title: Joining Arrays in PHP
body: <p>This is really simple but I need a quick way to do this.</p>
  
  <p>I have three arrays like</p>
  
  <pre><code>$a = array('a','b','c');
  $p = array('p','q','r');
  $x = array('x','y','z');
  </code></pre>
  
  <p>How do I combine them to make</p>
  
  <pre><code>array (
      [0] =&gt; array ('a','p','x');
      [1] =&gt; array ('b','q','y');
      [2] =&gt; array ('c','r','z');
  );
  </code></pre>