Element
|
Meaning
|
Example
|
Explanation of example
|
^
|
Match at beginning of string
|
^123
|
Match the digits 123 at the beginning of the
string
|
()
|
Captures the matched sub expression
|
(456)
|
Capture what is between the parentheses into a
numbered variable, starting at 1 which can be accessed as $n, eg $1
|
*
|
Specifies zero or more matches
|
\d(*)
|
|
+
|
Specifies one or more matches
|
\d(+)
|
|
?
|
Specifies zero or one matches
|
\d(?)
|
|
{n}
|
Specifies exactly n matches
|
\d{4}
|
Match 4 digits
|
{n,}
|
Specifies at least n matches
|
\d{3,}
|
Match at least 3 digits (with no limit to number
of digits matched
|
{n,m}
|
Specifies at least n, but no more than m,
matches.
|
\d{3,6}
|
Match at least 3 digits but no more than 6 digits
|
\d
|
Matches any decimal digit
|
^\d
|
Match any decimal digit (at the beginning of a
string)
|
|
|
Matches any one of the terms separated by the |
(vertical bar) character
|
134 | 135
|
Match either the string 134 or the string 135
|
$
|
The match must occur at the end of the string
|
^(123)$
|
Match exactly digits 123 (and not 1234)
|
The Lync number normalisation is based on .NET regular expression, more details can be found on the MSDN site: http://msdn.microsoft.com/en-us/library/hs600312
