Alphabetic equivalent of PHP is_numeric

Question

I am looking for a function that would be the alphabetic equivalent of is_numeric. It would return true if there are only letters in the string and false otherwise. Does a bui

Answer 1

I would have used preg_match. But that's because I'd never heard of ctype_alpha().

if(!preg_match("/[^a-zA-Z]/", $teststring)) {
    echo "There are only letters in this string";
} else {
    echo "There are non-letters in this string";
}