diff --git a/dictionaries/CallMap.php b/dictionaries/CallMap.php
index b64a4da67..23a892696 100644
--- a/dictionaries/CallMap.php
+++ b/dictionaries/CallMap.php
@@ -6762,36 +6762,36 @@ return [
 'memcache_set_compress_threshold' => ['bool', 'memcache_obj'=>'Memcache', 'threshold'=>'int', 'min_savings='=>'float'],
 'memcache_set_failure_callback' => ['', 'memcache_obj'=>'Memcache'],
 'memcache_set_server_params' => ['bool', 'memcache_obj'=>'Memcache', 'host'=>'string', 'port='=>'int', 'timeout='=>'int', 'retry_interval='=>'int', 'status='=>'bool', 'failure_callback='=>'callable'],
-'Memcached::__construct' => ['void', 'persistent_id='=>'mixed|string', 'on_new_object_cb='=>'mixed'],
+'Memcached::__construct' => ['void', 'persistent_id='=>'?string', 'callback='=>'?callable', 'connection_str='=>'?string'],
 'Memcached::add' => ['bool', 'key'=>'string', 'value'=>'mixed', 'expiration='=>'int'],
 'Memcached::addByKey' => ['bool', 'server_key'=>'string', 'key'=>'string', 'value'=>'mixed', 'expiration='=>'int'],
 'Memcached::addServer' => ['bool', 'host'=>'string', 'port'=>'int', 'weight='=>'int'],
 'Memcached::addServers' => ['bool', 'servers'=>'array'],
-'Memcached::append' => ['bool', 'key'=>'string', 'value'=>'string'],
-'Memcached::appendByKey' => ['bool', 'server_key'=>'string', 'key'=>'string', 'value'=>'string'],
-'Memcached::cas' => ['bool', 'cas_token'=>'float', 'key'=>'string', 'value'=>'mixed', 'expiration='=>'int'],
-'Memcached::casByKey' => ['bool', 'cas_token'=>'float', 'server_key'=>'string', 'key'=>'string', 'value'=>'mixed', 'expiration='=>'int'],
+'Memcached::append' => ['?bool', 'key'=>'string', 'value'=>'string'],
+'Memcached::appendByKey' => ['?bool', 'server_key'=>'string', 'key'=>'string', 'value'=>'string'],
+'Memcached::cas' => ['bool', 'cas_token'=>'string|int|float', 'key'=>'string', 'value'=>'mixed', 'expiration='=>'int'],
+'Memcached::casByKey' => ['bool', 'cas_token'=>'string|int|float', 'server_key'=>'string', 'key'=>'string', 'value'=>'mixed', 'expiration='=>'int'],
 'Memcached::decrement' => ['int|false', 'key'=>'string', 'offset='=>'int', 'initial_value='=>'int', 'expiry='=>'int'],
 'Memcached::decrementByKey' => ['int|false', 'server_key'=>'string', 'key'=>'string', 'offset='=>'int', 'initial_value='=>'int', 'expiry='=>'int'],
 'Memcached::delete' => ['bool', 'key'=>'string', 'time='=>'int'],
 'Memcached::deleteByKey' => ['bool', 'server_key'=>'string', 'key'=>'string', 'time='=>'int'],
 'Memcached::deleteMulti' => ['array', 'keys'=>'array', 'time='=>'int'],
-'Memcached::deleteMultiByKey' => ['bool', 'server_key'=>'string', 'keys'=>'array', 'time='=>'int'],
+'Memcached::deleteMultiByKey' => ['array', 'server_key'=>'string', 'keys'=>'array', 'time='=>'int'],
 'Memcached::fetch' => ['array|false'],
 'Memcached::fetchAll' => ['array|false'],
 'Memcached::flush' => ['bool', 'delay='=>'int'],
-'Memcached::flushBuffers' => [''],
-'Memcached::get' => ['mixed|false', 'key'=>'string', 'cache_cb='=>'?callable', 'flags='=>'int'],
+'Memcached::flushBuffers' => ['bool'],
+'Memcached::get' => ['mixed|false', 'key'=>'string', 'cache_cb='=>'?callable', 'get_flags='=>'int'],
 'Memcached::getAllKeys' => ['array|false'],
-'Memcached::getByKey' => ['mixed|false', 'server_key'=>'string', 'key'=>'string', 'value_cb='=>'?callable', 'flags='=>'int'],
-'Memcached::getDelayed' => ['bool', 'keys'=>'array', 'with_cas='=>'bool', 'value_cb='=>'callable'],
+'Memcached::getByKey' => ['mixed|false', 'server_key'=>'string', 'key'=>'string', 'cache_cb='=>'?callable', 'get_flags='=>'int'],
+'Memcached::getDelayed' => ['bool', 'keys'=>'array', 'with_cas='=>'bool', 'value_cb='=>'?callable'],
 'Memcached::getDelayedByKey' => ['bool', 'server_key'=>'string', 'keys'=>'array', 'with_cas='=>'bool', 'value_cb='=>'?callable'],
-'Memcached::getLastDisconnectedServer' => [''],
-'Memcached::getLastErrorCode' => [''],
-'Memcached::getLastErrorErrno' => [''],
-'Memcached::getLastErrorMessage' => [''],
-'Memcached::getMulti' => ['array|false', 'keys'=>'array', 'flags='=>'int'],
-'Memcached::getMultiByKey' => ['array|false', 'server_key'=>'string', 'keys'=>'array', 'flags='=>'int'],
+'Memcached::getLastDisconnectedServer' => ['array|false'],
+'Memcached::getLastErrorCode' => ['int'],
+'Memcached::getLastErrorErrno' => ['int'],
+'Memcached::getLastErrorMessage' => ['string'],
+'Memcached::getMulti' => ['array|false', 'keys'=>'array', 'get_flags='=>'int'],
+'Memcached::getMultiByKey' => ['array|false', 'server_key'=>'string', 'keys'=>'array', 'get_flags='=>'int'],
 'Memcached::getOption' => ['mixed|false', 'option'=>'int'],
 'Memcached::getResultCode' => ['int'],
 'Memcached::getResultMessage' => ['string'],
@@ -6803,23 +6803,23 @@ return [
 'Memcached::incrementByKey' => ['int|false', 'server_key'=>'string', 'key'=>'string', 'offset='=>'int', 'initial_value='=>'int', 'expiry='=>'int'],
 'Memcached::isPersistent' => ['bool'],
 'Memcached::isPristine' => ['bool'],
-'Memcached::prepend' => ['bool', 'key'=>'string', 'value'=>'string'],
-'Memcached::prependByKey' => ['bool', 'server_key'=>'string', 'key'=>'string', 'value'=>'string'],
+'Memcached::prepend' => ['?bool', 'key'=>'string', 'value'=>'string'],
+'Memcached::prependByKey' => ['?bool', 'server_key'=>'string', 'key'=>'string', 'value'=>'string'],
 'Memcached::quit' => ['bool'],
 'Memcached::replace' => ['bool', 'key'=>'string', 'value'=>'mixed', 'expiration='=>'int'],
 'Memcached::replaceByKey' => ['bool', 'server_key'=>'string', 'key'=>'string', 'value'=>'mixed', 'expiration='=>'int'],
 'Memcached::resetServerList' => ['bool'],
 'Memcached::set' => ['bool', 'key'=>'string', 'value'=>'mixed', 'expiration='=>'int'],
-'Memcached::setBucket' => ['', 'host_map'=>'array', 'forward_map'=>'array', 'replicas'=>''],
+'Memcached::setBucket' => ['bool', 'host_map'=>'array', 'forward_map'=>'?array', 'replicas'=>'int'],
 'Memcached::setByKey' => ['bool', 'server_key'=>'string', 'key'=>'string', 'value'=>'mixed', 'expiration='=>'int'],
-'Memcached::setEncodingKey' => ['', 'key'=>''],
+'Memcached::setEncodingKey' => ['bool', 'key'=>'string'],
 'Memcached::setMulti' => ['bool', 'items'=>'array', 'expiration='=>'int'],
 'Memcached::setMultiByKey' => ['bool', 'server_key'=>'string', 'items'=>'array', 'expiration='=>'int'],
 'Memcached::setOption' => ['bool', 'option'=>'int', 'value'=>'mixed'],
 'Memcached::setOptions' => ['bool', 'options'=>'array'],
-'Memcached::setSaslAuthData' => ['void', 'username'=>'string', 'password'=>'string'],
-'Memcached::touch' => ['bool', 'key'=>'string', 'expiration'=>'int'],
-'Memcached::touchByKey' => ['bool', 'server_key'=>'string', 'key'=>'string', 'expiration'=>'int'],
+'Memcached::setSaslAuthData' => ['bool', 'username'=>'string', 'password'=>'string'],
+'Memcached::touch' => ['bool', 'key'=>'string', 'expiration='=>'int'],
+'Memcached::touchByKey' => ['bool', 'server_key'=>'string', 'key'=>'string', 'expiration='=>'int'],
 'MemcachePool::add' => ['bool', 'key'=>'string', 'var'=>'mixed', 'flag='=>'int', 'expire='=>'int'],
 'MemcachePool::addServer' => ['bool', 'host'=>'string', 'port='=>'int', 'persistent='=>'bool', 'weight='=>'int', 'timeout='=>'int', 'retry_interval='=>'int', 'status='=>'bool', 'failure_callback='=>'?callable', 'timeoutms='=>'int'],
 'MemcachePool::append' => [''],
diff --git a/dictionaries/CallMap_historical.php b/dictionaries/CallMap_historical.php
index 4645caba3..e4f52d08d 100644
--- a/dictionaries/CallMap_historical.php
+++ b/dictionaries/CallMap_historical.php
@@ -3479,36 +3479,36 @@ return [
     'MemcachePool::setCompressThreshold' => ['bool', 'thresold'=>'int', 'min_saving='=>'float'],
     'MemcachePool::setFailureCallback' => [''],
     'MemcachePool::setServerParams' => ['bool', 'host'=>'string', 'port='=>'int', 'timeout='=>'int', 'retry_interval='=>'int', 'status='=>'bool', 'failure_callback='=>'?callable'],
-    'Memcached::__construct' => ['void', 'persistent_id='=>'mixed|string', 'on_new_object_cb='=>'mixed'],
+    'Memcached::__construct' => ['void', 'persistent_id='=>'?string', 'callback='=>'?callable', 'connection_str='=>'?string'],
     'Memcached::add' => ['bool', 'key'=>'string', 'value'=>'mixed', 'expiration='=>'int'],
     'Memcached::addByKey' => ['bool', 'server_key'=>'string', 'key'=>'string', 'value'=>'mixed', 'expiration='=>'int'],
     'Memcached::addServer' => ['bool', 'host'=>'string', 'port'=>'int', 'weight='=>'int'],
     'Memcached::addServers' => ['bool', 'servers'=>'array'],
-    'Memcached::append' => ['bool', 'key'=>'string', 'value'=>'string'],
-    'Memcached::appendByKey' => ['bool', 'server_key'=>'string', 'key'=>'string', 'value'=>'string'],
-    'Memcached::cas' => ['bool', 'cas_token'=>'float', 'key'=>'string', 'value'=>'mixed', 'expiration='=>'int'],
-    'Memcached::casByKey' => ['bool', 'cas_token'=>'float', 'server_key'=>'string', 'key'=>'string', 'value'=>'mixed', 'expiration='=>'int'],
+    'Memcached::append' => ['?bool', 'key'=>'string', 'value'=>'string'],
+    'Memcached::appendByKey' => ['?bool', 'server_key'=>'string', 'key'=>'string', 'value'=>'string'],
+    'Memcached::cas' => ['bool', 'cas_token'=>'string|int|float', 'key'=>'string', 'value'=>'mixed', 'expiration='=>'int'],
+    'Memcached::casByKey' => ['bool', 'cas_token'=>'string|int|float', 'server_key'=>'string', 'key'=>'string', 'value'=>'mixed', 'expiration='=>'int'],
     'Memcached::decrement' => ['int|false', 'key'=>'string', 'offset='=>'int', 'initial_value='=>'int', 'expiry='=>'int'],
     'Memcached::decrementByKey' => ['int|false', 'server_key'=>'string', 'key'=>'string', 'offset='=>'int', 'initial_value='=>'int', 'expiry='=>'int'],
     'Memcached::delete' => ['bool', 'key'=>'string', 'time='=>'int'],
     'Memcached::deleteByKey' => ['bool', 'server_key'=>'string', 'key'=>'string', 'time='=>'int'],
     'Memcached::deleteMulti' => ['array', 'keys'=>'array', 'time='=>'int'],
-    'Memcached::deleteMultiByKey' => ['bool', 'server_key'=>'string', 'keys'=>'array', 'time='=>'int'],
+    'Memcached::deleteMultiByKey' => ['array', 'server_key'=>'string', 'keys'=>'array', 'time='=>'int'],
     'Memcached::fetch' => ['array|false'],
     'Memcached::fetchAll' => ['array|false'],
     'Memcached::flush' => ['bool', 'delay='=>'int'],
-    'Memcached::flushBuffers' => [''],
-    'Memcached::get' => ['mixed|false', 'key'=>'string', 'cache_cb='=>'?callable', 'flags='=>'int'],
+    'Memcached::flushBuffers' => ['bool'],
+    'Memcached::get' => ['mixed|false', 'key'=>'string', 'cache_cb='=>'?callable', 'get_flags='=>'int'],
     'Memcached::getAllKeys' => ['array|false'],
-    'Memcached::getByKey' => ['mixed|false', 'server_key'=>'string', 'key'=>'string', 'value_cb='=>'?callable', 'flags='=>'int'],
-    'Memcached::getDelayed' => ['bool', 'keys'=>'array', 'with_cas='=>'bool', 'value_cb='=>'callable'],
+    'Memcached::getByKey' => ['mixed|false', 'server_key'=>'string', 'key'=>'string', 'cache_cb='=>'?callable', 'get_flags='=>'int'],
+    'Memcached::getDelayed' => ['bool', 'keys'=>'array', 'with_cas='=>'bool', 'value_cb='=>'?callable'],
     'Memcached::getDelayedByKey' => ['bool', 'server_key'=>'string', 'keys'=>'array', 'with_cas='=>'bool', 'value_cb='=>'?callable'],
-    'Memcached::getLastDisconnectedServer' => [''],
-    'Memcached::getLastErrorCode' => [''],
-    'Memcached::getLastErrorErrno' => [''],
-    'Memcached::getLastErrorMessage' => [''],
-    'Memcached::getMulti' => ['array|false', 'keys'=>'array', 'flags='=>'int'],
-    'Memcached::getMultiByKey' => ['array|false', 'server_key'=>'string', 'keys'=>'array', 'flags='=>'int'],
+    'Memcached::getLastDisconnectedServer' => ['array|false'],
+    'Memcached::getLastErrorCode' => ['int'],
+    'Memcached::getLastErrorErrno' => ['int'],
+    'Memcached::getLastErrorMessage' => ['string'],
+    'Memcached::getMulti' => ['array|false', 'keys'=>'array', 'get_flags='=>'int'],
+    'Memcached::getMultiByKey' => ['array|false', 'server_key'=>'string', 'keys'=>'array', 'get_flags='=>'int'],
     'Memcached::getOption' => ['mixed|false', 'option'=>'int'],
     'Memcached::getResultCode' => ['int'],
     'Memcached::getResultMessage' => ['string'],
@@ -3520,23 +3520,23 @@ return [
     'Memcached::incrementByKey' => ['int|false', 'server_key'=>'string', 'key'=>'string', 'offset='=>'int', 'initial_value='=>'int', 'expiry='=>'int'],
     'Memcached::isPersistent' => ['bool'],
     'Memcached::isPristine' => ['bool'],
-    'Memcached::prepend' => ['bool', 'key'=>'string', 'value'=>'string'],
-    'Memcached::prependByKey' => ['bool', 'server_key'=>'string', 'key'=>'string', 'value'=>'string'],
+    'Memcached::prepend' => ['?bool', 'key'=>'string', 'value'=>'string'],
+    'Memcached::prependByKey' => ['?bool', 'server_key'=>'string', 'key'=>'string', 'value'=>'string'],
     'Memcached::quit' => ['bool'],
     'Memcached::replace' => ['bool', 'key'=>'string', 'value'=>'mixed', 'expiration='=>'int'],
     'Memcached::replaceByKey' => ['bool', 'server_key'=>'string', 'key'=>'string', 'value'=>'mixed', 'expiration='=>'int'],
     'Memcached::resetServerList' => ['bool'],
     'Memcached::set' => ['bool', 'key'=>'string', 'value'=>'mixed', 'expiration='=>'int'],
-    'Memcached::setBucket' => ['', 'host_map'=>'array', 'forward_map'=>'array', 'replicas'=>''],
+    'Memcached::setBucket' => ['bool', 'host_map'=>'array', 'forward_map'=>'?array', 'replicas'=>'int'],
     'Memcached::setByKey' => ['bool', 'server_key'=>'string', 'key'=>'string', 'value'=>'mixed', 'expiration='=>'int'],
-    'Memcached::setEncodingKey' => ['', 'key'=>''],
+    'Memcached::setEncodingKey' => ['bool', 'key'=>'string'],
     'Memcached::setMulti' => ['bool', 'items'=>'array', 'expiration='=>'int'],
     'Memcached::setMultiByKey' => ['bool', 'server_key'=>'string', 'items'=>'array', 'expiration='=>'int'],
     'Memcached::setOption' => ['bool', 'option'=>'int', 'value'=>'mixed'],
     'Memcached::setOptions' => ['bool', 'options'=>'array'],
-    'Memcached::setSaslAuthData' => ['void', 'username'=>'string', 'password'=>'string'],
-    'Memcached::touch' => ['bool', 'key'=>'string', 'expiration'=>'int'],
-    'Memcached::touchByKey' => ['bool', 'server_key'=>'string', 'key'=>'string', 'expiration'=>'int'],
+    'Memcached::setSaslAuthData' => ['bool', 'username'=>'string', 'password'=>'string'],
+    'Memcached::touch' => ['bool', 'key'=>'string', 'expiration='=>'int'],
+    'Memcached::touchByKey' => ['bool', 'server_key'=>'string', 'key'=>'string', 'expiration='=>'int'],
     'MessageFormatter::__construct' => ['void', 'locale'=>'string', 'pattern'=>'string'],
     'MessageFormatter::create' => ['MessageFormatter', 'locale'=>'string', 'pattern'=>'string'],
     'MessageFormatter::format' => ['false|string', 'args'=>'array'],
diff --git a/tests/Internal/Codebase/InternalCallMapHandlerTest.php b/tests/Internal/Codebase/InternalCallMapHandlerTest.php
index ddce4bea2..3aabd226d 100644
--- a/tests/Internal/Codebase/InternalCallMapHandlerTest.php
+++ b/tests/Internal/Codebase/InternalCallMapHandlerTest.php
@@ -407,6 +407,8 @@ class InternalCallMapHandlerTest extends TestCase
         'memcache_set_compress_threshold',
         'memcache_set_failure_callback',
         'memcache_set_server_params',
+        'memcached::cas', // memcached 3.2.0 has incorrect reflection
+        'memcached::casbykey', // memcached 3.2.0 has incorrect reflection
         'memcachepool::add',
         'memcachepool::addserver',
         'memcachepool::append',