php: Fix overloaded directed methods with non-void return

We were treating  such methods like constructors and assigning to the
internal _cPtr, which just seems bizarrely wrong.

Fixes #1900

CHANGES.current

@@ -7,6 +7,10 @@ the issue number to the end of the URL: https://github.com/swig/swig/issues/
 Version 4.1.0 (in progress)
 ===========================
 
+2021-03-18: olly
+	    #1900, #1905 [PHP] Fix wrapping of overloaded directed methods with
+	    non-void return.
+
 2021-03-11: murillo128
             #1498 [Javascript] Support type conversion.
 

Examples/test-suite/director_overload.i

@@ -47,5 +47,14 @@ public:
   virtual void notover(int *p) const {}
 };
 
-%}
+class OverloadedGetSet
+{
+  int v;
+public:
+  OverloadedGetSet() : v(42) { }
+  virtual ~OverloadedGetSet() { }
+  virtual int rw() const { return v; }
+  virtual void rw(int new_v) { v = new_v; }
+};
 
+%}

Examples/test-suite/php/director_overload_runme.php

@@ -0,0 +1,18 @@
+
+<?php
+
+require "tests.php";
+require "director_overload.php";
+
+check::functions(array('new_overloadedClass','new_overloadedPointers','new_overloadedGetSet','overloadedclass_method1','overloadedclass_method3','overloadedclass_method2','overloadedpointers_method','overloadedpointers_notover','overloadedgetset_rw'));
+
+check::classes(array('OverloadedClass','OverloadedPointers','OverloadedGetSet'));
+check::globals(array());
+
+$o = new OverloadedGetSet;
+check::equal($o->rw(), 42, "get_set() initial value not 42");
+check::equal($o->rw(7), null, "get_set() failed to set");
+check::equal($o->rw(), 7, "get_set() didn't return back set value");
+
+check::done();
+?>

Source/Modules/php.cxx

@@ -1566,7 +1566,7 @@ public:
 	      Printf(prepare, "case %d: ", ++last_handled_i);
 	    }
 	    if (non_void_return) {
-	      if ((!directorsEnabled() || !Swig_directorclass(n)) && !constructor) {
+	      if (!constructor) {
 		Append(prepare, "$r=");
 	      } else if (wrapperType == staticmemberfn || wrapperType == staticmembervar) {
 		Append(prepare, "$r=");
@@ -1590,7 +1590,7 @@ public:
 	if (had_a_case)
 	  Printf(prepare, "default: ");
 	if (non_void_return) {
-	  if ((!directorsEnabled() || !Swig_directorclass(n)) && !constructor) {
+	  if (!constructor) {
 	    Append(prepare, "$r=");
 	  } else if (wrapperType == staticmemberfn || wrapperType == staticmembervar) {
 	    Append(prepare, "$r=");