title: quoting constants in php: "this is a MY_CONSTANT"
body: <p>I want to use a constant in PHP, but I also want to put it inside double quotes like a variable. Is this at all possible?</p>
  
  <pre><code>define("TESTER", "World!");
  echo "Hello, TESTER";
  </code></pre>
  
  <p>obviously outputs "Hello, TESTER", but what I really want is something like:</p>
  
  <pre><code>$tester = "World!";
  echo "Hello, $tester";
  </code></pre>
  
  <p>outputs "Hello, World!".</p>