Symfony install missing vendors libraries - php

Question

I have a fresh install of Symfony with everthing looking in-place apart from my vendors directory is empty? That is, it has
composer and doctrine directories in it but they are empty. If I stand in my root and run the command:
$ composer install
Loading composer repositories with package information
Installing dependencies (including require-dev) from lock file
- Installing doctrine/lexer (v1.0.1)
Downloading: 100%
Failed to download doctrine/lexer from dist: Could not decompress the archive, enable the PHP zip extension.
The php.ini used by your command-line PHP is: /etc/php5/php.ini
Now trying to download from source
- Installing doctrine/lexer (v1.0.1)
Cloning 83893c552fd2045dd78aef794c31e694c37c0b8c
[RuntimeException]
Failed to clone git#github.com:doctrine/lexer.git via git, https, ssh protocols, aborting.
- git://github.com/doctrine/lexer.git
Cloning into '/cygdrive/c/Apache24/htdocs/symfony.local/vendor/doctrine/lexer'...
fatal: remote composer already exists.
- https://github.com/doctrine/lexer.git
fatal: destination path '/cygdrive/c/Apache24/htdocs/symfony.local/vendor/doctrine/lexer' already exists and is not an empty directory.
- git#github.com:doctrine/lexer.git
fatal: destination path '/cygdrive/c/Apache24/htdocs/symfony.local/vendor/doctrine/lexer' already exists and is not an empty directory.
At the front end browsing to http://symfony.local/web/
Warning: require(C:\Apache24\htdocs\symfony.local\app/../vendor/autoload.php): failed to open stream: No such file or directory in C:\Apache24\htdocs\symfony.local\app\autoload.php on line 11
Fatal error: require(): Failed opening required 'C:\Apache24\htdocs\symfony.local\app/../vendor/autoload.php' (include_path='.;c:\php\includes') in C:\Apache24\htdocs\symfony.local\app\autoload.php on line 11
Clearly it's looking for /vendor/autoload.php but this isn't there. Why is my vendor directory empty and how can I ensure the libraries get installed?
$ composer update returns:
Loading composer repositories with package information
Updating dependencies (including require-dev)
- Installing paragonie/random_compat (1.1.4)
Downloading: 100%
Failed to download paragonie/random_compat from dist: Could not decompress the archive, enable the PHP zip extension.
The php.ini used by your command-line PHP is: /etc/php5/php.ini
Now trying to download from source
- Installing paragonie/random_compat (1.1.4)
Cloning d762ee5b099a29044603cd4649851e81aa66cb47
[RuntimeException]
Failed to clone git#github.com:paragonie/random_compat.git via git, https, ssh protocols, aborting.
- git://github.com/paragonie/random_compat.git
Cloning into '/cygdrive/c/Apache24/htdocs/symfony.local/vendor/paragonie/random_compat'...
fatal: remote composer already exists.
- https://github.com/paragonie/random_compat.git
fatal: destination path '/cygdrive/c/Apache24/htdocs/symfony.local/vendor/paragonie/random_compat' already exists and is not an empty directory.
- git#github.com:paragonie/random_compat.git
fatal: destination path '/cygdrive/c/Apache24/htdocs/symfony.local/vendor/paragonie/random_compat' already exists and is not an empty directory.

Answer 1

Well, your PHP is not properly configured.
Adjust your /etc/php5/php.ini and enable the "ZIP" extension.
And the rest is probably a permissions issue, because you are using Cygwin in combination with Composer. Composer and Cygwin are not really best friends.
My suggestion: run Composer on the native Windows CLI, just for the vendor fetching part.

Answer 2

What you want is composer update. It will read your composer.json to install all required packages. composer install is used for deployment.

Answer 3

Download and enable the zip extention for PHP
If you are using PHP7.0 and use a debian base distribution (Ex: Ubuntu), use the following to install and enable it automaticaly
apt-get install php-zip