Extract integer from powershell string

Question

I need to extract a number from a string, the number changes all the time so cannot just be hard coded eg:

some random amount of text 54321 more text and another number 123

I know I can use something like:

'john123456smith' -replace "[^0-9]" , ''

but that gives me 54321123 which is not what I want, I only want the 54321.

Any idea on a regular expression that will do that?

stackoverflow.com/q/25885361/2634547 Your answer is in above thread... — rt.jar
– rt.jar, Commented Jun 18, 2018 at 16:29

user6811411 · Accepted Answer · 2018-06-18 16:33:57Z

1

If you know the number of places the number should have (here 5)

$String = "john123456smith"
If ($String -match '^\D*(\d{5}).*$') {
    "Foud number {0}" -f $Matches[1]
} else {
    "no number with 5 places found"
}

Sample output:

Foud number 12345

answered Jun 18, 2018 at 16:33

user6811411

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Comments

EBGreen · Accepted Answer · 2018-06-18 16:46:01Z

1

Well, based on your description, this should work:

$test = 'asdfasdfasdfadf54321asdfasdfasdf123'
$test -match '[^0-9]+([0-9]+)'
$matches[1]

edited Jun 18, 2018 at 16:46

answered Jun 18, 2018 at 16:31

EBGreen

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