Make it a deprecation instead

Author: nikic

Zend/tests/bug71428.3.phpt

@@ -7,6 +7,6 @@ class B           {  public function m(A $a = NULL, $n) { echo "B.m";} };
 class C extends B {  public function m(A $a       , $n) { echo "C.m";} };
 ?>
 --EXPECTF--
-Warning: Required parameter $n follows optional parameter in %s on line 3
+Deprecated: Required parameter $n follows optional parameter in %s on line %d
 
 Fatal error: Declaration of C::m(A $a, $n) must be compatible with B::m(?A $a, $n) in %sbug71428.3.php on line 4

Zend/tests/call_user_func_005.phpt

@@ -18,7 +18,7 @@ var_dump(call_user_func(array('foo', 'teste')));
 
 ?>
 --EXPECTF--
-Warning: Required parameter $b follows optional parameter in %s on line %d
+Deprecated: Required parameter $b follows optional parameter in %s on line %d
 string(1) "x"
 array(1) {
   [0]=>

Zend/zend_compile.c

@@ -5741,7 +5741,7 @@ void zend_compile_params(zend_ast *ast, zend_ast *return_type_ast) /* {{{ */
 			default_node.op_type = IS_UNUSED;
 			op_array->required_num_args = i + 1;
 			if (have_optional_param) {
-				zend_error(E_COMPILE_WARNING, "Required parameter $%s follows optional parameter",
+				zend_error(E_DEPRECATED, "Required parameter $%s follows optional parameter",
 					ZSTR_VAL(name));
 			}
 		}

ext/reflection/tests/bug62715.phpt

@@ -17,7 +17,7 @@ foreach ($r->getParameters() as $p) {
 }
 ?>
 --EXPECTF--
-Warning: Required parameter $c follows optional parameter in %s on line %d
+Deprecated: Required parameter $c follows optional parameter in %s on line %d
 bool(true)
 bool(true)
 bool(false)