Add symbol_exists

Author: Ayesh

Zend/Optimizer/zend_func_infos.h

@@ -11,6 +11,7 @@ static const func_info_t func_infos[] = {
 	F1("get_declared_classes", MAY_BE_ARRAY|MAY_BE_ARRAY_KEY_LONG|MAY_BE_ARRAY_OF_STRING),
 	F1("get_declared_traits", MAY_BE_ARRAY|MAY_BE_ARRAY_KEY_LONG|MAY_BE_ARRAY_OF_STRING),
 	F1("get_declared_interfaces", MAY_BE_ARRAY|MAY_BE_ARRAY_KEY_LONG|MAY_BE_ARRAY_OF_STRING),
+	F1("get_declared_symbols", MAY_BE_ARRAY|MAY_BE_ARRAY_KEY_LONG|MAY_BE_ARRAY_OF_STRING),
 	F1("get_defined_functions", MAY_BE_ARRAY|MAY_BE_ARRAY_KEY_STRING|MAY_BE_ARRAY_OF_ARRAY),
 	F1("get_defined_vars", MAY_BE_ARRAY|MAY_BE_ARRAY_KEY_STRING|MAY_BE_ARRAY_OF_ANY|MAY_BE_ARRAY_OF_REF),
 	F1("get_resource_type", MAY_BE_STRING),

Zend/zend_builtin_functions.c

@@ -1157,6 +1157,11 @@ ZEND_FUNCTION(enum_exists)
 	class_exists_impl(INTERNAL_FUNCTION_PARAM_PASSTHRU, ZEND_ACC_ENUM, 0);
 }
 
+ZEND_FUNCTION(symbol_exists)
+{
+	class_exists_impl(INTERNAL_FUNCTION_PARAM_PASSTHRU, ZEND_ACC_LINKED, 0);
+}
+
 /* {{{ Checks if the function exists */
 ZEND_FUNCTION(function_exists)
 {
@@ -1382,7 +1387,7 @@ static inline void get_declared_class_impl(INTERNAL_FUNCTION_PARAMETERS, int fla
 	ZEND_HASH_FILL_PACKED(Z_ARRVAL_P(return_value)) {
 		ZEND_HASH_MAP_FOREACH_STR_KEY_VAL(EG(class_table), key, zv) {
 			ce = Z_PTR_P(zv);
-			if ((ce->ce_flags & (ZEND_ACC_LINKED|ZEND_ACC_INTERFACE|ZEND_ACC_TRAIT)) == flags
+			if ((ce->ce_flags & (flags|ZEND_ACC_LINKED|ZEND_ACC_INTERFACE|ZEND_ACC_TRAIT)) == flags
 			 && key
 			 && ZSTR_VAL(key)[0] != 0) {
 				ZEND_HASH_FILL_GROW();
@@ -1420,6 +1425,13 @@ ZEND_FUNCTION(get_declared_interfaces)
 }
 /* }}} */
 
+/* {{{ Returns an array of all declared symbols. */
+ZEND_FUNCTION(get_declared_symbols)
+{
+	get_declared_class_impl(INTERNAL_FUNCTION_PARAM_PASSTHRU, ZEND_ACC_LINKED|ZEND_ACC_INTERFACE|ZEND_ACC_TRAIT);
+}
+/* }}} */
+
 /* {{{ Returns an array of all defined functions */
 ZEND_FUNCTION(get_defined_functions)
 {

Zend/zend_builtin_functions.stub.php

@@ -91,6 +91,8 @@ function trait_exists(string $trait, bool $autoload = true): bool {}
 
 function enum_exists(string $enum, bool $autoload = true): bool {}
 
+function symbol_exists(string $symbol, bool $autoload = true): bool {}
+
 function function_exists(string $function): bool {}
 
 function class_alias(string $class, string $alias, bool $autoload = true): bool {}
@@ -140,6 +142,12 @@ function get_declared_traits(): array {}
  */
 function get_declared_interfaces(): array {}
 
+/**
+ * @return array<int, string>
+ * @refcount 1
+ */
+function get_declared_symbols(): array {}
+
 /**
  * @return array<string, array>
  * @refcount 1