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Robert_47833's avatar
Robert_47833
Icon for Altostratus rankAltostratus
Sep 14, 2011

match_regex

$uri match_regex "^/(sell)"   Hi,can someone know the meaning of "()" here? what is the function of ()     also match_regex "^/(sell|cjj|bpm|)",what does the "|" mean here  
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Michael_Yates's avatar
Michael_Yates
Icon for Nimbostratus rankNimbostratus
Sep 14, 2011
The "()" are used for logical grouping.

 

 

The "|" is for Alterations.

 

 

There is a nice Regular Expressions Cheat Sheet here:

 

http://opencompany.org/download/regex-cheatsheet.pdf

 

 

You can get a nice one for .NET here:

 

http://regexlib.com/CheatSheet.aspx