Twenty Seventeen: Avoid an undefined index notice after [39291].

props westonruter.
see #38847.


git-svn-id: https://develop.svn.wordpress.org/trunk@39317 602fd350-edb4-49c9-b593-d223f7449a82
This commit is contained in:
Helen Hou-Sandi 2016-11-19 04:54:14 +00:00
parent bc11236b4c
commit e1215e1268

View File

@ -435,9 +435,12 @@ add_filter( 'wp_calculate_image_sizes', 'twentyseventeen_content_image_sizes_att
* @return string The filtered header image HTML.
*/
function twentyseventeen_header_image_tag( $html, $header, $attr ) {
return str_replace( $attr['sizes'], '100vw', $html );
if ( isset( $attr['sizes'] ) ) {
$html = str_replace( $attr['sizes'], '100vw', $html );
}
return $html;
}
add_filter ( 'get_header_image_tag', 'twentyseventeen_header_image_tag', 10, 3 );
add_filter( 'get_header_image_tag', 'twentyseventeen_header_image_tag', 10, 3 );
/**
* Add custom image sizes attribute to enhance responsive image functionality