Inject GET and POST before PHP gets parsed.

lib/middleman-php/middleware.rb

@@ -10,13 +10,34 @@ def call(env)
 
       if env['REQUEST_PATH'] =~ /\.php$/
         response.body.map! do |item|
-          `echo #{Shellwords.escape(item)} | php`
+          `echo #{Shellwords.escape(inject_params(env) + item)} | php`
         end
         headers['Content-Length'] = response.body.join.length.to_s
         headers['Content-Type'] = 'text/html'
       end
 
       [status, headers, response]
     end
+
+    private
+
+    def inject_params env
+      injections = []
+      unless env['QUERY_STRING'].empty?
+        injections << { values: env['QUERY_STRING'], array: '$_GET' }
+      end
+      if env['REQUEST_METHOD'] == "POST"
+        input = env["rack.input"].read
+        unless input.length == 0
+          injections << { values: input, array: '$_POST' }
+        end
+      end
+      return '' unless injections.any?
+      injections.collect! do |inj|
+        "parse_str('#{inj[:values]}', #{inj[:array]});"
+      end
+      "<?php #{injections.join(' ')} ?>"
+    end
+
   end
 end