Regular Expressions

[Anon]

Hi,

I'm trying to do two regular expressions in PHP, but I can't figure them out....

1. Testing that a string contains only alpha/numeric characters (both upper and lower case).

2. Testing that a string contains an '@' and a '.' somewhere, and in that order (very basic email validation).

Any help much appreciated!

Jon

[Anon]

I think you would have found answers to both of these by searching, however...

1. Testing that a string contains only
   alpha/numeric characters (both upper and
   lower case).

if (!eregi("[a-z0-9]",$string)) {
... error action ...
}

2. Testing that a string contains an '@'
   and a '.' somewhere, and in that order
   (very basic email validation).

Dunno why you're going for "very basic" validation - it's all or nothing, and if you want all, there's plenty of sample code both here and on other sites that will help you do it...

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