Add initial support for PHP7 (#97)

* Add initial support for PHP7

* Update PHP env with now an PSR3 logger (Monolog). Now you can also create a handler function with PSR7 Http message and PSR3 logger in parameter.

* Add examples for PHP7 environement

* For development you can create a function in this path /app/userfuncdev.php it will be loaded

* Switch to alpine base image

* handler now receive an array with request, response and logger object

.gitignore

@@ -1,4 +1,5 @@
 *~
 
 # Pycharm IDE
-.idea
+.idea
+environments/php7/vendor/

environments/php7/Dockerfile

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+FROM php:7.1-alpine
+
+ENV PATH="/root/.composer/vendor/bin:${PATH}" \
+    COMPOSER_ALLOW_SUPERUSER=1
+
+RUN echo '#!/bin/sh' > /usr/local/bin/apk-install \
+    && echo 'apk add --update "$@" && rm -rf /var/cache/apk/*' >> /usr/local/bin/apk-install \
+    && chmod +x /usr/local/bin/apk-install
+
+RUN echo 'http://dl-4.alpinelinux.org/alpine/edge/testing' >> /etc/apk/repositories \
+    && apk update \
+    && apk-install \
+    git \
+    curl \
+    curl-dev \
+    libcurl \
+    zlib-dev \
+    freetype-dev \
+    jpeg-dev \
+    libjpeg-turbo-dev \
+    postgresql-dev \
+    libmcrypt-dev \
+    libpng-dev \
+    icu-dev \
+    gettext-dev \
+    vim \
+    libxml2-dev \
+    freetype-dev \
+    unzip \
+    libc6-compat \
+    openssl \
+    gcc \
+    autoconf
+
+RUN docker-php-ext-configure gd --with-freetype-dir=/usr/include/ --with-jpeg-dir=/usr/include/
+
+# Install useful extensions
+RUN docker-php-ext-install \
+    opcache \
+    bcmath \
+    ctype \
+    curl \
+    dom \
+    iconv \
+    fileinfo \
+    gd \
+    gettext \
+    intl \
+    json \
+    mcrypt \
+    mysqli \
+    pgsql \
+    pcntl \
+    pdo \
+    ftp \
+    pdo_mysql \
+    pdo_pgsql \
+    phar \
+    simplexml \
+    xmlrpc \
+    zip
+
+RUN curl -sS https://getcomposer.org/installer | php -- --install-dir=/usr/local/bin --filename=composer
+
+COPY . /app
+WORKDIR /app
+
+RUN composer install
+
+EXPOSE 8888
+
+ENTRYPOINT ["php"]
+CMD ["-S","0.0.0.0:8888","index.php"]

environments/php7/README.md

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+# Fission: PHP Environment
+
+This is the PHP environment for Fission.
+
+It's a Docker image containing a PHP 7.1 runtime. This image use php:7.1-cli base image with the built-in PHP server
+
+This environment didn't force you to use class or create a main function.
+
+A few common extensions are included :
+- curl
+- gd
+- json
+- mcrypt
+- PDO (pdo_mysql, pdo_pgsql, pdo_sqlite)
+- OPcache
+- ftp
+- iconv
+- phar
+- mysqli
+- pgsql
+- SimpleXML
+- xmlrpc
+- zip
+
+## Customizing this image
+
+To add other extensions or packages(composer.json) you need to edit the Dockerfile and rebuild this image (instructions below).
+
+## Rebuilding and pushing the image
+
+You'll need access to a Docker registry to push the image: you can
+sign up for Docker hub at hub.docker.com, or use registries from
+gcr.io, quay.io, etc.  Let's assume you're using a docker hub account
+called USER.  Build and push the image to the the registry:
+
+```
+   docker build -t USER/php7-env . && docker push USER/php7-env
+```
+
+## Using the image in fission
+
+You can add this customized image to fission with "fission env
+create":
+
+```
+   fission env create --name php7 --image USER/php7-env
+```
+
+Or, if you already have an environment, you can update its image:
+
+```
+   fission env update --name php7 --image USER/php7-env
+```
+
+After this, fission functions that have the env parmeter set to the
+same environment name as this command will use this environment.

environments/php7/composer.json

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+{
+    "autoload": {
+        "psr-4": {
+            "PHPEnv\\": "src/"
+        }
+    },
+    "require": {
+        "zendframework/zend-diactoros": "^1.3",
+        "monolog/monolog": "^1.22"
+    }
+}