Fix bug #62441

These checks were introduced by 8646d9a
back when name resolution was working differently.

Author: nikic

Zend/tests/bug62441.phpt

@@ -0,0 +1,20 @@
+--TEST--
+Bug #62441: Incorrect strong typing in namespaced child classes
+--FILE--
+<?php
+namespace {
+    interface Iface {
+        function method(stdClass $o);
+    }
+}
+namespace ns {
+    class Foo implements \Iface {
+        function method(stdClass $o) { }
+    }
+    
+    (new Foo)->method(new \stdClass);
+}
+?>
+--EXPECTF--
+Fatal error: Declaration of ns\Foo::method(ns\stdClass $o) must be compatible with Iface::method(stdClass $o) in %s on line %d
+

Zend/zend_inheritance.c

@@ -213,15 +213,11 @@ static int zend_do_perform_type_hint_check(const zend_function *fe, zend_arg_inf
 		}
 
 		if (strcasecmp(ZSTR_VAL(fe_class_name), ZSTR_VAL(proto_class_name)) != 0) {
-			const char *colon;
-
 			if (fe->common.type != ZEND_USER_FUNCTION) {
 				zend_string_release(proto_class_name);
 				zend_string_release(fe_class_name);
 				return 0;
-			} else if (strchr(ZSTR_VAL(proto_class_name), '\\') != NULL ||
-					(colon = zend_memrchr(ZSTR_VAL(fe_class_name), '\\', ZSTR_LEN(fe_class_name))) == NULL ||
-					strcasecmp(colon+1, ZSTR_VAL(proto_class_name)) != 0) {
+			} else {
 				zend_class_entry *fe_ce, *proto_ce;
 
 				fe_ce = zend_lookup_class(fe_class_name);