regular expression help

Question

I need to match the following pattern:

return character 5 character string, A-Z, 0-( space

For example:

ABC65 
CG876

Each with a return character before and a space after. What regular expression should I use for this? Using PHP

Answer 1

Assuming you meant 0-9 instead of 0-(:

^[A-Z0-9]{5} $

Answer 2

$yourstring = "ABC65 CG876";
echo preg_replace('/([A-Z0-9]{5}) /', '${1}<br />', $yourstring);

It seems I misunderstood (or misinterpreted) your question. So the correct answer in my opinion is:

^[A-Z0-9 ]{5}$

Answer 3

If you want the space everywhere :

/^[A-Z0-9 ]{5}/