My PHP function that reads names and attempts to fix the suffixes

I am reading a text file that has some name inconsistencies. For example I have names like:

MILLERS, WALTER M IV
DUPONTE, THOMAS B. II
HARDIWAY, GRANT U. SR.
GUIDRY, PAUL JOHN

As you can see I can split the name by first name and last name however the suffixes are placed incorrectly. Ideally the names should be:

WALTER M MILLERS IV
THOMAS B. DUPONTE II
GRANT U. HARDIWAY SR.
PAUL JHN GUIDRY

That being said this is what I have but I feel Im over complicating something simple. Any tips? Also my logic does not account for the suffix of V since that could be a middle initial also.

private function extractFullName($name){

        $suffix = collect(['II', 'III', 'IV', 'JR.', 'SR.']);

        // lets first assemble a full name from the row
        $fullNameArray = explode(",", $name);
        $firstName=trim($fullNameArray[1]);
        $lastName=trim($fullNameArray[0]);

        //lets look at the FIRST NAME for II/III/IV/JR./SR.
        $suffix->each(function ($item, $key) use ($firstName, $lastName) {

            if (strpos($firstName, " ".$item)){
                $firstName = preg_replace('/ '.$item.'$/', '', $firstName);
                $lastName.=' '.$item;
                return false;
            }
        });

        //Basically arranging it in a 'firstname lastname II/III/IV/JR./SR.' format
        $name = $firstName." ".$lastName;
        $name = ucwords(strtolower($name));
        return $name;
    }

You could simplify you code quite a bit by utilising collections more:

private function extractFullName($name)
{
    $suffix = collect(['II', 'III', 'IV', 'JR.', 'SR.'])->first(function ($suffix) use ($name) {
        return ends_with($name, $suffix);
    });

    $name = $suffix ? rtrim($name, $suffix) : $name;

    return collect(explode(',', $name))->map(function ($name) {
        return trim(ucwords(strtolower($name)));
    })->reverse()->implode(' ') . ' ' . $suffix;
}

StackExchange Code Review Q#159921, answer score: 3