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Home: Perl Programming Help: Regular Expressions: numbers only

user123 New User May 6, 2010, 12:00 PM Post #1 of 4 (2543 views) numbers only Can't Post Hello, I've a short question about numbers ... how can I check with regex if a inputed text contains ONLY numbers ??? (if there's any other thing except a number it should recognize this) hope someone can help :-)

rovf Veteran May 7, 2010, 1:06 AM Post #2 of 4 (2529 views) Re: [user123] numbers only [In reply to] Can't Post Do you mean "wheather it contains only digits" or "whether it is a syntactically valid number"?

user123 New User May 7, 2010, 2:29 AM Post #3 of 4 (2527 views) Re: [rovf] numbers only [In reply to] Can't Post "wheather it contains only digits" so only 0123456789 should be valid 23.5; abc123; 1a1; ... -> not valid only 13412 (e.g.) -> valid

rovf Veteran May 7, 2010, 3:52 AM Post #4 of 4 (2524 views) Re: [user123] numbers only [In reply to] Can't Post either ^\d*$ or ^\d+$ depending on what you want to do with the empty string.

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