我在一个网站上工作，该网站具有输出图片标题的功能，是信用/日期，但如果只定义了信用/日期，而标题不存在，则不起作用。如果是这种情况，函数将忽略图像，并将其包装在一个p标记中，我认为默认情况下，它是由wordpress生成的，我甚至无法理解代码的来源。有没有办法让这个函数在没有标题的情况下输出信用/日期？

    function update_caption_shortcode( $empty, $attr, $content ){


    $atts = shortcode_atts( array(
        \'id\'      => \'\',
        \'align\'   => \'alignnone\',
        \'width\'   => \'\',
        \'caption\' => \'\',
        \'class\'   => \'\',
    ), $attr, \'caption\' );

    $atts[\'width\'] = (int) $atts[\'width\'];
    if ( $atts[\'width\'] < 1 || empty( $atts[\'caption\'] ) )
        return $content;

    if ( ! empty( $atts[\'id\'] ) )
        $atts[\'id\'] = \'id="\' . esc_attr( sanitize_html_class( $atts[\'id\'] ) ) . \'" \';

    $class = trim( \'wp-caption \' . $atts[\'align\'] . \' \' . $atts[\'class\'] );

    $html5 = current_theme_supports( \'html5\', \'caption\' );
    $width = $html5 ? $atts[\'width\'] : ( 10 + $atts[\'width\'] );

    $caption_width = apply_filters( \'img_caption_shortcode_width\', $width, $atts, $content );

    //Get att id
    $att_id      = str_replace(\'"\', "", $atts[\'id\']);
    $att_id      = explode(\'_\', $att_id);
    $att_id      = intval( $att_id[1] );
    $attachment  = get_post( $att_id );
    if (isset($attachment)) {
        $credits = get_post_meta( $att_id, \'photographer_name\', true );
        $date    = get_post_meta( $att_id, \'photo_date\', true );
    }

    $style = \'\';
    if ( $caption_width )
        $style = \'style="width: \' . (int) $caption_width . \'px" \';

    $html = \'\';

    if ( $html5 ) {
        $html = \'<figure \' . $atts[\'id\'] . $style . \'class="\' . esc_attr( $class ) . \'">\'
                . do_shortcode( $content ) . \'<figcaption class="image__slide-meta">\';
        $html .= ( isset( $atts[\'caption\'] ) && \'\' != $atts[\'caption\'] ) ? \'<span class="caption__text">\' . $atts[\'caption\'] . \'</span>\' : \'\';
        $html .= ( isset( $credits ) && \'\' != $credits) ? \'<span class="caption__source">\'.$credits.\'</span> \' : \'\';
        $html .= ( isset( $date) && \'\' != $date ) ? \'<span class="caption__date">\'.$date.\'</span>\' : \'\';
        $html .= \'</figcaption></figure>\';

    } else {
        $html = \'<div \' . $atts[\'id\'] . $style . \'class="\' . esc_attr( $class ) . \'">\'
                . do_shortcode( $content ) . \'<p class="wp-caption-text">\' . $atts[\'caption\'] . \'</p></div>\';
    }

    return $html;

}
add_filter( \'img_caption_shortcode\', \'update_caption_shortcode\', 10, 3 );