title: Intervention Image - Could not open input file: composer.phar
body: <p>When I install the <code>php composer.phar require intervention/image</code> this, </p>
  
  <p>I got the one error:</p>
  
  <blockquote>
    <p>Could not open input file: composer.phar</p>
  </blockquote>
  
  <p>I follow this step but I can't find the solution to my error: <a href="http://image.intervention.io/getting_started/installation" rel="nofollow noreferrer">Intervention Image</a> </p>