blocks|key|4072545|text|如果你想替换帖子内容中的硬编码链接，我建议你使用wordpress的"the_content“过滤器。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|4072546|https://codex.wordpress.org/Plugin_API/Filter_Reference/the_content|offset|length|4072547|add_filter(+'the_content',+'filter_function_name'+)|code-block|syntax|javascript|4072548|由此，您应该能够使用正则表达式匹配链接并将/amp附加到该链接。|4072549|伪代码示例：|4072550|function+my_the_content_filter($content)
{
++++if+(function_exists('is_amp_endpoint')+&&+is_amp_endpoint())+{
++++++++$patterns+=+array(
++++++++++++//patterns
++++++++);
++++++++$replacements+=+array(
+++++++++++//replacements

++++++++);
++++++++$content+=+preg_replace($patterns,+$replacements,+$content);
++++}

++++return+$content;
}

add_filter('the_content',+'my_the_content_filter');|4072551|entityMap|0|LINK|mutability|MUTABLE|url^0|0|0|1V|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|X|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|Y|8|@]|9|@$D|Z|E|10|1|11]]|A|$]]|$1|F|3|G|5|H|7|12|8|@]|9|@]|A|$I|J]]|$1|K|3|L|5|6|7|13|8|@]|9|@]|A|$]]|$1|M|3|N|5|6|7|14|8|@]|9|@]|A|$]]|$1|O|3|P|5|H|7|15|8|@]|9|@]|A|$I|J]]|$1|Q|3|-4|5|6|7|16|8|@]|9|@]|A|$]]]|R|$S|$5|T|U|V|A|$W|C]]]]

If you want to replace hardcoded links inside of your post content I would suggest you use the "the_content" filter for wordpress.

<a href="https://codex.wordpress.org/Plugin_API/Filter_Reference/the_content" rel="nofollow noreferrer">https://codex.wordpress.org/Plugin_API/Filter_Reference/the_content</a>

<pre><code>add_filter( 'the_content', 'filter_function_name' )
</code></pre>

From this you should be able to regular expression match the link and append /amp to it.

Pseudo code example:

<pre><code>function my_the_content_filter($content)
{
 if (function_exists('is_amp_endpoint') &amp;&amp; is_amp_endpoint()) {
 $patterns = array(
 //patterns
 );
 $replacements = array(
 //replacements

 );
 $content = preg_replace($patterns, $replacements, $content);
 }

 return $content;
}

add_filter('the_content', 'my_the_content_filter');
</code></pre>

blocks|key|4071066|text|将这些函数添加到主题的'functions.php‘中。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|4071067|/*+post+link+filter+*/
add_filter(+'post_link',+'change_amp_url',+10,+2+);

function+change_amp_url(+$url,+$postobj+)+{
++++static+$recursing+=+false;
++++if+(+$recursing+)+{
++++++++return+$url;
++++}

++++$recursing+=+true;
++++if+(+function_exists(+'is_amp_endpoint'+)+&&+is_amp_endpoint()+)+{
++++++++if+(+function_exists(+'post_supports_amp'+)+&&+post_supports_amp(+$postobj+)+)+{
++++++++++++$url+=+amp_get_permalink(+$postobj->ID+);+++++++++++
++++++++}
++++}
++++$recursing+=+false;
++++return+$url;
}

/*+content+link+filter+*/
add_filter(+'the_content',+'change_amp_url_content'+);

function+change_amp_url_content($content)
{
++++$dom+=+new+DOMDocument();
++++$dom->loadHTML($content);

++++$tags+=+$dom->getElementsByTagName('a');
++++foreach+($tags+as+$tag)+{
++++++++$link+=+$tag->getAttribute('href');+//+original+url
++++++++$extralink+=+'';
++++++++if(stristr($link,'#'))+{
++++++++++++$pagelinktemp+=+explode("#",$link);
++++++++++++$pagelink+=+$pagelinktemp[0];
++++++++++++$extralink+=+'#'.$pagelinktemp[1];
++++++++}+else+{
++++++++++++$pagelink+=+$link;
++++++++}
++++++++if($pagelink!="")+{+++++
++++++++++++$postid+=+url_to_postid($pagelink);
++++++++++++$postobj+=+get_post($postid);+//+getting+appropriate+post+object++++++++++++
++++++++++++if($postobj)+{++++++++++
++++++++++++++++$newlink+=+change_amp_url(+$pagelink,+$postobj+);+//new+url
++++++++++++}
++++++++++++else+{
++++++++++++++++$newlink+=+$link;
++++++++++++}
++++++++}
++++++++else+{
++++++++++++$newlink+=+$link;
++++++++}
++++++++if($link+!=+$newlink)+//+change+if+only+links+are+different
++++++++{
++++++++++++$content+=+str_replace($link,+$newlink.$extralink,+$content);
++++++++}
++++}
++++return+$content;
}

/*+override+canonical+link+*/
add_filter(+'wpseo_canonical',+'amp_override_canonical'+);

function+amp_override_canonical($url)+{
++++if+(+substr($url,-4)=="/amp"+)+{++++
++++++++$url+=+substr($url,0,-4);
++++}
++++return+$url;
}|code-block|syntax|javascript|4071068|第一个函数将提供AMP+URL+(如果存在)。|4071069|第二个将遍历内容中的每个URL，并更改为AMP+URL+(如果有效)。|4071070|最后一个将重写通过Yoast+SEO插件显示的规范URL。|4071071|entityMap^0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|O|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|P|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|Q|8|@]|9|@]|A|$]]|$1|I|3|J|5|6|7|R|8|@]|9|@]|A|$]]|$1|K|3|L|5|6|7|S|8|@]|9|@]|A|$]]|$1|M|3|-4|5|6|7|T|8|@]|9|@]|A|$]]]|N|$]]

Add these functions to your theme's 'functions.php'.

<pre><code>/* post link filter */
add_filter( 'post_link', 'change_amp_url', 10, 2 );

function change_amp_url( $url, $postobj ) {
 static $recursing = false;
 if ( $recursing ) {
 return $url;
 }

 $recursing = true;
 if ( function_exists( 'is_amp_endpoint' ) &amp;&amp; is_amp_endpoint() ) {
 if ( function_exists( 'post_supports_amp' ) &amp;&amp; post_supports_amp( $postobj ) ) {
 $url = amp_get_permalink( $postobj-&gt;ID ); 
 }
 }
 $recursing = false;
 return $url;
}

/* content link filter */
add_filter( 'the_content', 'change_amp_url_content' );

function change_amp_url_content($content)
{
 $dom = new DOMDocument();
 $dom-&gt;loadHTML($content);

 $tags = $dom-&gt;getElementsByTagName('a');
 foreach ($tags as $tag) {
 $link = $tag-&gt;getAttribute('href'); // original url
 $extralink = '';
 if(stristr($link,'#')) {
 $pagelinktemp = explode("#",$link);
 $pagelink = $pagelinktemp[0];
 $extralink = '#'.$pagelinktemp[1];
 } else {
 $pagelink = $link;
 }
 if($pagelink!="") { 
 $postid = url_to_postid($pagelink);
 $postobj = get_post($postid); // getting appropriate post object 
 if($postobj) { 
 $newlink = change_amp_url( $pagelink, $postobj ); //new url
 }
 else {
 $newlink = $link;
 }
 }
 else {
 $newlink = $link;
 }
 if($link != $newlink) // change if only links are different
 {
 $content = str_replace($link, $newlink.$extralink, $content);
 }
 }
 return $content;
}

/* override canonical link */
add_filter( 'wpseo_canonical', 'amp_override_canonical' );

function amp_override_canonical($url) {
 if ( substr($url,-4)=="/amp" ) { 
 $url = substr($url,0,-4);
 }
 return $url;
}
</code></pre>

The first function will provide the AMP URL if exists.

The second one will loop through each URL in the content and change to AMP URL if valid.

The last one will rewrite the canonical URL that displayed via Yoast SEO plugin.

blocks|key|4071184|text|我测试了Outsource+WordPress提交的代码，总体上运行良好，但'amp_override_canonical函数会覆盖删除/amp的页面的所有urls。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|4071185|我对这段代码做了一些修改，但它们不能像我期望的那样工作。“wpseo_canonical”函数似乎是在不同的上下文中调用的。|4071186|add_filter(+'wpseo_canonical',+'amp_override_canonical'+);

function+amp_override_canonical($url)+{
++++if+(+substr($url,-4)=="/amp"+)+{++++
++++++++$url+=+substr($url,0,-4);
++++}
++++return+$url;
}|code-block|syntax|javascript|4071187|entityMap^0|0|0|0^^$0|@$1|2|3|4|5|6|7|K|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|L|8|@]|9|@]|A|$]]|$1|D|3|E|5|F|7|M|8|@]|9|@]|A|$G|H]]|$1|I|3|-4|5|6|7|N|8|@]|9|@]|A|$]]]|J|$]]

I have tested the code submitted by Outsource WordPress, and in general it works fine but the 'amp_override_canonical function overwrites all the urls of the page removing the /amp.

I have made some changes to this piece of code but they do not work as I expect. It seems that the 'wpseo_canonical' function is being invoked in a different context.

<pre><code>add_filter( 'wpseo_canonical', 'amp_override_canonical' );

function amp_override_canonical($url) {
 if ( substr($url,-4)=="/amp" ) { 
 $url = substr($url,0,-4);
 }
 return $url;
}
</code></pre>

We use WordPress and would like to link amp to amp if the linked page has an amp version. We have amp structured like that: test.de/test/amp

Unfortunately this code in my functions.php isnt applying to links hard-coded inside of the post content. What do I have to change, so its working for every internal link:

<pre><code>add_filter( 'post_link', function( $url, $post ) {
 static $recursing = false;
 if ( $recursing ) {
 return $url;
 }
 $recursing = true;
 if ( ! function_exists( 'post_supports_amp' ) || ! post_supports_amp( $post ) ) {
 return $url;
 }
 if ( function_exists( 'is_amp_endpoint' ) &amp;&amp; is_amp_endpoint() ) {
 $url = amp_get_permalink( $post-&gt;ID );
 }
 $recursing = false;
 return $url;
}, 10, 2 );
</code></pre>

At the moment its also applying to the canonical link, which is really bad for seo. How to prevent this?

if is amp change internal links to amp version (WordPress)

WordPress

我们使用WordPress，并希望链接amp到amp，如果链接的页面有一个amp版本。我们有这样的amp结构: test.de/test/amp不幸的是，我的functions.php中的这段代码并不适用于post内容中硬编码的链接。我必须改变什么，这样它才能对每个内部链接起作用：add_filter( 'post_l...

问如果是amp，请将内部链接更改为amp版本(WordPress)
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