汉字转化为拼音类

<?php
/*
汉字转化为拼音类
 */
class Pinyin{
	
	/**
	 * 汉字ASCII码库
	 * 
	 * @var array
	 */
	protected $lib;
	
	
	/**
	 * 构造函数
	 * 
	 * @return void
	 */
	public function __construct(){
		
	}
	/**
	 * 汉字转化并输出拼音
	 * 
	 * @param string $str		所要转化拼音的汉字
	 * @param boolean $utf8 	汉字编码是否为utf8
	 * @return string
	 */
	public function output($str, $utf8 = true)
	{		
		//参数分析
		if (!$str) {
			return false;
		}
		
		//编码转换.
		$str = ($utf8==true) ? $this->iconvStr('utf-8', 'gbk', $str) : $str;
		$num = strlen($str);
		
		$pinyin = '';
		for ($i=0; $i<$num; $i++) {
			$temp = ord(substr($str, $i, 1));
			if ($temp>160) {				
				$temp2=ord(substr($str,++$i,1));
				$temp=$temp*256+$temp2-65536;
			}
			$pinyin .= $this->num2str($temp);
		}
				
		//输出的拼音编码转换.
		return ($utf8==true) ? $this->iconvStr('gbk', 'utf-8', $pinyin) : $pinyin;
	}
	/**
	 * 将ASCII编码转化为字符串.
	 * 
	 * @param integer $num
	 * @return string
	 */
	protected function num2str($num) {		
		
		if (!$this->lib) {			
			$this->parse_lib();
		}
				
		if ($num>0&&$num<160) {	
			
   			return chr($num);
		} elseif($num<-20319||$num>-10247) {
			
			return '';
		} else{
			$total =sizeof($this->lib)-1;
			for($i=$total; $i>=0; $i--) {
				if($this->lib[$i][1]<=$num) {					
					break;
				}
			}
			
			return $this->lib[$i][0];
		}
	}

	/**
	 * 返回汉字编码库
	 * 
	 * @return array
	 */
	protected function parse_lib() {
		
		return $this->lib = 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("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),
		);
	}
	
	//编码转换
	protected function iconvStr($from,$to,$fContents)
	{
			if(is_string($fContents) ) 
			{
				if(function_exists('mb_convert_encoding'))
				{
					return mb_convert_encoding ($fContents, $to, $from);
				}
				else if(function_exists('iconv'))
				{
					return iconv($from,$to,$fContents);
				}
				else
				{
					return $fContents;
				}
		}
	}
	/**
	 * 析构函数
	 * 
	 * @access public
	 * @return void
	 */
	public function __destruct()
	{		
		if (isset($this->lib)) {
			unset($this->lib);
		}
	}
}
?>