title: Cannot add PPA: 'ppa:ondrej/php5-5.6'
body: <p>I'm trying to update my php 5.5.9 to 5.6 in an Ubuntu machine.</p>
  
  <p>But when I run:</p>
  
  <pre><code>sudo add-apt-repository ppa:ondrej/php5-5.6
  </code></pre>
  
  <p>I'm getting:</p>
  
  <pre><code>Cannot add PPA: 'ppa:ondrej/php5-5.6'.
  Please check that the PPA name or format is correct.
  </code></pre>
  
  <p>How can I fix this?</p>
  
  <h2>EDIT</h2>
  
  <p>I ran:</p>
  
  <pre><code>sudo add-apt-repository ppa:ondrej/php
  sudo apt-get update
  sudo apt-get install php5
  </code></pre>
  
  <p>But when I run:</p>
  
  <pre><code>php5 -v
  </code></pre>
  
  <p>I still get php 5.5.9:</p>
  
  <pre><code>PHP 5.5.9-1ubuntu4.20 (cli) (built: Oct  3 2016 13:00:37) 
  </code></pre>