Wordpress:限制帖子内容中的标签链接 [英] Wordpress: Limit Tag Links in Post Content

问题描述

我真的很沮丧，我是 wordpress 的新手，我正在尝试限制在帖子内容文章中出现的最大标签链接数.下面是我的代码.我不知道如何修复它.

I really frustrated, I am a novice in wordpress I am trying to Limit Maximum Numbers of Tag Links to appear within post content article. Below is my code. I don't know how to fix it up.

function link_words( $text ) {

    $replace = array();
    $tags = get_tags();
$count=0;
    if ( $tags ) {
        foreach ( $tags as $tag ) {
            $count++;
            $replace[ $tag->name ] = sprintf( '<a href="%s">%s</a>', esc_url( get_term_link( $tag ) ), esc_html( $tag->name ) );
              if( $count > 2 ) break;
        }
    }

    $text = str_replace( array_keys($replace), $replace, $text );
    return $text;
}
add_filter( 'the_content', 'link_words' );

推荐答案

好的，我想我现在明白你想要什么了...

Ok, so I think I understand what you want better now...

             function link_words( $text ) {
            $tags = get_tags();
            if ( $tags ) {
                foreach ( $tags as $tag ) {
                    $from = '!<h2>[^<>]*<\/h2>(*SKIP)(*F)|<b>[^<>]*<\/b>(*SKIP)(*F)|<a\b[^>]*>.*?</a>(*SKIP)(*F)|(\b'.$tag->name.'\b)(?=[^>]*(?:<|$))!';
                    $to = sprintf( ' <a href="%s">%s</a> ', esc_url( get_term_link( $tag ) ), esc_html( $tag->name ) );
                    $text = preg_replace($from, $to , $text, 2);
                }
            }
            return $text;
        }
        add_filter( 'the_content', 'link_words' );

由于 preg_replace (2) 的限制，并且它在标签循环内，这将替换文本中每个标签的标签名称的两个实例......这是否符合您的要求?请注意，这不是不区分大小写的，因此如果您的标签是句子中的第一个单词并且大写，则它将不匹配.要做这样的事情，也许看看这个线程:PHP preg_replace:不区分大小写的匹配和区分大小写的替换

Because of the limit on preg_replace (2), and it being inside the tag-loop, this replaces two instances of a tag name in the text for every tag... Is this along the lines of what you want? Be aware that this is not case-insensitive, so it will not match if your tag is the first word in a sentence, and is capitalized. To do something like that, maybe take a look at this thread: PHP preg_replace: Case insensitive match with case sensitive replacement

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