diff --git a/.travis.yml b/.travis.yml
index 4aae7552..02c367a9 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -8,8 +8,6 @@ php:
 
 matrix:
     fast_finish: true
-    allow_failures:
-        - php: 7.1
 
 env:
     - LIBMEMCACHED_VERSION=1.0.18 # Debian Jessie / Ubuntu Xenial
@@ -31,6 +29,4 @@ script:
 
 cache:
     directories: 
-    - $HOME/cache
-
-    
+    - $HOME/cache
\ No newline at end of file
diff --git a/package.xml b/package.xml
index 0dd61ada..2091f2e2 100644
--- a/package.xml
+++ b/package.xml
@@ -165,6 +165,7 @@ Tests
     <file role='test' name='stats.phpt'/>
     <file role='test' name='default_behavior.phpt'/>
     <file role='test' name='reset_keyprefix.phpt'/>
+    <file role='test' name='session_lock-php71.phpt'/>
   </dir>
  </dir>
  </contents>
diff --git a/tests/invoke_callback_2.phpt b/tests/invoke_callback_2.phpt
index 07e84f94..9749ed18 100644
--- a/tests/invoke_callback_2.phpt
+++ b/tests/invoke_callback_2.phpt
@@ -18,9 +18,9 @@ function init_cb_fail($m, $id) {
 	echo "configured, should not be called.\n";
 }
 
-function init_cb_arg($m, $id, $arg) {
+function init_cb_arg($m, $id) {
+	var_dump(func_num_args());
 	var_dump($id);
-	var_dump($arg);
 }
 
 function init_nopersist_cb($m, $id) {
@@ -33,15 +33,14 @@ class Foo extends Memcached {
 		parent::__construct($id, array($this, 'init'));
 	}
 
-	function init($obj, $id, $options) {
+	function init($obj, $id) {
+		var_dump(func_num_args());
 		var_dump($this->isPristine());
 		var_dump($this->isPersistent());
 		var_dump($id);
 	}
 }
 
-error_reporting(0);
-
 echo "cb call\n";
 $m1 = new Memcached('foo1', 'init_cb');
 
@@ -50,7 +49,6 @@ $m1 = new Memcached('foo1', 'init_cb_fail');
 
 echo "cb arg without arg\n";
 $m1 = new Memcached('foo3', 'init_cb_arg');
-echo $php_errormsg, "\n";
 
 echo "cb arg not persistent\n";
 $m1 = new Memcached(null, 'init_nopersist_cb');
@@ -63,7 +61,7 @@ $m1 = new Foo('baz');
 
 echo "cb second persistent in object\n";
 $m1 = new Foo('baz');
-
+?>
 --EXPECT--
 cb call
 string(9) "Memcached"
@@ -71,17 +69,18 @@ bool(true)
 string(4) "foo1"
 cb not run
 cb arg without arg
+int(2)
 string(4) "foo3"
-NULL
-
 cb arg not persistent
 bool(false)
 NULL
 cb in object
+int(2)
 bool(true)
 bool(false)
 NULL
 cb persistent in object
+int(2)
 bool(true)
 bool(true)
 string(3) "baz"
diff --git a/tests/session_lock-php71.phpt b/tests/session_lock-php71.phpt
new file mode 100644
index 00000000..207f64cf
--- /dev/null
+++ b/tests/session_lock-php71.phpt
@@ -0,0 +1,62 @@
+--TEST--
+Session lock
+--SKIPIF--
+<?php 
+include dirname(__FILE__) . "/skipif.inc"; 
+if (!Memcached::HAVE_SESSION) print "skip";
+
+if (PHP_VERSION_ID < 70100) print "skip";
+?>
+--INI--
+memcached.sess_locking       = true
+memcached.sess_lock_wait_min = 500
+memcached.sess_lock_wait_max = 1000
+memcached.sess_lock_retries  = 3
+memcached.sess_prefix        = "memc.test."
+
+session.save_handler = memcached
+
+--FILE--
+<?php
+
+include dirname (__FILE__) . '/config.inc';
+
+$m = new Memcached();
+$m->addServer(MEMC_SERVER_HOST, MEMC_SERVER_PORT);
+
+ob_start();
+ini_set ('session.save_path', MEMC_SERVER_HOST . ':' . MEMC_SERVER_PORT);
+
+session_start();
+$session_id = session_id();
+
+$_SESSION["test"] = "hello";
+session_write_close();
+
+session_start();
+var_dump ($m->get ('memc.test.' . session_id()));
+var_dump ($m->get ('memc.test.lock.' . session_id()));
+session_write_close();
+var_dump ($m->get ('memc.test.lock.' . session_id()));
+
+// Test lock min / max
+$m->set ('memc.test.lock.' . $session_id, '1');
+
+$time_start = microtime(true);
+session_start();
+$time = microtime(true) - $time_start;
+
+if (round ($time, 1) != 2.5) {
+	echo "Waited longer than expected: $time" . PHP_EOL;
+}
+echo "OK";
+
+--EXPECTF--
+string(17) "test|s:5:"hello";"
+string(1) "1"
+bool(false)
+
+Warning: session_start(): Unable to clear session lock record in %s on line %d
+
+Warning: session_start(): Failed to read session data: memcached (path: 127.0.0.1:11211) in %s on line %d
+OK
diff --git a/tests/session_lock.phpt b/tests/session_lock.phpt
index 79c32888..570e5a2a 100644
--- a/tests/session_lock.phpt
+++ b/tests/session_lock.phpt
@@ -4,6 +4,8 @@ Session lock
 <?php 
 include dirname(__FILE__) . "/skipif.inc"; 
 if (!Memcached::HAVE_SESSION) print "skip";
+
+if (PHP_VERSION_ID >= 70100) print "skip";
 ?>
 --INI--
 memcached.sess_locking       = true