Needing for regular expression help

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Greetings friends,

I need some help on regular expressions, Im pretty new on this.
Here are the rules it must have:

- Admits symbols +#$&% ñ Ñ and space and it may be at the beginning, end or middle of the field (any part)
- If there is any symbol or space, it must have a letter or number on any part of the expression (it cant be only symbols)
- Is a required field.

I was thinking on something like this:

[A-Za-z0-9Ññ]+

But I dont know hoy to add the symbol part.
Thanks a lot for your help!

Posted 23-May-13 2:47am

Member 7869883

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Sergey Alexandrovich Kryukov 23-May-13 9:10am

It depends on what do you mean by "symbol", exactly. You need to formulate all very accurately and formally...
—SA

Member 7869883 23-May-13 9:20am

It allows A-Z a-a 0-9 ñ Ñ +#$&% and spaces
But if the user enters +#$&% or an space (at any location of the field), it must have at least one letter or number.
Thanks :)

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OriginalGriff · Accepted Answer · 2013-05-23T03:48:00

This is not a "good" regex problem: what you really want to do is use a regex to find if a string contains any "special" characters, then count the number of non-special characters. But your description basically comes down to: you can use any characters you like, but you must have at least one non-special character (because you can have specials anywhere, but you need at least one non-special, but you don't have to have any specials.) So use the regex you have - or better, use this:

\w+

which is about the same, but includes more accented characters.