title: Implode 1 index of an array with 2 indices
body: <p>I have an array $skills. I want to make a comma seperated list of all the <code>skills</code>. </p>
  
  <p>I thought I could do this with array implode, but it looks like I'll have to use a foreach() and append to a string. Is there a way to do this with just array implode?</p>
  
  <pre><code>[skills] =&gt; Array
          (
              [0] =&gt; Array
                  (
                      [email] =&gt; don.pinkus@gmail.com
                      [skill] =&gt; Statistics
                  )
  
              [1] =&gt; Array
                  (
                      [email] =&gt; don.pinkus@gmail.com
                      [skill] =&gt; Adobe Creative Suite
                  )
  
              [2] =&gt; Array
                  (
                      [email] =&gt; don.pinkus@gmail.com
                      [skill] =&gt; HTML + CSS
                  )
  
              [3] =&gt; Array
                  (
                      [email] =&gt; don.pinkus@gmail.com
                      [skill] =&gt; Web Analytics
                  )
  </code></pre>