Enable extensions declared in composer.json (#245)

* Add script to parse composer.json for extensions to enable and enable them

* Add tests for the detect php version and install extensions scripts

* Fix cs style

* Extra whitespace

* No reason to handle shared vs. debian packaged extensions separate for now

* Run all the extension tests using the extension enabler rather than declaring in the custom php.ini file

* fix installation of bcmath, raphf, pq

* Fail if an extension is not available or if the extension version requested is not '*'

* Fix cs

* Maintain a blacklist of unsupported extensions/php versions

* Fix variable name

* Fix output file for the extensions.ini file

* Update README for note on installing extensions

php-nginx/Dockerfile

@@ -101,8 +101,10 @@ RUN chgrp www-data composer.sh && chmod +x /entrypoint.sh /composer.sh \
 
 # A script for extracting PHP version from composer.json.
 COPY detect_php_version.php /tmp/detect_php_version.php
-RUN chgrp www-data /tmp/detect_php_version.php && cd /tmp \
-    && su www-data -c "php /usr/local/bin/composer require composer/semver"
+COPY install_extensions.php /tmp/install_extensions.php
+RUN chgrp www-data /tmp/detect_php_version.php && \
+    cd /tmp && \
+    su www-data -c "php /usr/local/bin/composer require composer/semver"
 
 # Copy the app and change the owner
 ONBUILD COPY . $APP_DIR

php-nginx/README.md

@@ -224,18 +224,27 @@ php.ini):
 
 - BCMath (bcmath)
 - Calendar (calendar)
+- Cassandra (cassandra, third-party)
+- Ev (ev)
+- Event (event)
 - Exif (exif)
 - FTP (ftp)
 - GD (gd; with PNG, JPEG and FreeType support)
 - gettext (gettext)
-- gRPC (shared)
+- gRPC (grpc)
 - intl (intl)
+- ImageMagick (imagick)
 - mbstring (mbstring)
-- memcached (shared, enabled by default, experimental support for PHP7)
-- mongodb (shared)
+- memcached (enabled by default, experimental support for PHP7)
+- mongodb (mongodb)
 - MySQL (mysql; it's removed with PHP7.0)
+- OAuth (oauth)
 - PCNTL (pcntl)
-- redis (shared)
+- Phalcon (phalcon, not available for PHP 7.1)
+- PostgreSQL (pq, also requires raphf)
+- RAPHF (raphf)
+- rdkafka (rdkafka)
+- redis (redis)
 - Shmop (shmop)
 - SOAP (soap)
 - SQLite3 (sqlite3)
@@ -252,6 +261,28 @@ These extensions are only available with PHP 7:
 
 - APCu-BC (shared, enabled by default)
 
+### Enabling extensions
+
+To enable extensions, you can either [use a custom php.ini file]
+(#add-something-to-phpini)  or declare the requirement in your
+`composer.json`.  To add the requirement to your `composer.json`,
+either run:
+
+```bash
+> composer require ext-<extension name>:*
+```
+
+or add `"ext-<extension name>": "*"` to your `composer.json` in the
+`require` section:
+
+```json
+{
+    "require": {
+        "ext-phalcon": "*"
+    }
+}
+```
+
 ## Add something to php.ini
 
 You can just have php.ini file in your project directory. This file is

php-nginx/build-scripts/install_php56.sh

@@ -40,6 +40,8 @@ apt-get install -y \
         --no-install-recommends
 
 # Enable some extensions for backward compatibility
+ln -s ${PHP56_DIR}/bin/php56-enmod ${PHP56_DIR}/bin/php-enmod
+ln -s ${PHP56_DIR}/bin/php56-dismod ${PHP56_DIR}/bin/php-dismod
 ${PHP56_DIR}/bin/php56-enmod apcu
 ${PHP56_DIR}/bin/php56-enmod json
 ${PHP56_DIR}/bin/php56-enmod mailparse

php-nginx/build-scripts/install_php70.sh

@@ -38,6 +38,8 @@ apt-get install -y \
         --no-install-recommends
 
 # Enable some extensions for backward compatibility
+ln -s ${PHP70_DIR}/bin/php70-enmod ${PHP70_DIR}/bin/php-enmod
+ln -s ${PHP70_DIR}/bin/php70-dismod ${PHP70_DIR}/bin/php-dismod
 ${PHP70_DIR}/bin/php70-enmod apcu-bc
 ${PHP70_DIR}/bin/php70-enmod mailparse
 ${PHP70_DIR}/bin/php70-enmod memcached

php-nginx/build-scripts/install_php71.sh

@@ -37,6 +37,8 @@ apt-get install -y \
         --no-install-recommends
 
 # Enable some extensions for backward compatibility
+ln -s ${PHP71_DIR}/bin/php71-enmod ${PHP71_DIR}/bin/php-enmod
+ln -s ${PHP71_DIR}/bin/php71-dismod  ${PHP71_DIR}/bin/php-dismod
 ${PHP71_DIR}/bin/php71-enmod apcu-bc
 ${PHP71_DIR}/bin/php71-enmod mailparse
 ${PHP71_DIR}/bin/php71-enmod memcached

php-nginx/composer.json

@@ -0,0 +1,8 @@
+{
+    "require": {
+        "composer/semver": "*"
+    },
+    "require-dev": {
+        "phpunit/phpunit": "4.8.*"
+    }
+}