Regular expression help

[graham]

Hi,

I've learned my PHP from the book 'PHP4 Bible'. It has only a VERY basic section of regular expressions. I need to know this:

I have a string

"Credit card number: <font color='#FF0000'>1234 5678 1234 4557</font></font>"

I need to replace the card number which consists of groups of digits separated by a space, with the string

" encrypted "

What is the correct way to do this using ereg_replace()? I know that I can use [0-9] for the digits, but I'm confused with the inclusing of a space character in the original string between the digits.

Thanks Graham

[Anon]

Much more easily done, if we know exactly what the string is, to do:

$string = "Credit card number: 1234 5678 1234 4557";

$newstring = substr($string, 0, 20)." encrypted ";

Hope that helps.

Chris King

[Anon]

try this:

$number = preg_replace("/([0-9])+ ([0-9])+ ([0-9])+ ([0-9])+/",$number);

for 4 groups of digits.
I think there's no way of limiting the number of digits in each group.

Good luck. 😉

Mauricio

[Anon]

Oops, wrong syntax. sorry. 🙂
this is correct:

$number = preg_replace("/([0-9])+ ([0-9])+ ([0-9])+ ([0-9])+/","Encrypted ", $number);

good hacking,
Mauricio