Explaining the following regular expression:<\/p>\n
(\\d(3,4)[.-]?)+<\/p>\n
( starts a capturing group
\n\\ escapes the following character
\nd end character shorthand (match any digit in the range 0 through 9 with \\d)
\n{ open qualifier
\n3 minimum quantity to match
\n, separate quantities
\n4 maximum quantity to match
\n} close quantifier
\n[ open character class
\n. match literal dot
\n– literal hyphen to match hyphen
\n] close character class
\n? zero or one quantifier
\n) close character class
\n+ one or more quantifier<\/p>\n
Improved version:
\n(\\d{3}[.-]?){2}\\d{4}<\/p>\n","protected":false},"excerpt":{"rendered":"
Explaining the following regular expression: (\\d(3,4)[.-]?)+ ( starts a capturing group \\ escapes the following character d end character shorthand (match any digit in the range 0 through 9 with \\d) { open qualifier 3 minimum quantity to match , … Continue reading