title: Could not open input file [COMPOSER]
body: <p>when i'm running this command : php composer.phar require sonata-project/user-bundle --no-update</p>
  
  <p>i'm having this error: Could not open input file.</p>
  
  <p>i did some research on google and i can see that <strong><em>a lot of peopple had the same problem like mine</em></strong>! but i don't find the way to solve it.</p>
  
  <p>This is my path : <code>%SystemRoot%\System32\Wbem;C:\ProgramData\Oracle\Java\javapath;C:\xampp\php;C:\ProgramData\ComposerSetup\bin;C:\Windows\System32;C:\Program Files\nodejs\;C:\Program Files\Skype\Phone\;C:\ProgramData\ComposerSetup\bin\composer.phar</code></p>
  
  <p>i followed the instruction on those website but it doesn't help me :</p>
  
  <p><a href="http://www.naeemrana.com/technology/how-to-install-composer-dependency-manager-for-php-in-windows/" rel="nofollow noreferrer">http://www.naeemrana.com/technology/how-to-install-composer-dependency-manager-for-php-in-windows/</a></p>
  
  <p><a href="https://stackoverflow.com/questions/20769980/could-not-input-open-file-composer-phar">Could not open input file: composer.phar</a></p>