Rewrite Getting Started article: Silex to Slim framework (#70)

* move main app to Slim framework

no DI container yet, so no logging

* use a DI container

* Monolog via DI

* use php-di/slim-bridge

* use recommended Procfile syntax

no vendor/bin/ prefix, since CNB will use a different location

* move views out of public web dir

Author: dzuelke

Procfile

@@ -1 +1 @@
-web: vendor/bin/heroku-php-apache2 web/
+web: heroku-php-apache2 web/

README.md

@@ -1,6 +1,6 @@
 # php-getting-started
 
-A barebones PHP app that makes use of the [Silex](http://silex.sensiolabs.org/) web framework, which can easily be deployed to Heroku.
+A barebones PHP app that makes use of the [Slim](https://www.slimframework.com/) web framework, which can easily be deployed to Heroku.
 
 This application supports the [Getting Started with PHP on Heroku](https://devcenter.heroku.com/articles/getting-started-with-php) article - check it out.
 

app.json

@@ -1,6 +1,6 @@
 {
   "name": "Start on Heroku: PHP",
-  "description": "A barebones PHP app that makes use of the Silex web framework",
+  "description": "A barebones PHP app that makes use of the Slim web framework",
   "repository": "https://github.com/heroku/php-getting-started",
   "addons": []
 }

composer.json

@@ -1,9 +1,12 @@
 {
   "require" : {
-    "silex/silex": "^2.0.4",
-    "monolog/monolog": "^1.22",
-    "twig/twig": "^2.0",
-    "symfony/twig-bridge": "^3"
+    "php-di/php-di": "^7.0",
+    "slim/slim": "^4.0",
+    "php-di/slim-bridge": "^3.1.0",
+    "slim/psr7": "^1.3.0",
+    "monolog/monolog": "^3.0",
+    "twig/twig": "^3.0",
+    "slim/twig-view": "^3.0"
   },
   "require-dev": {
     "heroku/heroku-buildpack-php": "*"