Ticket #42209: 42209.diff

src/wp-includes/class-wp-taxonomy.php

@@ -332 +332 @@
                 $args['cap'] = (object) array_merge( $default_caps, $args['capabilities'] );
                 unset( $args['capabilities'] );
 
-                $args['object_type'] = array_unique( (array) $object_type );
+                $args['object_type'] = array_values( array_unique( (array) $object_type ) );
 
                 // If not set, use the default meta box
                 if ( null === $args['meta_box_cb'] ) {

tests/phpunit/tests/taxonomy/getObjectTaxonomies.php

@@ -81 +81 @@
                 $this->assertInternalType( 'object', $found['wptests_tax2'] );
                 $this->assertSame( 'wptests_tax2', $found['wptests_tax2']->name );
         }
+
+        /**
+         * @ticket 42209
+         */
+        public function test_should_ensure_sequential_array_index_of_post_types() {
+                register_taxonomy( 'foo', array(
+                        0 => 'post',
+                        1 => 'page',
+                ) );
+                register_taxonomy( 'bar', array(
+                        0 => 'post',
+                        2 => 'page',
+                ) );
+
+                $foo = get_taxonomy( 'foo' );
+                $bar = get_taxonomy( 'bar' );
+
+                $expected = array( 'post', 'page' );
+
+                $this->assertSame( $expected, $foo->object_type );
+                $this->assertSame( $expected, $bar->object_type );
+        }
 }