Ticket #23636: 23636.2.patch

src/wp-includes/taxonomy.php

@@ -1804 +1804 @@
         }
 
         if ( ! empty( $args['slug'] ) ) {
-                $slug = sanitize_title( $args['slug'] );
-                $where .= " AND t.slug = '$slug'";
+                if ( is_array( $args['slug'] ) ) {
+                        $slug = array_map( 'sanitize_title', $args['slug'] );
+                        $where .= " AND t.slug IN ('" . implode( "', '", $slug ) . "')";
+                } else {
+                        $slug = sanitize_title( $args['slug'] );
+                        $where .= " AND t.slug = '$slug'";
+                }
         }
 
         if ( ! empty( $args['name__like'] ) ) {

tests/phpunit/tests/term/getTerms.php

@@ -352 +352 @@
                 add_filter( 'wp_update_term_parent', 'wp_check_term_hierarchy_for_loops', 10, 3 );
         }
 
+        function test_get_terms_by_slug() {
+                $foo = $this->factory->tag->create( array( 'slug' => 'foo' ) );
+
+                $found = get_terms( 'post_tag', array(
+                        'hide_empty' => false,
+                        'fields' => 'ids',
+                        'slug' => 'foo',
+                ) );
+
+                $this->assertEquals( array( $foo ), $found );
+        }
+
+        function test_get_terms_by_multiple_slugs() {
+                $foo = $this->factory->tag->create( array( 'slug' => 'foo' ) );
+                $bar = $this->factory->tag->create( array( 'slug' => 'bar' ) );
+
+                $found = get_terms( 'post_tag', array(
+                        'hide_empty' => false,
+                        'fields' => 'ids',
+                        'slug' => array( 'foo', 'bar' )
+                ) );
+
+                $this->assertEquals( array( $foo, $bar ), $found );
+        }
+
         public function test_get_terms_hierarchical_tax_hide_empty_false_fields_ids() {
                 // Set up a clean taxonomy.
                 $tax = 'hierarchical_fields';