WP add_shortcode属性未更改属性值

我已经创建了带有属性的简码(在google的帮助下), 但是它不会更改属性值。我已经用谷歌搜索了很多这个问题, 但是没有找到解决方案。
这是我的代码：

function infobox_shortcode( $atts ) {$array = shortcode_atts( array( 'Background' => 'rgba(45, 90, 171, 0.1)', 'Border' => 'rgba(45, 90, 171, 0.5)', 'Color' => '#2561ea', ), $atts ); return "< div class='note' style='background-color:{$array['Background']}; border-color:{$array['Border']}; color:{$array['Color']}; '> < span class='note-icon'> < i class='ti ti-info'> < /i> < /span> < span class='ml-2'> Want to use this template in Shopify, WordPress or other platform? < /span> < /div> "; } add_shortcode( 'InfoBox', 'infobox_shortcode' );

【WP add_shortcode属性未更改属性值】我在主题的index.php页面中这样称呼它：

< ?= do_shortcode('[InfoBox Background="red"]'); ?>

但这并没有改变背景属性的值, 我不知道我要去哪里。如果有人帮助我, 那会有所帮助。
#1属性将是小写字母。

'background' => 'rgba(45, 90, 171, 0.1)', 'border' => 'rgba(45, 90, 171, 0.5)', 'color' => '#2561ea',

Here, some changes in code. Try this one, may this will give you solution or idea about your issue..< ?php function infobox_shortcode( $atts ) {$array = shortcode_atts( array( 'background' => 'rgba(45, 90, 171, 0.1)', 'border' => 'rgba(45, 90, 171, 0.5)', 'color' => '#2561ea', ), $atts); print_r($atts); // Remove, when you are fine with your atts! return 'Hello, World: '.$atts['background']; //Remove, when you are fine with your expected output! $html = '< div class="note" style="background-color:{"'.$atts['background'].'"}; border-color:{"'.$atts['border'].'"}; color:{"'.$atts['color'].'"}; "> < span class="note-icon"> < i class="ti ti-info"> < /i> < /span> < span class="ml-2"> Want to use this template in Shopify, WordPress or other platform?< /span> < /div> '; return $html; }add_shortcode( 'InfoBox', 'infobox_shortcode' ); ?>

#3这对我来说很棒。

function infobox_shortcode($atts, $content = null) {$a = shortcode_atts(array( 'background' => 'rgba(45, 90, 171, 0.1)', 'border' => 'rgba(45, 90, 171, 0.5)', 'color' => '#2561ea', ), $atts); $content = ($content) ? $content : 'Want to use this template in Shopify, WordPress or other platform?'; $output = '< div class="note" style="background-color: ' . $a['background'] . '; border: ' . $a['border'] . '; color: ' . $a['color'] . '; "> '; $output .= '< span class="note-icon"> < i class="ti ti-info"> < /i> < /span> '; $output .= '< span class="ml-2"> '; $output .= $content; $output .= '< /span> '; $output .= '< /div> '; return $output; }add_shortcode('InfoBox', 'infobox_shortcode');

#4这是我的错误, 我使用这样的大写字母创建属性