More consistent formatting of examples in documentation

Doc/Manual/Php.html

@@ -986,14 +986,14 @@ the methods one() and two() (but not three()):
 %feature("director") Foo;
 class Foo {
 public:
-    Foo(int foo);
-    virtual void one();
-    virtual void two();
+  Foo(int foo);
+  virtual void one();
+  virtual void two();
 };
 
 class Bar: public Foo {
 public:
-    virtual void three();
+  virtual void three();
 };
 </pre>
 </div>
@@ -1125,12 +1125,12 @@ Here is an example:
 <pre>
 class Foo {
 public:
-    ...
+  ...
 };
 class FooContainer {
 public:
-    void addFoo(Foo *);
-    ...
+  void addFoo(Foo *);
+  ...
 };
 </pre>
 </div>
@@ -1204,8 +1204,8 @@ suitable exception handler:
 <div class="code">
 <pre>
 %exception {
-    try { $action }
-    catch (Swig::DirectorException &amp;e) { SWIG_fail; }
+  try { $action }
+  catch (Swig::DirectorException &amp;e) { SWIG_fail; }
 }
 </pre>
 </div>