title: PHP using Declare ? What is a tick?
body: <p>I am a little bit confused by the PHP function <code>declare</code>. </p>
  
  <p>What exactly is a single tick? I thought a tick equals one line of code?</p>
  
  <p>But if I use:</p>
  
  <pre><code>function myfunc() {
          print "Tick";   
  }
  
  register_tick_function("myfunc");
  
  declare(ticks=1) {
     echo 'foo!bar';
  }
  </code></pre>
  
  <p>The script prints:</p>
  
  <p>"Tick" 2 Times??</p>