remove php/sension extensions if building on rtd

source/conf.py

@@ -16,11 +16,15 @@
 import sys
 import os
 
+# on_rtd is whether we are on readthedocs.org, this line of code grabbed from docs.readthedocs.org
+on_rtd = os.environ.get('READTHEDOCS', None) == 'True'
+
 # If extensions (or modules to document with autodoc) are in another directory,
 # add these directories to sys.path here. If the directory is relative to the
 # documentation root, use os.path.abspath to make it absolute, like shown here.
 #sys.path.insert(0, os.path.abspath('.'))
 
+if not on_rtd:
     sys.path.append(os.path.abspath('./../_exts/sphinx-php'))
 
 
@@ -40,6 +44,10 @@ from pygments.lexers.web import PhpLexer
 extensions = [
     'sphinx.ext.autodoc',
     'sphinx.ext.todo', 
+]
+
+if not on_rtd:
+    extensions += [
     'sensio.sphinx.refinclude',
     'sensio.sphinx.configurationblock',
     'sensio.sphinx.phpcode',
@@ -110,6 +118,7 @@ pygments_style = 'sphinx'
 #keep_warnings = False
 
 # -- Settings for symfony doc extension ---------------------------------------------------
+if not on_rtd:
     # enable highlighting for PHP code not between ``<?php ... ?>`` by default
     lexers['php'] = PhpLexer(startinline=True)
     lexers['php-annotations'] = PhpLexer(startinline=True)
@@ -360,8 +369,7 @@ epub_exclude_files = ['search.html']
 # If false, no index is generated.
 #epub_use_index = True
 
-# on_rtd is whether we are on readthedocs.org, this line of code grabbed from docs.readthedocs.org
-on_rtd = os.environ.get('READTHEDOCS', None) == 'True'
+
 
 #-- Options for todo