ale chcialbym zeby wykonywal tez odpowiednie funkcje np.
||strtoupper(R2)|| niech w to miejsce wstawi odpowiednia zmienna przetworzana przez funkcje 'strtoupper'

Polecam gotowy skrypt wzorcow: smarty.php.net

preg_replace z modyfikatorem /e.

jesli chcesz zrobic sam to wystarczy tyle wiedziec

I must've read 50 regular expression tutorials and understood nothing from each. I finally worked them out through playing around and looking at other people's examples. I wrote this to summarise and clarify things. I find it helps as a quick lookup reference:

^ Start of String
$ End of string

n* Zero or more of 'n'
n+ One or more of 'n'
n? A possible 'n'

n{2} Exactly two of 'n'
n{2,} At least 2 or more of 'n'
n{2,4} From 2 to 4 of 'n'

() Parenthesis to group expressions
(n|a) Either 'n' or 'a'

. Any single character

[1-6] A number between 1 and 6
[c-h] A lower case character between c and h
[D-M] An upper case character between D and M
[^a-z] Absence of lower case a to z
[_a-zA-Z] An underscore or any letter of the alphabet

^.{2}[a-z]{1,2}_?[0-9]*([1-6]|[a-f])[^1-9]{2}a+$

A string beginning with any two characters
Followed by either 1 or 2 lower case alphabet letters
Followed by an optional underscore
Followed by zero or more digits
Followed by either a number between 1 and 6 or a character between a and f (Lowercase)
Followed by a two characters which are not digits between 1 and 9
Followed by one or more n characters at the end of a string
 
 
jolyon at mways dot co dot uk
03-Feb-2002 09:43  
 
The postcode example listed here isn't correct - it won't correctly detect Inner London postcodes (and others?) with an extra letter, eg:  

EC1M 3AA  

I've also ammended it so that the space is optional:  

if(eregi('^[A-Z]{1,2}[0-9]{1,2}[A-Z]? ?[0-9][A-Z]{2}$',$postcode)  
{  
print "You have a valid postcode!";  
}

nie bede sie upieral zeby to robic samemu :P

jak ktos wie to niech napisze, albo poda jakis wyczerpujacy (z wieloma przykladami) artykul o wyrazeniach regulanych