Regular expression check for special character or number

I have such regular expression which checked for at least one special character in the string:

^(.*[^0-9a-zA-Z].*)$

But how could i change this one to check for at l开发者_如何转开发east one special character or at leas one number in the string?

.*[^a-zA-Z]+.*

would match anything followed by a special character followed by anything.

Notice that I just removed the 0-9 from the character class (characters included in the square brackets).

Also, I removed the ^ and $ markers -- those match the beginning and end of string respectively. You don't need it because you're making it redundant with the .* (match zero or more of any character) anyway.

In fact, if you're just checking if the string contains a special character, then the following is good enough:

[^a-zA-Z]

you can use the Expresso, it is a smart tool for generate RegExps Expresso