php将汉字转成拼音

/**
 * exchange
 * 把GB2312的汉字,转成ASIIC码
 * $str var 这个参数传得内容是要转的汉字,这里的汉字必须是gb2312,或者gbk
 */
function exchange($str){
	$ret="";
	for($j=0;$j<160){
			$q=ord(substr($str,++$j,1));
			$p=$p*256+$q-65536;
		}
		$ret.=search_ping($p);
	}
	return $ret;
}

/**
 * search_ping
 * 把拼音和数字对应,并根据参数,找到拼音
 * $num int 汉字对应的数字
 */
function search_ping($num){
	  $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),
	  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)
	 );

echo exchange("张");