问题在于当话题名称中有空格时，我需要在对应链接中加上连字符以指向该话题——如何在输出文本中移除连字符但在URL中保留？

我试过str_replace(" ", "-"), 但我不确定。下面是短码

function moretopics($atts){
    $default = array(
        'year' => 'year-8',
        'topic' => 'algebra',
        'yearnohyphen' => 'Year 8',
    );
    $attributes = shortcode_atts($default, $atts);

    $s2writing = "<h4 align='center'>For more " . $attributes['topic'] . " worksheets see <a href='http://websitename.com/" . $attributes['year'] . "-maths-worksheets/" . $attributes['year'] . "-" . $attributes['topic'] . "-worksheets' style='text-decoration:underline'>" . $attributes['yearnohyphen'] . " " . $attributes['topic'] . " Worksheets</a></h4><hr/>";

    return "" . $s2writing . "";
    }
add_shortcode('moretopics', 'moretopics');

例如，短码是：

[moretopics year="Year-8" topic="Mental-Arithmetic" yearnohyphen="Year 8"]

显示为：

For more Mental-Arithmetic worksheets see Year 8 Mental-Arithmetic worksheets

但我希望显示得更自然一些，如：

For more Mental Arithmetic worksheets see Year 8 Mental Arithmetic worksheets

解决方案

我已经尝试了str_replace(" ", "-"), 但我不确定。以下是短码

非常接近，但应该用另一种方法——在属性中自然地以带空格的形式写成 topic="Mental Arithmetic"，然后使用 str_replace() 动态创建一个仅用于URL的带连字符版本，同时保留原本带空格的版本用于显示文本。

下面是如何更新你的函数（$s2writing已更改，请按需要更新）：

function moretopics($atts) {
    $default = [
        'year' => 'year-8',
        'topic' => 'algebra',
        'yearnohyphen' => 'Year 8',
    ];
    $attributes = shortcode_atts($default, $atts);

    // URL-friendly version by replacing spaces with hyphens
    $topic_url = str_replace(" ", "-", $attributes['topic']);

    // Using $attributes['topic'] for the text, and $topic_url for the href link
    $s2writing = "<h4 align='center'>For more " 
        . $attributes['topic'] 
        . " worksheets see <a href='http://websitename.com/" 
        . $attributes['year'] 
        . "-maths-worksheets/" 
        . $attributes['year'] 
        . "-" . $topic_url 
        . "-worksheets' style='text-decoration:underline'>" 
        . $attributes['yearnohyphen'] 
        . " " . $attributes['topic'] 
        . " Worksheets</a></h4><hr/>";

    return $s2writing;
}

add_shortcode('moretopics', 'moretopics');