If statment for if a variable doesn't exist?
<p>I'm very new to PHP and this is throwing me for a loop.</p>

<p>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.</p>

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

<p>The Hobbit Poster #1 - Movie Posters</p>

<p>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"</p>

<pre><code>&lt;title&gt;&lt;?php echo $movie['movie_name']; ?&gt; &lt;?php echo $poster['poster_name']; ?&gt; - Movie Posters&lt;/title&gt;
</code></pre>
