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Regular Expression Examples
Regular Expression Examples
The following examples show some regular expressions and describe what they
match:
Expression
[\?&]value=
[A-Z]:(\\[A-Z0-9_]+)+
[A-Za-z][A-Za-z0-9_]*
([A-Za-z][A-Za-z0-9_]*)(\.[A-Za-z][A-Za-
z0-9_]*)?
(\+|-)?[1-9][0-9]*
(\+|-)?[1-9][0-9]*(\.[0-9]*)?
(\+|-)?[1-9]\.[0-9]*E(\+|-)?[0-9]+
a{2,4}
(ba){3,}
Regular expressions in CFML
The following examples of CFML show some common uses of regular expression
functions:
Expression
REReplace (CGI.Query_String,
"CFID=[0-9]+[&]*", "")
REReplace("I Love Jellies",
"[[:lower:]]","x","ALL"
REReplaceNoCase("cabaret","[A-Z]",
"G","ALL")
REReplace (Report,
"\$[0-9,]*\.[0-9]*", "$***.**")",
"")
Description
A URL parameter value in a URL.
An uppercase DOS/Windows full
path that (a) is not the root of a drive,
and (b) has only letters, numbers,
and underscores in its text.
A ColdFusion variable with no
qualifier.
A ColdFusion variable with no more
than one qualifier; for example,
Form.VarName, but not
Form.Image.VarName.
An integer that does not begin with a
zero and has an optional sign.
A real number.
A real number in engineering
notation.
Two to four occurrences of "a": aa,
aaa, aaaa.
At least three "ba" pairs: bababa,
babababa, and so on..
Returns
The query string with parameter CFID and
its numeric value stripped out.
I Lxxx Jxxxxxx
GGGGGGG
The string value of the variable Report with
all positive numbers in the dollar format
changed to "$***.**".
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