ereg city, state zip

[fnbcprog]

How do I ereg to check and see if a string matches this format:

city, state zip
ie: Beverly Hills, CA 90210

The zip code can be 5 digits or 9 digits?

Anybody know?

[malijun]

if(!eregi('^[a-zA-Z ]+,[A-Z]{2}[[:blank:]][0-9]{5}$',"Beverly Hills,CA 90210")){
echo "wrong";
}
else{
echo "correct";
}
i can't realize 5 digits or 9 digits,sorry!

[malijun]

or use:
if(!eregi('(^[a-zA-Z ]+,[A-Z]{2}[[:blank:]][0-9]{5}$)|(^[a-zA-Z ]+,[A-Z]{2}[[:blank:]][0-9]{9}$)',"Beverly Hills,CA 902101234")){
echo "wrong";
}
else{
echo "correct";
}
i found it works