PHP composer installation is giving error "??+?" -

i'm getting following output when trying install php composer. ideas what's wrong?

[user temp]$ curl -s https://getcomposer.org/installer | php -d detect_unicode=off -d suhosin.executor.include.whitelist=phar settings on machine may cause stability issues composer. if encounter issues, try change following:  php compiled --with-curlwrappers cause issues http authentication , github. recompile without flag if possible  downloading...  composer installed to: /home/user/temp/composer.phar use it: php composer.phar  [user temp]$ php composer.phar install ??+?[user temp]$  

fixed problem, permissions problem! doesn't work within jailshell.