Ticket #39007: 39007.2.diff

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

@@ -352 +352 @@
         }
 
         /**
+         * Return the current priority level of the currently running iteration of the hook.
+         *
+         * @since 4.7.0
+         * @access public
+         *
+         * @return int|false If the hook is running, return the current priority level. If it isn't running, return false.
+         */
+        public function current_priority() {
+                if ( false === current( $this->iterations ) ) {
+                        return false;
+                }
+
+                return current( current( $this->iterations ) );
+        }
+
+        /**
          * Normalizes filters set up before WordPress has initialized to WP_Hook objects.
          *
          * @since 4.7.0

tests/phpunit/tests/filters.php

@@ -347 +347 @@
 
                 $this->assertSame( $val, apply_filters_deprecated( 'tests_apply_filters_deprecated', array( $val ), '4.6' ) );
         }
+
+        private $current_priority;
+        /**
+         * @ticket 39007
+         */
+        public function test_current_priority() {
+                add_action( 'test_current_priority', array( $this, '_current_priority_action' ), 99 );
+                do_action( 'test_current_priority' );
+                remove_action( 'test_current_priority', array( $this, '_current_priority_action' ), 99 );
+
+                $this->assertSame( 99, $this->current_priority );
+        }
+
+        public function _current_priority_action() {
+                global $wp_filter;
+                $this->current_priority = $wp_filter[ current_filter() ]->current_priority();
+        }
+
+        /**
+         * @ticket 39007
+         */
+        public function test_other_priority() {
+                add_action( 'test_current_priority', array( $this, '_other_priority_action' ), 99 );
+                do_action( 'test_current_priority' );
+                remove_action( 'test_current_priority', array( $this, '_other_priority_action' ), 99 );
+
+                $this->assertSame( false, $this->current_priority );
+        }
+
+        public function _other_priority_action() {
+                global $wp_filter;
+                $this->current_priority = $wp_filter[ 'the_content' ]->current_priority();
+        }
 }