基本正则表达式含义？

Question

我有这个正则表达式:

'/^ANSWER\:(.+?)$/'

我知道这大致翻译为:

以"ANSWER:"开头的字符串......

我不确定是什么

(.+?)$

翻译成？任何帮助将不胜感激!

Answer 1

(       # begin capturing group
  .+?     # match any character (.) one or more times (+) as few times as possible (?)
)       # end capturing group
$       # end of string anchor (or end of line anchor, if multiline option is enabled)

以下链接有一个很好的正则表达式语法摘要:http:
//www.regular-expressions.info/reference.html