[jonnekke]

Hi there..

I got a form where want to check if a zipcode is correct..

A zipcode should look like 0000AA or 0000 AA

I made this patern:

PHP Code:

$patroon3 = "[0-9]{4}+[A-Za-z]{2}"; 

and check ik like this:

PHP Code:

if(!eregi($patroon3, $postcode2))) 

But it's isn't working correct..

where did I go wrong?.

_j

[Nico]

PHP Code:

'~^\d{4}[ ]?[a-z]{2}$~i' 

And get used to preg_match() rather than the ereg* functions. They're way slower and they're gonna be disabled by default (or removed completely, not sure) in PHP 6.

[jonnekke]

thnx nico..

can you explain the expression a bit?.
this is one of the part I'm still kind of new to

[phpdoctor]

This is a good tutorial:
PHP Video Tutorials - Regular Expressions

Nico gave it to me some time ago hehe.

[Nico]

^ matches the beginning of the string.
\d matches a digit, {4} times.
[ ]? matches an optional space.
[a-z] matches characters from a-z, {2} times.
$ matches the end of the string.
i, makes the whole thing case-insensitive.

Take a look at that video too. It's pretty nice.

[jonnekke]

What stands a '~' for in a regular expression?.

'\s*' means a possible space right?.
and []? a possible space?.

Is there a site where to find a list of options to use i a regular expression?.

PHP Code:

$pattern2 = "~(<div\s*.?>)~"; // seems to me to search for a div opening en div closing tag
$pattern3 = "~(<span\s*.?>)~"; // seems to me to search for a span opening en span closing tag 

_j

[Nico]

The ~ are delimiters. I think (if I remember correctly) the guy in the video uses dollar signs as delimiters. You can use pretty much anything. If you haven't watched the video yet, I stronly encourage you to do so. It will answer most of your questions.

\s* means 0 (zero) spaces or any amount.
[ ]? is a possible space, yes.

Originally Posted by jonnekke

Is there a site where to find a list of options to use i a regular expression?.

Yes.