Implemented instance invoke

Zend/tests/instance_invoke_001.phpt

@@ -0,0 +1,31 @@
+--TEST--
+Instance invoke 
+--FILE--
+<?php
+
+class Foo
+{
+    public function __invoke() {
+        echo "okey";
+    }
+}
+
+(new Foo())();
+
+class Bar
+{
+    public function __invoke($name) {
+        return $name;
+    }
+}
+
+var_dump((new Bar())());
+var_dump((new Bar())("okey"));
+
+--EXPECTF--
+okey
+Warning: Missing argument 1 for Bar::__invoke(), called in %sinstance_invoke_001.php on line %d and defined in %sinstance_invoke_001.php on line %d
+
+Notice: Undefined variable: name in %sinstance_invoke_001.php on line %d
+NULL
+string(4) "okey"

Zend/tests/instance_invoke_002.phpt

@@ -0,0 +1,13 @@
+--TEST--
+Instance invoke 
+--FILE--
+<?php
+
+class Foo
+{
+}
+
+(new Foo())();
+
+--EXPECTF--
+Fatal error: Function name must be a string in %sinstance_invoke_002.php on line %d

Zend/tests/instance_invoke_003.phpt

@@ -0,0 +1,27 @@
+--TEST--
+Instance invoke 
+--FILE--
+<?php
+
+class Foo
+{
+    public $var = "foo";
+    public function dummy() {
+        var_dump(__METHOD__);
+    }
+    public function __invoke() {
+        return $this;
+    }
+    public function __get($name) {
+        return $name;
+    }
+}
+
+(new Foo())()->dummy();
+var_dump((new Foo())->var);
+var_dump((new Foo())->noexists);
+
+--EXPECT--
+string(10) "Foo::dummy"
+string(3) "foo"
+string(8) "noexists"

Zend/zend_language_parser.y

@@ -727,6 +727,8 @@ instance_call:
 		/* empty */ 		{ $$ = $0; }
 	|	{ zend_do_push_object(&$0 TSRMLS_CC); zend_do_begin_variable_parse(TSRMLS_C); }
 		chaining_instance_call	{ zend_do_pop_object(&$$ TSRMLS_CC); zend_do_end_variable_parse(&$2, BP_VAR_R, 0 TSRMLS_CC); }
+	|	{ zend_do_begin_dynamic_function_call(&$0, 0 TSRMLS_CC); }
+		function_call_parameter_list { zend_do_end_function_call(&$0, &$$, &$2, 0, 1 TSRMLS_CC); zend_do_extended_fcall_end(TSRMLS_C); } instance_call { $$ = $4; }
 ;
 
 new_expr: