",'-19224'),array("da",'-19218'),array("dai",'-19212'),array("dan",'-19038'),array("dang",'-19023'),array("dao",'-19018'),array("de",'-19006'),array("deng",'-19003'),array("di",'-18996'),array("dian",'-18977'),array("diao",'-18961'),array("die",'-18952'),array("ding",'-18783'),array("diu",'-18774'),array("dong",'-18773'),array("dou",'-18763'),array("du",'-18756'),array("duan",'-18741'),array("dui",'-18735'),array("dun",'-18731'),array("duo",'-18722'),array("e",'-18710'),array("en",'-18697'),array("er",'-18696'),array("fa",'-18526'),array("fan",'-18518'),array("fang",'-18501'),array("fei",'-18490'),array("fen",'-18478'),array("feng",'-18463'),array("fo",'-18448'),array("fou",'-18447'),array("fu",'-18446'),array("ga",'-18239'),array("gai",'-18237'),array("gan",'-18231'),array("gang",'-18220'),array("gao",'-18211'),array("ge",'-18201'),array("gei",'-18184'),array("gen",'-18183'),array("geng",'-18181'),array("gong",'-18012'),array("gou",'-17997'),array("gu",'-17988'),array("gua",'-17970'),array("guai",'-17964'),array("guan",'-17961'),array("guang",'-17950'),array("gui",'-17947'),array("gun",'-17931'),array("guo",'-17928'),array("ha",'-17922'),array("hai",'-17759'),array("han",'-17752'),array("hang",'-17733'),array("hao",'-17730'),array("he",'-17721'),array("hei",'-17703'),array("hen",'-17701'),array("heng",'-17697'),array("hong",'-17692'),array("hou",'-17683'),array("hu",'-17676'),array("hua",'-17496'),array("huai",'-17487'),array("huan",'-17482'),array("huang",'-17468'),array("hui",'-17454'),array("hun",'-17433'),array("huo",'-17427'),array("ji",'-17417'),array("jia",'-17202'),array("jian",'-17185'),array("jiang",'-16983'),array("jiao",'-16970'),array("jie",'-16942'),array("jin",'-16915'),array("jing",'-16733'),array("jiong",'-16708'),array("jiu",'-16706'),array("ju",'-16689'),array("juan",'-16664'),array("jue",'-16657'),array("jun",'-16647'),array("ka",'-16474'),array("kai",'-16470'),array("kan",'-16465'),array("kang",'-16459'),array("kao",'-16452'),array("ke",'-16448'),array("ken",'-16433'),array("keng",'-16429'),array("kong",'-16427'),array("kou",'-16423'),array("ku",'-16419'),array("kua",'-16412'),array("kuai",'-16407'),array("kuan",'-16403'),array("kuang",'-16401'),array("kui",'-16393'),array("kun",'-16220'),array("kuo",'-16216'),array("la",'-16212'),array("lai",'-16205'),array("lan",'-16202'),array("lang",'-16187'),array("lao",'-16180'),array("le",'-16171'),array("lei",'-16169'),array("leng",'-16158'),array("li",'-16155'),array("lia",'-15959'),array("lian",'-15958'),array("liang",'-15944'),array("liao",'-15933'),array("lie",'-15920'),array("lin",'-15915'),array("ling",'-15903'),array("liu",'-15889'),array("long",'-15878'),array("lou",'-15707'),array("lu",'-15701'),array("lv",'-15681'),array("luan",'-15667'),array("lue",'-15661'),array("lun",'-15659'),array("luo",'-15652'),array("ma",'-15640'),array("mai",'-15631'),array("man",'-15625'),array("mang",'-15454'),array("mao",'-15448'),array("me",'-15436'),array("mei",'-15435'),array("men",'-15419'),array("meng",'-15416'),array("mi",'-15408'),array("mian",'-15394'),array("miao",'-15385'),array("mie",'-15377'),array("min",'-15375'),array("ming",'-15369'),array("miu",'-15363'),array("mo",'-15362'),array("mou",'-15183'),array("mu",'-15180'),array("na",'-15165'),array("nai",'-15158'),array("nan",'-15153'),array("nang",'-15150'),array("nao",'-15149'),array("ne",'-15144'),array("nei",'-15143'),array("nen",'-15141'),array("neng",'-15140'),array("ni",'-15139'),array("nian",'-15128'),array("niang",'-15121'),array("niao",'-15119'),array("nie",'-15117'),array("nin",'-15110'),array("ning",'-15109'),array("niu",'-14941'),array("nong",'-14937'),array("nu",'-14933'),array("nv",'-14930'),array("nuan",'-14929'),array("nue",'-14928'),array("nuo",'-14926'),array("o",'-14922'),array("ou",'-14921'),array("pa",'-14914'),array("pai",'-14908'),array("pan",'-14902'),array("pang",'-14894'),array("pao",'-14889'),array("pei",'-14882'),array("pen",'-14873'),array("peng",'-14871'),array("pi",'-14857'),array("pian",'-14678'),array("piao",'-14674'),array("pie",'-14670'),array("pin",'-14668'),array("ping",'-14663'),array("po",'-14654'),array("pu",'-14645'),array("qi",'-14630'),array("qia",'-14594'),array("qian",'-14429'),array("qiang",'-14407'),array("qiao",'-14399'),array("qie",'-14384'),array("qin",'-14379'),array("qing",'-14368'),array("qiong",'-14355'),array("qiu",'-14353'),array("qu",'-14345'),array("quan",'-14170'),array("que",'-14159'),array("qun",'-14151'),array("ran",'-14149'),array("rang",'-14145'),array("rao",'-14140'),array("re",'-14137'),array("ren",'-14135'),array("reng",'-14125'),array("ri",'-14123'),array("rong",'-14122'),array("rou",'-14112'),array("ru",'-14109'),array("ruan",'-14099'),array("rui",'-14097'),array("run",'-14094'),array("ruo",'-14092'),array("sa",'-14090'),array("sai",'-14087'),array("san",'-14083'),array("sang",'-13917'),array("sao",'-13914'),array("se",'-13910'),array("sen",'-13907'),array("seng",'-13906'),array("sha",'-13905'),array("shai",'-13896'),array("shan",'-13894'),array("shang",'-13878'),array("shao",'-13870'),array("she",'-13859'),array("shen",'-13847'),array("sheng",'-13831'),array("shi",'-13658'),array("shou",'-13611'),array("shu",'-13601'),array("shua",'-13406'),array("shuai",'-13404'),array("shuan",'-13400'),array("shuang",'-13398'),array("shui",'-13395'),array("shun",'-13391'),array("shuo",'-13387'),array("si",'-13383'),array("song",'-13367'),array("sou",'-13359'),array("su",'-13356'),array("suan",'-13343'),array("sui",'-13340'),array("sun",'-13329'),array("suo",'-13326'),array("ta",'-13318'),array("tai",'-13147'),array("tan",'-13138'),array("tang",'-13120'),array("tao",'-13107'),array("te",'-13096'),array("teng",'-13095'),array("ti",'-13091'),array("tian",'-13076'),array("tiao",'-13068'),array("tie",'-13063'),array("ting",'-13060'),array("tong",'-12888'),array("tou",'-12875'),array("tu",'-12871'),array("tuan",'-12860'),array("tui",'-12858'),array("tun",'-12852'),array("tuo",'-12849'),array("wa",'-12838'),array("wai",'-12831'),array("wan",'-12829'),array("wang",'-12812'),array("wei",'-12802'),array("wen",'-12607'),array("weng",'-12597'),array("wo",'-12594'),array("wu",'-12585'),array("xi",'-12556'),array("xia",'-12359'),array("xian",'-12346'),array("xiang",'-12320'),array("xiao",'-12300'),array("xie",'-12120'),array("xin",'-12099'),array("xing",'-12089'),array("xiong",'-12074'),array("xiu",'-12067'),array("xu",'-12058'),array("xuan",'-12039'),array("xue",'-11867'),array("xun",'-11861'),array("ya",'-11847'),array("yan",'-11831'),array("yang",'-11798'),array("yao",'-11781'),array("ye",'-11604'),array("yi",'-11589'),array("yin",'-11536'),array("ying",'-11358'),array("yo",'-11340'),array("yong",'-11339'),array("you",'-11324'),array("yu",'-11303'),array("yuan",'-11097'),array("yue",'-11077'),array("yun",'-11067'),array("za",'-11055'),array("zai",'-11052'),array("zan",'-11045'),array("zang",'-11041'),array("zao",'-11038'),array("ze",'-11024'),array("zei",'-11020'),array("zen",'-11019'),array("zeng",'-11018'),array("zha",'-11014'),array("zhai",'-10838'),array("zhan",'-10832'),array("zhang",'-10815'),array("zhao",'-10800'),array("zhe",'-10790'),array("zhen",'-10780'),array("zheng",'-10764'),array("zhi",'-10587'),array("zhong",'-10544'),array("zhou",'-10533'),array("zhu",'-10519'),array("zhua",'-10331'),array("zhuai",'-10329'),array("zhuan",'-10328'),array("zhuang",'-10322'),array("zhui",'-10315'),array("zhun",'-10309'),array("zhuo",'-10307'),array("zi",'-10296'),array("zong",'-10281'),array("zou",'-10274'),array("zu",'-10270'),array("zuan",'-10262'),array("zui",'-10260'),array("zun",'-10256'),array("zuo",'-10254'));//拼音转化函数function PinYin($str){$ret="";for($i=0;$i$p=ord(substr($str,$i,1)); //查看ASCII码if($p>160){ //如果是中文，再多截取一个字符$q=ord(substr($str,++$i,1));$p=$p*256+$q-65536;}$ret.=$this->convert($p);}return $ret;}//转化函数function convert($num){if($num>0&&$num return chr($num);}elseif($num"-10247"){return "";}else{ //汉字，查找对应拼音for($i=count($this->_code)-1;$i>=0;$i--){if($this->_code[$i][1] break;}return substr($this->_code[$i][0],0,1);}}}下面这个是用来测试代码的:复制代码代码如下:php
PinYin(mb_convert_encoding($val,'gbk','utf-8'))));echo '';}三、这是网上找到个一个方法,经过测试可以正常使用,但对一些生僻字或者特殊字符会有问题.
复制代码代码如下:function getFirstCharter($str){if(empty($str)){return '';}$fchar=ord($str{0});if($fchar>=ord('A')&&$fchar $s1=iconv('UTF-8','gb2312',$str);$s2=iconv('gb2312','UTF-8',$s1);$s=$s2==$str?$s1:$str;$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 null;}