Ticket #35902: 35902.diff

src/wp-includes/query.php

@@ -4502 +4502 @@
 
                 $page_obj = $this->get_queried_object();
 
-                $page = (array) $page;
+                $page = array_map( 'strval', (array) $page );
 
                 if ( in_array( (string) $page_obj->ID, $page ) ) {
                         return true;

tests/phpunit/tests/query/conditionals.php

@@ -1017 +1017 @@
                 $this->assertFalse( is_page_template( array( 'test.php' ) ) );
                 $this->assertTrue( is_page_template( array('test.php', 'example.php') ) );
         }
+
+        /**
+         * @ticket 35902
+         */
+        function test_page_should_cast_argument_to_string() {
+                $page_1 = self::factory()->post->create( array( 'post_type' => 'page', 'post_title' => 'About' ) );
+                $page_2 = self::factory()->post->create( array( 'post_type' => 'page', 'post_title' => "$page_1/7 About" ) );
+                $this->go_to( get_permalink( $page_2 ) );
+                $this->assertQueryTrue( 'is_page', 'is_singular' );
+                $this->assertTrue( is_page( $page_2 ) );
+                $this->assertFalse( is_page( $page_1 ) );
+        }
 }