title: Composer install Error in argument 1, char 2: option not found r
body: <p>I'm trying to install composer on my Website. <a href="https://getcomposer.org/download/" rel="noreferrer">The Composer documentations</a> suggests running this command:</p>
  
  <pre><code>php -r "copy('https://getcomposer.org/installer', 'composer-setup.php');"`
  </code></pre>
  
  <p>but when I do, I get an error: </p>
  
  <blockquote>
    <p>Error in argument 1, char 2: option not found r</p>
  </blockquote>
  
  <p>I use PHP Version 7.0</p>
  
  <p>What's going on here?</p>