Remove HASH_OF uses in ext/filter

It turns out that all of these places ultimately only accept arrays,
not objects, so we can use Z_ARRVAL_P everywhere.

Also add _deref in a few places where the hash lookup result is
directly type-checked.

Author: nikic

ext/filter/filter.c

@@ -408,11 +408,11 @@ static void php_zval_filter(zval *value, zend_long filter, zend_long flags, zval
 	filter_func.function(value, flags, options, charset);
 
 handle_default:
-	if (options && (Z_TYPE_P(options) == IS_ARRAY || Z_TYPE_P(options) == IS_OBJECT) &&
+	if (options && Z_TYPE_P(options) == IS_ARRAY &&
 		((flags & FILTER_NULL_ON_FAILURE && Z_TYPE_P(value) == IS_NULL) ||
 		(!(flags & FILTER_NULL_ON_FAILURE) && Z_TYPE_P(value) == IS_FALSE))) {
 		zval *tmp;
-		if ((tmp = zend_hash_str_find(HASH_OF(options), "default", sizeof("default") - 1)) != NULL) {
+		if ((tmp = zend_hash_str_find(Z_ARRVAL_P(options), "default", sizeof("default") - 1)) != NULL) {
 			ZVAL_COPY(value, tmp);
 		}
 	}
@@ -613,22 +613,19 @@ static void php_filter_call(zval *filtered, zend_long filter, zval *filter_args,
 			filter = lval;
 		}
 	} else if (filter_args) {
-		if ((option = zend_hash_str_find(HASH_OF(filter_args), "filter", sizeof("filter") - 1)) != NULL) {
+		if ((option = zend_hash_str_find(Z_ARRVAL_P(filter_args), "filter", sizeof("filter") - 1)) != NULL) {
 			filter = zval_get_long(option);
 		}
 
-		if ((option = zend_hash_str_find(HASH_OF(filter_args), "flags", sizeof("flags") - 1)) != NULL) {
+		if ((option = zend_hash_str_find(Z_ARRVAL_P(filter_args), "flags", sizeof("flags") - 1)) != NULL) {
 			filter_flags = zval_get_long(option);
 
 			if (!(filter_flags & FILTER_REQUIRE_ARRAY ||  filter_flags & FILTER_FORCE_ARRAY)) {
 				filter_flags |= FILTER_REQUIRE_SCALAR;
 			}
 		}
 
-		if ((option = zend_hash_str_find(HASH_OF(filter_args), "options", sizeof("options") - 1)) != NULL) {
-			/* avoid reference type */
-			ZVAL_DEREF(option);
-
+		if ((option = zend_hash_str_find_deref(Z_ARRVAL_P(filter_args), "options", sizeof("options") - 1)) != NULL) {
 			if (filter != FILTER_CALLBACK) {
 				if (Z_TYPE_P(option) == IS_ARRAY) {
 					options = option;
@@ -744,13 +741,13 @@ PHP_FUNCTION(filter_input)
 		if (filter_args) {
 			if (Z_TYPE_P(filter_args) == IS_LONG) {
 				filter_flags = Z_LVAL_P(filter_args);
-			} else if (Z_TYPE_P(filter_args) == IS_ARRAY && (option = zend_hash_str_find(HASH_OF(filter_args), "flags", sizeof("flags") - 1)) != NULL) {
+			} else if (Z_TYPE_P(filter_args) == IS_ARRAY && (option = zend_hash_str_find(Z_ARRVAL_P(filter_args), "flags", sizeof("flags") - 1)) != NULL) {
 				filter_flags = zval_get_long(option);
 			}
 			if (Z_TYPE_P(filter_args) == IS_ARRAY &&
-				(opt = zend_hash_str_find(HASH_OF(filter_args), "options", sizeof("options") - 1)) != NULL &&
+				(opt = zend_hash_str_find_deref(Z_ARRVAL_P(filter_args), "options", sizeof("options") - 1)) != NULL &&
 				Z_TYPE_P(opt) == IS_ARRAY &&
-				(def = zend_hash_str_find(HASH_OF(opt), "default", sizeof("default") - 1)) != NULL) {
+				(def = zend_hash_str_find_deref(Z_ARRVAL_P(opt), "default", sizeof("default") - 1)) != NULL) {
 				ZVAL_COPY(return_value, def);
 				return;
 			}
@@ -821,7 +818,7 @@ PHP_FUNCTION(filter_input_array)
 		if (op) {
 			if (Z_TYPE_P(op) == IS_LONG) {
 				filter_flags = Z_LVAL_P(op);
-			} else if (Z_TYPE_P(op) == IS_ARRAY && (option = zend_hash_str_find(HASH_OF(op), "flags", sizeof("flags") - 1)) != NULL) {
+			} else if (Z_TYPE_P(op) == IS_ARRAY && (option = zend_hash_str_find(Z_ARRVAL_P(op), "flags", sizeof("flags") - 1)) != NULL) {
 				filter_flags = zval_get_long(option);
 			}
 		}

ext/filter/logical_filters.c

@@ -39,7 +39,7 @@
    	var_name = 0; \
 	var_name##_set = 0; \
 	if (option_array) { \
-		if ((option_val = zend_hash_str_find(HASH_OF(option_array), option_name, sizeof(option_name) - 1)) != NULL) {	\
+		if ((option_val = zend_hash_str_find(Z_ARRVAL_P(option_array), option_name, sizeof(option_name) - 1)) != NULL) {	\
 			var_name = zval_get_long(option_val); \
 			var_name##_set = 1; \
 		} \
@@ -52,7 +52,7 @@
 	var_name##_set = 0; \
 	var_name##_len = 0; \
 	if (option_array) { \
-		if ((option_val = zend_hash_str_find(HASH_OF(option_array), option_name, sizeof(option_name) - 1)) != NULL) { \
+		if ((option_val = zend_hash_str_find_deref(Z_ARRVAL_P(option_array), option_name, sizeof(option_name) - 1)) != NULL) { \
 			if (Z_TYPE_P(option_val) == IS_STRING) { \
 				var_name = Z_STRVAL_P(option_val); \
 				var_name##_len = Z_STRLEN_P(option_val); \
@@ -67,7 +67,7 @@
 	var_name = NULL; \
 	var_name##_set = 0; \
 	if (option_array) { \
-		if ((option_val = zend_hash_str_find(HASH_OF(option_array), option_name, sizeof(option_name) - 1)) != NULL) { \
+		if ((option_val = zend_hash_str_find_deref(Z_ARRVAL_P(option_array), option_name, sizeof(option_name) - 1)) != NULL) { \
 			if (Z_TYPE_P(option_val) == IS_STRING) { \
 				var_name = Z_STR_P(option_val); \
 				var_name##_set = 1; \