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A regular expression can easily check whether a user entered something that looks like a valid phone number. In this case, backreferences to the captured values are used in the replacement text so we can easily reformat the phone number as needed.By using capturing groups to remember each set of digits, the same regular expression can be used to replace the subject text with precisely the format you want. Two other types of tokens used in this regular expression are character classes and [email protected] — Then that's what you need to address.If they don't properly escape when inserting into SQL, any name with an apostrophe (which your original question already recognizes as necessary) opens you up to security vulnerabilities.On the contrary, the 555 prefix is reserved for fake-out phone numbers. :\(\s*([2-9]1[02-9]|[2-9][02-8]1|[2-9][02-8][02-9])\s*\)|([2-9]1[02-9]|[2-9][02-8]1|[2-9][02-8][02-9]))\s*(? -Adam My gut feeling is reinforced by the amount of replies to this topic - that there is a virtually infinite number of solutions to this problem, none of which are going to be elegant.
NET), get your very own copy of , so that your phone number records are consistent. The parentheses that appear without backslashes are capturing groups and are used to remember the values matched within them so that the matched text can be recalled later.For example, the Text Boxes may be intended to take only numeric data and not Text strings. Private Sub Text Box1_Change() Only Numbers End Sub Private Sub Text Box2_Change() Only Numbers End Sub Private Sub Text Box3_Change() Only Numbers End Sub Private Sub Only Numbers() If Type Name(Me. Send payment proof to [email protected] 31 days after purchase date., composing a fairly comprehensive guide to validating and formatting North American and international phone numbers using regular expressions. Thus, the sequences that enclose the first group of digits match literal parenthesis characters.The regexes in these recipes are all pretty straightforward, but hopefully this gives an example of the depth you can expect from the book. Both are followed by a question mark, which makes them optional.