如果变量的语句不存在？

Question

I'm very new to PHP and this is throwing me for a loop.

So I understand some basic PHP IF statements, such as "if contains" "more than" but when it comes to my example; I'm a little confused.

The code below is for the SEO Title Tag. Currently it just echo's the following example:

The Hobbit Poster #1 - Movie Posters

How would I go about creating an IF Statment where if movie_name and poster_name doesn't exist then it just echo's "Movie Posters"

<title><?php echo $movie['movie_name']; ?> <?php echo $poster['poster_name']; ?> - Movie Posters</title>

Answer 1

Think of it another way:

IF (you have a movie_name OR a poster_name) show the DASH

<title><?php 
    $separator='';
    if (isset($movie['movie_name'])) { echo $movie['movie_name'].' '; $separator='- '; }
    if (isset($poster['poster_name'])) { echo $poster['poster_name'].' '; $separator='- '; }
    echo $separator;
?>Movie Posters</title>