title: Merge 2 arrays in CakePHP
body: <p>I have two arrays array1 and array2. I want to merge these two arrays into one and show the values of merged array in a dropdown. I want the values in a way that the value of first array - value of 2nd array.</p>
  
  <p>e.g: </p>
  
  <pre><code>$employeePlaces1 = array(1, 2, 4,9);
  $employeePlaces2 = array(3, 5, 6,7);
  </code></pre>
  
  <p>I want in dropdown the value as <code>$employeePlaces1[0]-$employeePlaces2[1]</code>,
  <code>$employeePlaces1[0]-$employeePlaces2[1]</code>.</p>
  
  <pre><code>    1-3,
      2-5,
      4-6, 
      9-7.
  </code></pre>
  
  <p>How can I do this ?</p>