Question

I’m trying to take two strings and print them out in alphabetical order. For example, I am taking their first and last name. If first name <= last name (ex. adam apple), then print out “First name = Adam Last name = Apple” else print out Last name = whatever the last name is, and first name = whatever the first name is. It’s coming from Post data, here is my code.

if (isset($_POST["name"])){
    $fullname=$_POST["name"];
    if (!empty($fullname)){
        $fullnameArray = explode(" ", $fullname);
        if ($fullnameArray[0] <= $fullnameArray[1]){
            echo "First name: " . $fullnameArray[0];
            echo "<br/>";
            echo "Last Name: " . $fullnameArray[1];
        }else{
            echo "Last name: " . $fullnameArray[1];
            echo "<br/>";
            echo "First Name: " . $fullnameArray[0];
        }
        echo "<br/>";
        }else{
            echo "Please enter your first and last name.";
            echo "<br/>";
        }
}

Thanks.

Answer 1

You want if (strcmp($fullnameArray[0], $fullnameArray[1]) < 0).

See the PHP.net description of strcmp. If you care about mixed case, you may want strcasecmp instead.