Nginx HTTP Server - Fourth Edition

Quantifiers

So far, you are able to express simple patterns with a limited number of characters. Quantifiers allow you to extend the amount of accepted entities:

Quantifier	Description
* 0 or more times	The entity preceding * must be found 0 or more times: Example pattern: he*llo Matching strings: hllo, hello, heeeello Non-matching strings: hallo, ello
+ 1 or more times	The entity preceding + must be found 1 or more times: Example pattern: he+llo Matching strings: hello, heeeello Non-matching strings: hllo, helo
? 0 or 1 time	The entity preceding ? must be found 0 or 1 times: Example pattern: he?llo Matching strings: hello, hllo Non-matching strings: heello, heeeello
{x} x times	The entity preceding ...