bug #119 Update is_countable to include countable objects that doesn't implement \Countable (pierredup)

This PR was merged into the 1.8-dev branch.

Discussion
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Update is_countable to include countable objects that doesn't implement \Countable

Some objects are countable but don't implement `Countable` ([#115#issuecomment-384361414](#115 (comment)))

The objects that I could identify that is countable is `ResourceBundle` and `SimpleXmlElement`

Commits
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b53929e Update is_countable to include countable objects that doesn't implement \Countable

Author: nicolas-grekas

Diff for: .travis.yml

@@ -17,6 +17,9 @@ matrix:
         - php: 7.0
         - php: 7.1
         - php: 7.2
+        - php: nightly
+    allow_failures:
+        - php: nightly
     fast_finish: true
 
 before_install:

Diff for: src/Php73/bootstrap.php

@@ -11,6 +11,6 @@
 
 if (PHP_VERSION_ID < 70300) {
     if (!function_exists('is_countable')) {
-        function is_countable($var) { return is_array($var) || $var instanceof Countable; }
+        function is_countable($var) { return is_array($var) || $var instanceof Countable || $var instanceof ResourceBundle || $var instanceof SimpleXmlElement; }
     }
 }

Diff for: tests/Php73/Php73Test.php

@@ -23,6 +23,8 @@ public function testIsCountable()
         $this->assertTrue(is_countable(array(1, 2, '3')));
         $this->assertTrue(is_countable(new \ArrayIterator(array('foo', 'bar', 'baz'))));
         $this->assertTrue(is_countable(new \ArrayIterator()));
+        $this->assertTrue(is_countable(new \SimpleXMLElement('<foo><bar/><bar/><bar/></foo>')));
+        $this->assertTrue(is_countable(\ResourceBundle::create('en', __DIR__.'/fixtures')));
         $this->assertFalse(is_countable(new \stdClass()));
     }