QA - ftp_connect - error behavior when connection fails

Co-authored-by: Christoph M. Becker <cmbecker69@gmx.de>

Closes GH-9002.

ext/ftp/tests/ftp_connect_001.phpt

@@ -0,0 +1,12 @@
+--TEST--
+ftp_connect - return FALSE if connection fails and Waning is generated
+--EXTENSIONS--
+ftp
+--FILE--
+<?php
+$ftp = ftp_connect('dummy-host-name', 21, 5);
+var_dump($ftp);
+?>
+--EXPECTF--
+Warning: ftp_connect(): php_network_getaddresses: getaddrinfo for dummy-host-name failed: %s in %s on line %d
+bool(false)