Php 为复杂格式解析字符串的好方法
我试图从一个大字符串中解析科学碗问题。 一般格式如下：Php 为复杂格式解析字符串的好方法,php,regex,parsing,string-parsing,Php,Regex,Parsing,String Parsing,我试图从一个大字符串中解析科学碗问题。 一般格式如下： PART SUBJECT QuestionType Question goes here. ANSWER: Answer goes here. 例如，字符串可能如下所示： A Team Questions 5/7/2014 TOSS-UP 1) PHYSICS Multiple Choice Gravity is 10 m/s^2. How far in meters will an object fired at 10 meters
PART
SUBJECT QuestionType Question goes here.
ANSWER: Answer goes here.
A Team Questions 5/7/2014
TOSS-UP
1) PHYSICS Multiple Choice Gravity is 10 m/s^2. How far in meters will an object fired at 10 meters per second travel if it is fired at an angle of 22.5 degrees from the horizontal?
W) 5sqrt(2)
X) 10
Y) 10sqrt(2)
Z) 20
ANSWER: W) 5sqrt(2)
BONUS
1) PHYS Short Answer A proton is which of the following:
1) Fermion
2) Hadron
3) Lepton
4) Boson
5) Baryon
ANSWER: 1, 2, 5
TOSS-UP
2) EARTHSCI Short Answer What is the greatest prime factor of 5^2014+5^2015+5^2016+5^2017?
ANSWER: 13
...more tossup/bonus pairs...
/(TOSS-UP|BONUS)\n\s*(?:([0-9]+)[\.\)])?\s*(BIO(?:LOGY)?|CHEM(?:ISTRY)?|PHYS(?:ICS|ICAL(?: SCIENCE)?)?|MATH(?:EMATICS)?|E(?:SS)?(?:ARTH)? ? ?(?:AND)? ?(?:SPACE)? ?(?:SCI(?:ENCE)?)?)\s*(Multiple Choice|Short Answer)\s*([^\n]+)(:?\s*W[\s\S]([^\n]+)\s*X[\s\S]([^\n]+)\s*Y[\s\S]([^\n]+)\s*Z[\s\S]([^\n]+))?\s*\nANSWER[\s\S]([^\n]+)/i