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is it possible to define a regex pattern which checks eg. for 3 terms independent to their position in the main string?
eg. my string is something like "click here to unsubscribe: http://www.url.com"
the pattern should also work with "http:// unsubscribe click"
thx
693
$ means "Match the end of the string" (the position after the last character in the string). Both are called anchors and ensure that the entire string is matched instead of just a substring.
Using regex \B-\B matches - between the word color - coded . Using \b-\b on the other hand matches the - in nine-digit and pass-key .
The meta character “^” matches the beginning of a particular string i.e. it matches the first character of the string. For example, The expression “^\d” matches the string/line starting with a digit. The expression “^[a-z]” matches the string/line starting with a lower case alphabet.
You can use positive lookaheads. For example,
(?=.*click)(?=.*unsubscribe).*http
is a regex that will look ahead from the current position (without moving ahead) for click, then for unsubscribe, then search normally for http.
78
It's possible, but results in very complicated regexs, e.g.:
/(click.*unsubscribe|unsubscribe.*click)/
Basically, you would need to have a different regex section for each order. Not ideal. Better to just use multiple regexes, one for each term.
45
Yes, using conditionals.
http://www.regular-expressions.info/conditional.html
37
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