使用PHP获取汉字的拼音(全部与首字母)

废话不多说，直接上代码：
代码如下:
<?php
class GetPingYing {
    private $pylist = array(
'a'=>-20319,
'ai'=>-20317,
'an'=>-20304,
'ang'=>-20295,
'ao'=>-20292,
'ba'=>-20283,
'bai'=>-20265,
'ban'=>-20257,
'bang'=>-20242,
'bao'=>-20230,
'bei'=>-20051,
'ben'=>-20036,
'beng'=>-20032,
'bi'=>-20026,
'bian'=>-20002,
'biao'=>-19990,
'bie'=>-19986,
'bin'=>-19982,
'bing'=>-19976,
'bo'=>-19805,
'bu'=>-19784,
'ca'=>-19775,
'cai'=>-19774,
'can'=>-19763,
'cang'=>-19756,
'cao'=>-19751,
'ce'=>-19746,
'ceng'=>-19741,
'cha'=>-19739,
'chai'=>-19728,
'chan'=>-19725,
'chang'=>-19715,
'chao'=>-19540,
'che'=>-19531,
'chen'=>-19525,
'cheng'=>-19515,
'chi'=>-19500,
'chong'=>-19484,
'chou'=>-19479,
'chu'=>-19467,
'chuai'=>-19289,
'chuan'=>-19288,
'chuang'=>-19281,
'chui'=>-19275,
'chun'=>-19270,
'chuo'=>-19263,
'ci'=>-19261,
'cong'=>-19249,
'cou'=>-19243,
'cu'=>-19242,
'cuan'=>-19238,
'cui'=>-19235,
'cun'=>-19227,
'cuo'=>-19224,
'da'=>-19218,
'dai'=>-19212,
'dan'=>-19038,
'dang'=>-19023,
'dao'=>-19018,
'de'=>-19006,
'deng'=>-19003,
'di'=>-18996,
'dian'=>-18977,
'diao'=>-18961,
'die'=>-18952,
'ding'=>-18783,
'diu'=>-18774,
'dong'=>-18773,
'dou'=>-18763,
'du'=>-18756,
'duan'=>-18741,
'dui'=>-18735,
'dun'=>-18731,
'duo'=>-18722,
'e'=>-18710,
'en'=>-18697,
'er'=>-18696,
'fa'=>-18526,
'fan'=>-18518,
'fang'=>-18501,
'fei'=>-18490,
'fen'=>-18478,
'feng'=>-18463,
'fo'=>-18448,
'fou'=>-18447,
'fu'=>-18446,
'ga'=>-18239,
'gai'=>-18237,
'gan'=>-18231,
'gang'=>-18220,
'gao'=>-18211,
'ge'=>-18201,
'gei'=>-18184,
'gen'=>-18183,
'geng'=>-18181,
'gong'=>-18012,
'gou'=>-17997,
'gu'=>-17988,
'gua'=>-17970,
'guai'=>-17964,
'guan'=>-17961,
'guang'=>-17950,
'gui'=>-17947,
'gun'=>-17931,
'guo'=>-17928,
'ha'=>-17922,
'hai'=>-17759,
'han'=>-17752,
'hang'=>-17733,
'hao'=>-17730,
'he'=>-17721,
'hei'=>-17703,
'hen'=>-17701,
'heng'=>-17697,
'hong'=>-17692,
'hou'=>-17683,
'hu'=>-17676,
'hua'=>-17496,
'huai'=>-17487,
'huan'=>-17482,
'huang'=>-17468,
'hui'=>-17454,
'hun'=>-17433,
'huo'=>-17427,
'ji'=>-17417,
'jia'=>-17202,
'jian'=>-17185,
'jiang'=>-16983,
'jiao'=>-16970,
'jie'=>-16942,
'jin'=>-16915,
'jing'=>-16733,