Regex Check if string contains at least one digit

Question

I have got a text string like this    test1test   I want to check if it contains at least one digit using a regex   What would this regex look like

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In perl   if  testString      d          print  This string contains at least one digit      where  d matches to a digit

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The regular expression you are looking for is simply this    0-9    You do not mention what language you are using  If your regular expression evaluator forces REs to be anchored  you need this      0-9      Some RE engines  modern ones   also allow you to write the first as  d  mnemonically  digit  and the second would then become    d

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In Java   public boolean containsNumber String string        return string matches      d

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If anybody falls here from google  this is how to check if string contains at least one digit in C    With Regex  if  Regex IsMatch myString     d           do something     Info  necessary to add using System Text RegularExpressions    With linq   if  myString Any c   gt  Char IsDigit c           do something     Info  necessary to add using System Linq

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I m surprised nobody has mentioned the simplest version    d   This will match any digit  If your regular expression engine is Unicode-aware  this means it will match anything that s defined as a digit in any language  not just the Arabic numerals 0-9   There s no need to put it in  square brackets  to define it as a character class  as one of the other answers did   d works fine by itself   Since it s not anchored with   or    it will match any subset of the string  so if the string contains at least one digit  this will match   And there s no need for the added complexity of    since the goal is just to determine whether there s at least one digit  If there s at least one digit  this will match  and it will do so with a minimum of overhead

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Ref this  SELECT   FROM product WHERE name REGEXP   0-9

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you could use look-ahead assertion for this          d

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This    d    should work  Edit  no clue why I added the      without it works just as fine    d

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Another possible solution  in case you re looking for all the words in a given string  which contain a number Pattern  w  d 1   w     w  - Matches 0 or more instances of  A-Za-z0-9    d 1   - Matches 1 or more instances of a number  w  - Matches 0 or more instances of  A-Za-z0-9    The whole point in  w  is to allow not having a character in the beginning or at the end of a word  This enables capturing the first and last words in the text  If the goal here is to only get the numbers without the words  you can omit both  w   Given the string Hello world 1 4m very happy to be here  my name is W1lly W0nk4  Matches 1 4m W1lly W0nk4  Check this example in regexr - https   regexr com 5ff7q

[regex] Regex: Check if string contains at least one digit

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