title: Get the minimum and maximum values in an array column
body: <p>I have an array in this format:</p>
  <pre><code>$array = [
      ['id' =&gt; 117, 'name' =&gt; 'Networking', 'count' =&gt; 16],
      ['id' =&gt; 188, 'name' =&gt; 'FTP', 'count' =&gt; 23],
      ['id' =&gt; 189, 'name' =&gt; 'Internet', 'count' =&gt; 48],
  ];
  </code></pre>
  <p>Is there a good way to retrieve the minimum and maximum values of the 'count' column (<code>16</code> and <code>48</code> respectively)?</p>
  <p>I could do this using a few loops, but I wonder if there may be a better way.</p>