Unable to install Composer - php-fpm

Question

Finally got Ubuntu 12.10 with nginx and php-fpm up and running. Now I want to run a websocket server with Ratchet, but I need to install Composer first. So I do this:

 curl -s https://getcomposer.org/installer | php

Just as the Composer site instructed, but I received the following error:

The program 'php' is currently not installed.

I thought it might have something to do with the php at the end there so I changed it to php5-fpm and then it told me:

[18-Nov-2012 05:01:30] ERROR: An another FPM instance seems to already listen on /var/run/php5-fpm.sock
[18-Nov-2012 05:01:30] ERROR: FPM initialization failed

Has anyone else encountered this? Any solutions? Thanks.

Solution 1

composer needs at least php 5.3.2. what's your php version? You need php command line to make it work. As the error msg suggested, you'd better install 'php'. In ubuntu, you can use

  sudo apt-get install php5-cli

Solution 2

use

usr/bin/php or /usr/bin/php instead of php

if you are not sure where your php is located, do a check via

whereis php

Solution 3

Do you have php5-cli installed?

dpkg -l | grep php5-cli

If not, type

sudo apt-get install php5-cli