Function only exists since 5.3

Need to maintain back compat
joedolson · Dec 17, 2020 · db80268 · db80268
1 parent 8f79f10
commit db80268
Showing 1 changed file with 13 additions and 11 deletions.
diff --git a/src/wp-accessibility-longdesc.php b/src/wp-accessibility-longdesc.php
@@ -170,14 +170,16 @@ function wpa_longdesc_add_attr( $html, $id, $caption, $title, $align, $url, $siz
 	return $html;
 }
 
-/**
- * Core function. Add reference style for long description.
- */
-register_block_style(
-	'core/image',
-	array(
-		'name'         => 'longdesc',
-		'label'        => __( 'Has Long Description', 'wp-accessibility' ),
-		'style_handle' => 'longdesc-style',
-	)
-);
+if ( function_exists( 'register_block_style' ) ) {
+	/**
+	 * Core function. Add reference style for long description.
+	 */
+	register_block_style(
+		'core/image',
+		array(
+			'name'         => 'longdesc',
+			'label'        => __( 'Has Long Description', 'wp-accessibility' ),
+			'style_handle' => 'longdesc-style',
+		)
+	);
+}