问识别文本串中人名和姓氏的最佳方法

EN

$name = $this->search($line);
if (count($name) > 0 && empty($fname) && empty($lname)){
    $fname = $name[0];
    $lname = $name[1];
}

function search($str){ //$str is the current file line being read
        require "utils".DIRECTORY_SEPARATOR."dictionary-first-names.php";
        $arr = explode(" ", $str);

        for ($i = 0; $i < count($arr); $i++){
            if (in_array(mb_strtolower($arr[$i]), $dict)){
                return array($arr[$i], $arr[$i+1]); //shouldn't have array out of bounds as first & last name should be on the same line
            }
        }
    }