php计算四柱(生辰八字)，四柱即出生人的出生年、月、日、时分别称之为年柱、月柱、日柱和时柱；以天干地支纪年法表示出来每柱两个字，共八个字也称生辰八字，用以推算个人运程。(PHP calculates four pillars (eight characters of birth). Four pillars, namely the birth year, month, day and time of the person born, are called year pillars, month