diff --git a/NEWS b/NEWS
index 18c343a7b11..28575db948d 100644
--- a/NEWS
+++ b/NEWS
@@ -12,6 +12,10 @@ PHP                                                                        NEWS
   . Fixed bug #81585 (cached_chunks are not counted to real_size on shutdown).
     (cmb)
 
+- Hash:
+  . Fixed bug GH-7759 (Incorrect return types for hash() and hash_hmac()).
+    (cmb)
+
 - MBString:
   . Fixed bug #81693 (mb_check_encoding(7bit) segfaults). (cmb)
 
diff --git a/Zend/Optimizer/zend_func_infos.h b/Zend/Optimizer/zend_func_infos.h
index 0e18481f407..d0d54989dc7 100644
--- a/Zend/Optimizer/zend_func_infos.h
+++ b/Zend/Optimizer/zend_func_infos.h
@@ -171,9 +171,9 @@ static const func_info_t func_infos[] = {
     F1("gmp_sqrtrem", MAY_BE_ARRAY|MAY_BE_ARRAY_KEY_LONG|MAY_BE_ARRAY_OF_OBJECT),
     F1("gmp_rootrem", MAY_BE_ARRAY|MAY_BE_ARRAY_KEY_LONG|MAY_BE_ARRAY_OF_OBJECT),
     F1("gmp_gcdext", MAY_BE_ARRAY|MAY_BE_ARRAY_KEY_STRING|MAY_BE_ARRAY_OF_OBJECT),
-    F1("hash", MAY_BE_STRING|MAY_BE_FALSE),
+    F1("hash", MAY_BE_STRING),
     F1("hash_file", MAY_BE_STRING|MAY_BE_FALSE),
-    F1("hash_hmac", MAY_BE_STRING|MAY_BE_FALSE),
+    F1("hash_hmac", MAY_BE_STRING),
     F1("hash_hmac_file", MAY_BE_STRING|MAY_BE_FALSE),
     F1("hash_init", MAY_BE_OBJECT),
     F1("hash_final", MAY_BE_STRING),
diff --git a/ext/hash/hash.stub.php b/ext/hash/hash.stub.php
index cbe0ed55596..ce439d620fd 100644
--- a/ext/hash/hash.stub.php
+++ b/ext/hash/hash.stub.php
@@ -3,13 +3,13 @@
 /** @generate-class-entries */
 
 /** @refcount 1 */
-function hash(string $algo, string $data, bool $binary = false, array $options = []): string|false {}
+function hash(string $algo, string $data, bool $binary = false, array $options = []): string {}
 
 /** @refcount 1 */
 function hash_file(string $algo, string $filename, bool $binary = false, array $options = []): string|false {}
 
 /** @refcount 1 */
-function hash_hmac(string $algo, string $data, string $key, bool $binary = false): string|false {}
+function hash_hmac(string $algo, string $data, string $key, bool $binary = false): string {}
 
 /** @refcount 1 */
 function hash_hmac_file(string $algo, string $data, string $key, bool $binary = false): string|false {}
diff --git a/ext/hash/hash_arginfo.h b/ext/hash/hash_arginfo.h
index 0b9d151b310..5a8758bfa2d 100644
--- a/ext/hash/hash_arginfo.h
+++ b/ext/hash/hash_arginfo.h
@@ -1,7 +1,7 @@
 /* This is a generated file, edit the .stub.php file instead.
- * Stub hash: d0ed07f608581a5700a10ec53a817ca788ef9638 */
+ * Stub hash: 715957cf1785912eed75ce92c2a2708defe1ebd7 */
 
-ZEND_BEGIN_ARG_WITH_RETURN_TYPE_MASK_EX(arginfo_hash, 0, 2, MAY_BE_STRING|MAY_BE_FALSE)
+ZEND_BEGIN_ARG_WITH_RETURN_TYPE_INFO_EX(arginfo_hash, 0, 2, IS_STRING, 0)
 	ZEND_ARG_TYPE_INFO(0, algo, IS_STRING, 0)
 	ZEND_ARG_TYPE_INFO(0, data, IS_STRING, 0)
 	ZEND_ARG_TYPE_INFO_WITH_DEFAULT_VALUE(0, binary, _IS_BOOL, 0, "false")
@@ -15,14 +15,19 @@ ZEND_BEGIN_ARG_WITH_RETURN_TYPE_MASK_EX(arginfo_hash_file, 0, 2, MAY_BE_STRING|M
 	ZEND_ARG_TYPE_INFO_WITH_DEFAULT_VALUE(0, options, IS_ARRAY, 0, "[]")
 ZEND_END_ARG_INFO()
 
-ZEND_BEGIN_ARG_WITH_RETURN_TYPE_MASK_EX(arginfo_hash_hmac, 0, 3, MAY_BE_STRING|MAY_BE_FALSE)
+ZEND_BEGIN_ARG_WITH_RETURN_TYPE_INFO_EX(arginfo_hash_hmac, 0, 3, IS_STRING, 0)
 	ZEND_ARG_TYPE_INFO(0, algo, IS_STRING, 0)
 	ZEND_ARG_TYPE_INFO(0, data, IS_STRING, 0)
 	ZEND_ARG_TYPE_INFO(0, key, IS_STRING, 0)
 	ZEND_ARG_TYPE_INFO_WITH_DEFAULT_VALUE(0, binary, _IS_BOOL, 0, "false")
 ZEND_END_ARG_INFO()
 
-#define arginfo_hash_hmac_file arginfo_hash_hmac
+ZEND_BEGIN_ARG_WITH_RETURN_TYPE_MASK_EX(arginfo_hash_hmac_file, 0, 3, MAY_BE_STRING|MAY_BE_FALSE)
+	ZEND_ARG_TYPE_INFO(0, algo, IS_STRING, 0)
+	ZEND_ARG_TYPE_INFO(0, data, IS_STRING, 0)
+	ZEND_ARG_TYPE_INFO(0, key, IS_STRING, 0)
+	ZEND_ARG_TYPE_INFO_WITH_DEFAULT_VALUE(0, binary, _IS_BOOL, 0, "false")
+ZEND_END_ARG_INFO()
 
 ZEND_BEGIN_ARG_WITH_RETURN_OBJ_INFO_EX(arginfo_hash_init, 0, 1, HashContext, 0)
 	ZEND_ARG_TYPE_INFO(0, algo, IS_STRING, 0)