public static linkHandler ( array $matches, array $attr, string $url, array $rawattr ) : string | ||
$matches | array | The regex matches from the provided regex when calling {@link wp_embed_register_handler()}. |
$attr | array | Embed attributes. Not used. |
$url | string | The original URL that was matched by the regex. Not used. |
$rawattr | array | The original unmodified attributes. Not used. |
return | string | HTML markup for the Periscope On Air button or an empty string if requirements not met |