title: How can I create a function dynamically?
body: <p>I have a variable like <code>$string = "blah";</code></p>
  
  <p>How can I create a function that has the variable value as name?
  Is this possible in PHP?</p>
  
  <p>Like <code>function $string($args){ ... }</code> or something, and be able to call it like:</p>
  
  <pre><code>blah($args);
  </code></pre>