title: cannot install php5.6-zip on ubuntu 16.04
body: <p>currently I want to update my old <strong>php 5.6 application</strong> in <strong>ubuntu xenial 16.04.6</strong> with <strong>php5.6-zip</strong> extension.</p>
  <p><code>sudo apt-get install php5.6-zip</code></p>
  <blockquote>
  <p>E: Unable to locate package php5.6-zip<br> E: Couldn't find any package by glob 'php5.6-zip'<br> E: Couldn't find any package by regex 'php5.6-zip'</p>
  </blockquote>
  <p>tried to add the ppa repository <code>sudo add-apt-repository -y ppa:ondrej/php5-5.6</code></p>
  <blockquote>
  <p>The user named '~ondrej' has no PPA named 'ubuntu/php5-5.6'</p>
  </blockquote>
  <p>Then tried to run <code>sudo add-apt-repository -y ppa:ondrej/php</code> and
  <code>sudo apt-get install php5.6-zip</code></p>
  <p>still got the unable to locate package php5.6-zip error. Btw there is no php5.6-zip from <code>apt-cache policy php5.6</code> command. Does anyone have solution regarding this problem? your help would be much appreciated. Thank you</p>