NYCPHP Meetup

[Cliff Hirsch]

It's so simple! Seriously, I've said it before -- Regex Buddy is awesome.

Here's the output:

email explanation

/^(\w+(?:\.\w+)*)@((?:\w+\.)*\w[\w-]{0,66})\.([a-z]{2,6}(?:\.[a-z
]{2})?)$/

Match the character "/" literally «/»
Assert position at the start of the string «^»
Match the regular expression below and capture its match into backreference
number 1 «(\w+(?:\.\w+)*)»
   Match a single character that is a "word character" (letters, digits,
etc.) «\w+»
      Between one and unlimited times, as many times as possible, giving
back as needed (greedy) «+»
   Match the regular expression below «(?:\.\w+)*»
      Between zero and unlimited times, as many times as possible, giving
back as needed (greedy) «*»
      Match the character "." literally «\.»
      Match a single character that is a "word character" (letters, digits,
etc.) «\w+»
         Between one and unlimited times, as many times as possible, giving
back as needed (greedy) «+»
Match the character "@" literally «@»
Match the regular expression below and capture its match into backreference
number 2 «((?:\w+\.)*\w[\w-]{0,66})»
   Match the regular expression below «(?:\w+\.)*»
      Between zero and unlimited times, as many times as possible, giving
back as needed (greedy) «*»
      Match a single character that is a "word character" (letters, digits,
etc.) «\w+»
         Between one and unlimited times, as many times as possible, giving
back as needed (greedy) «+»
      Match the character "." literally «\.»
   Match a single character that is a "word character" (letters, digits,
etc.) «\w»
   Match a single character present in the list below «[\w-]{0,66}»
      Between zero and 66 times, as many times as possible, giving back as
needed (greedy) «{0,66}»
      Match a single character that is a "word character" (letters, digits,
etc.) «\w»
      The character "-" «-»
Match the character "." literally «\.»
Match the regular expression below and capture its match into backreference
number 3 «([a-z]{2,6}(?:\.[a-z
]{2})?)»
   Match a single character in the range between "a" and "z" «[a-z]{2,6}»
      Between 2 and 6 times, as many times as possible, giving back as
needed (greedy) «{2,6}»
   Match the regular expression below «(?:\.[a-z
]{2})?»
      Between zero and one times, as many times as possible, giving back as
needed (greedy) «?»
      Match the character "." literally «\.»
      Match a single character present in the list below «[a-z
]{2}»
         Exactly 2 times «{2}»
         A character in the range between "a" and "z" «a-z»
         One of the characters "
" «
»
Assert position at the end of the string (or before the line break at the
end of the string, if any) «$»
Match the character "/" literally «/»


Created with RegexBuddy



On 3/1/07 11:11 AM, "Timothy Boyden" <tboyden at supercoups.com> wrote:

> Any RegExp gurus care to do an educational breakdown of the RegEx filter
> in that function?
> 
> I just can't get my head around regular expressions, too much like
> algebra and Perl  ;-p
> 
> TIA,
> 
> Tim
> 
> 
> -----Original Message-----
> From: talk-bounces at lists.nyphp.org [mailto:talk-bounces at lists.nyphp.org]
> On Behalf Of Alvaro P.
> Sent: Thursday, March 01, 2007 10:57 AM
> To: NYPHP Talk
> Subject: Re: [nycphp-talk] RegExp Assistance
> 
> I use this function:
> 
> function validateEmail(email)
> {
>         var
> filter=/^(\w+(?:\.\w+)*)@((?:\w+\.)*\w[\w-]{0,66})\.([a-z]{2,6}(?:\.[a-z
> ]{2})?)$/i;
>         if(filter.test(email)==true) {
>                 return true;
>         } else{
>                 return false;
>         }
> 
> }
> 
>