Remove formatting from US phone number and their extension number - regex

Question

HI need help get phone number and there extension using either replace or regex
phone
[phone] --> 1234556789
[phone] ext81245 --> 1235772145
extension
[phone] -->
[phone] ext81245 --> 81245
"[phone]" -replace "[()\s\s-]+|Ext\S+", ""
"[phone] Ext 2445" -replace "[()\s\s-]+|Ext\S+", ""
This solves phone number but not extension.

Answer 1

You may try:
^\((\d{3})\)\s*(\d{3})-(\d{4})(?: ext(\d{5}))?$
Explanation of the above regex:
^, $ - Represents start and end of the line respectively.
\((\d{3})\) - Represents first capturing group matching the digits inside ().
\s* - Matches a white-space character zero or more times.
(\d{3})- - Represents second capturing group capturing exactly 3 digits followed by a -.
(\d{4}) - Represents third capturing group matching the digits exactly 4 times.
(?: ext(\d{5}))? -
(?: Represents a non capturing group
ext - Followed by a space and literal ext.
(\d{5}) - Represents digits exactly 5 times.
) - Closing of the non-captured group.
? - Represents the quantifier making the whole non-captured group optional.
You can find the sample demo of the above regex in here.
Powershell Commands:
PS C:\Path\To\MyDesktop> $input_path='C:\Path\To\MyDesktop\InputFile.txt'
PS C:\Path\To\MyDesktop> $output_path='C:\Path\To\MyDesktop\outFile.txt'
PS C:\Path\To\MyDesktop> $regex='^\((\d{3})\)\s*(\d{3})-(\d{4})(?: ext(\d{5}))?$'
PS C:\Path\To\MyDesktop> select-string -Path $input_path -Pattern $regex -AllMatches | % { "Phone Number: $($_.matches.groups[1])$($_.matches.groups[2])$($_.matches.groups[3]) Extension: $($_.matches.groups[4])" } > $output_path
Sample Result:

Answer 2

After you've replaced all characters, you could split the result to get two numbers
Applied to your example
#(
'[phone]'
, '[phone] ext81245'
) | % {
$elements = $_ -replace '[()\s\s-]+' -split 'ext'
[PSCustomObject]#{
phone = $elements[0]
extension = $elements[1]
}
}
returns
phone extension
------ ---------
1234556789
1235772145 81245

Answer 3

Try out this pattern. It will match phone numbers with and without parentheses, spaces and hyphens.
((?:\(?)(\d{3})(?:\)?\s?)(\d{3})(?:-?)(\d{4}))

Answer 4

So alternatively, you could use two replace functions in a single go. Say your original data sits in File1.txt and you want to output to File2.txt then you could use:
$content = Get-Content -Path 'C:\File1.txt'
$newContent = $content -replace '[^\d\n]', '' -replace '^(.{10})(.*)', 'Phone: $1 Extention: $2'
$newContent | Set-Content -Path 'C:\File2.txt'