Add stream_socket_{client,server} stubs for @param-out

conf/config.neon

@@ -136,6 +136,8 @@ parameters:
 		- ../stubs/typeCheckingFunctions.stub
 		- ../stubs/Countable.stub
 		- ../stubs/file.stub
+		- ../stubs/stream_socket_client.stub
+		- ../stubs/stream_socket_server.stub
 	earlyTerminatingMethodCalls: []
 	earlyTerminatingFunctionCalls: []
 	resultCachePath: %tmpDir%/resultCache.php

stubs/stream_socket_client.stub

@@ -0,0 +1,20 @@
+<?php
+
+/**
+ * @param int|null $error_code
+ * @param-out int|null $error_code
+ * @param string|null $error_message
+ * @param-out string|null $error_message
+ * @param float|null $timeout
+ * @param resource|null $context
+ * @return resource|false
+ */
+function stream_socket_client(
+    string $address,
+    &$error_code = null,
+    &$error_message = null,
+    $timeout = null,
+    int $flags = STREAM_CLIENT_CONNECT,
+    $context = null
+) {
+}

stubs/stream_socket_server.stub

@@ -0,0 +1,18 @@
+<?php
+
+/**
+ * @param int|null $error_code
+ * @param-out int|null $error_code
+ * @param string|null $error_message
+ * @param-out string|null $error_message
+ * @param resource|null $context
+ * @return resource|false
+ */
+function stream_socket_server(
+    string $address,
+    &$error_code = null,
+    &$error_message = null,
+    int $flags = STREAM_SERVER_BIND | STREAM_SERVER_LISTEN,
+    $context = null
+) {
+}