Fixed "in" operator

lib/Twig/Extension/Core.php

@@ -893,15 +893,15 @@ function twig_sort_filter($array)
 function twig_in_filter($value, $compare)
 {
     if (is_array($compare)) {
-        return in_array($value, $compare, is_object($value));
+        return in_array($value, $compare, true);
     } elseif (is_string($compare)) {
-        if (!strlen($value)) {
-            return empty($compare);
+        if (!is_string($value)) {
+            return false;
         }
 
-        return false !== strpos($compare, (string) $value);
+        return '' === $value || false !== strpos($compare, $value);
     } elseif ($compare instanceof Traversable) {
-        return in_array($value, iterator_to_array($compare, false), is_object($value));
+        return in_array($value, iterator_to_array($compare, false), true);
     }
 
     return false;

test/Twig/Tests/Fixtures/tests/in.test

@@ -33,8 +33,23 @@ TRUE
 {% if '0' in '0' %}
 TRUE
 {% endif %}
+{{ false in [0, 1] ? 'TRUE' : 'FALSE' }}
+{{ true in [0, 1] ? 'TRUE' : 'FALSE' }}
+{{ '0' in [0, 1] ? 'TRUE' : 'FALSE' }}
+{{ '' in [0, 1] ? 'TRUE' : 'FALSE' }}
+{{ 0 in ['', 1] ? 'TRUE' : 'FALSE' }}
+{{ '' in 'foo' ? 'TRUE' : 'FALSE' }}
+{{ 0 in 'foo' ? 'TRUE' : 'FALSE' }}
+{{ false in 'foo' ? 'TRUE' : 'FALSE' }}
+{{ true in '100' ? 'TRUE' : 'FALSE' }}
+{{ [] in 'Array' ? 'TRUE' : 'FALSE' }}
+{{ [] in [true, false] ? 'TRUE' : 'FALSE' }}
+{{ [] in [true, ''] ? 'TRUE' : 'FALSE' }}
+{{ [] in [true, []] ? 'TRUE' : 'FALSE' }}
+{{ dir_object in 'foo'~dir_name ? 'TRUE' : 'FALSE' }}
+{{ 5 in 125 ? 'TRUE' : 'FALSE' }}
 --DATA--
-return array('bar' => 'bar', 'foo' => array('bar' => 'bar'))
+return array('bar' => 'bar', 'foo' => array('bar' => 'bar'), 'dir_name' => dirname(__FILE__), 'dir_object' => new SplFileInfo(dirname(__FILE__)))
 --EXPECT--
 TRUE
 TRUE
@@ -45,4 +60,18 @@ TRUE
 TRUE
 TRUE
 TRUE
+FALSE
+FALSE
+FALSE
+FALSE
+FALSE
 TRUE
+FALSE
+FALSE
+FALSE
+FALSE
+FALSE
+FALSE
+TRUE
+FALSE
+FALSE