title: Why is string concatenation necessary?
body: <pre><code>$lions = "lions";
  $tigers = "tigers";
  $bears = "bears";
  
  echo "$lions and $tigers and $bears, oh my!"
  </code></pre>
  
  <p>Echos the same thing as this:</p>
  
  <pre><code>echo $lions .  " and " . $tigers . " and " . $bears . ", oh my!"
  </code></pre>
  
  <p>So why is concantenation necessary? What is the point?</p>