我使用了一个高级插件（用于主题开发），其中包含WordPress导入器插件，我收到了一个弃用的通知：

“wp\\u get\\u http已deprecated. 改用WP\\U Http“

但是WP\\U Http将我发送到this function.

问题是如何使用wp_http_supports 在以下代码中，而不是wp_get_http:

function fetch_remote_file( $url, $post ) {
    // extract the file name and extension from the url
    $file_name = basename( $url );

    // get placeholder file in the upload dir with a unique, sanitized filename
    $upload = wp_upload_bits( $file_name, 0, \'\', $post[\'upload_date\'] );
    if ( $upload[\'error\'] )
        return new WP_Error( \'upload_dir_error\', $upload[\'error\'] );

    // fetch the remote url and write it to the placeholder file
    $headers = wp_get_http( $url, $upload[\'file\'] );

    // request failed
    if ( ! $headers ) {
        @unlink( $upload[\'file\'] );
        return new WP_Error( \'import_file_error\', __(\'Remote server did not respond\', \'wordpress-importer\') );
    }

    // make sure the fetch was successful
    if ( $headers[\'response\'] != \'200\' ) {
        @unlink( $upload[\'file\'] );
        return new WP_Error( \'import_file_error\', sprintf( __(\'Remote server returned error response %1$d %2$s\', \'wordpress-importer\'), esc_html($headers[\'response\']), get_status_header_desc($headers[\'response\']) ) );
    }

    $filesize = filesize( $upload[\'file\'] );

    if ( isset( $headers[\'content-length\'] ) && $filesize != $headers[\'content-length\'] ) {
        @unlink( $upload[\'file\'] );
        return new WP_Error( \'import_file_error\', __(\'Remote file is incorrect size\', \'wordpress-importer\') );
    }

    if ( 0 == $filesize ) {
        @unlink( $upload[\'file\'] );
        return new WP_Error( \'import_file_error\', __(\'Zero size file downloaded\', \'wordpress-importer\') );
    }

    $max_size = (int) $this->max_attachment_size();
    if ( ! empty( $max_size ) && $filesize > $max_size ) {
        @unlink( $upload[\'file\'] );
        return new WP_Error( \'import_file_error\', sprintf(__(\'Remote file is too large, limit is %s\', \'wordpress-importer\'), size_format($max_size) ) );
    }

    // keep track of the old and new urls so we can substitute them later
    $this->url_remap[$url] = $upload[\'url\'];
    $this->url_remap[$post[\'guid\']] = $upload[\'url\']; // r13735, really needed?
    // keep track of the destination if the remote url is redirected somewhere else
    if ( isset($headers[\'x-final-location\']) && $headers[\'x-final-location\'] != $url )
        $this->url_remap[$headers[\'x-final-location\']] = $upload[\'url\'];

    return $upload;
}