title: How to install http_pecl on PHP 5.x?
body: <p>I am trying to install <code>pecl_http</code> on Ubuntu 14.04, however it reports to require PHP 7. </p>
  
  <pre><code>$ sudo pecl install pecl_http
  pecl/pecl_http requires PHP (version &gt;= 7.0.0), installed version is 5.5.9-1ubuntu4.14
  pecl/raphf requires PHP (version &gt;= 7.0.0), installed version is 5.5.9-1ubuntu4.14
  pecl/propro requires PHP (version &gt;= 7.0.0), installed version is 5.5.9-1ubuntu4.14
  No valid packages found
  install failed
  $
  </code></pre>
  
  <p>Similarly on Debian:</p>
  
  <pre><code>pecl/pecl_http requires PHP (version &gt;= 7.0.0), installed version is 5.6.17-0+deb8u1
  pecl/raphf requires PHP (version &gt;= 7.0.0), installed version is 5.6.17-0+deb8u1
  pecl/propro requires PHP (version &gt;= 7.0.0), installed version is 5.6.17-0+deb8u1
  </code></pre>
  
  <p>I can't find <a href="https://pecl.php.net/package-changelog.php?package=pecl_http">changelog</a> any information that <code>pecl_http</code> is not backward compatible with PHP 5.x.</p>
  
  <p>I tried with PHP 7.0 and it installed successfully, but is there anything I can do to install it with PHP 5.x?</p>