blocks|key|4182917|text|将值存储在变量中并没有错。如果你只需要固定链接一次，使用echo+get_permalink();或the_permalink();就可以了。然而，由于您需要在多个地方使用它，因此不将其定义为变量，而是更频繁地调用相同/相似的函数，这会增加开销。虽然在这个规模上，它不会有太大影响，但在更大的规模上，它肯定会产生影响。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|4182918|同样，您可以实际删除has_post_thumbnail()，只需检查get_the_post_thumbnail()是否返回真值。|4182919|最后一个注意事项，您确定应该将wp_reset_postdata();注释掉吗？|4182920|下面是我如何使用您提供的代码来实现这一点：|4182921|<div+class="carousel-inner">
++++<?php+while(+$query->have_posts()+)+{+$query->the_post();+$post_count%2B%2B;+?>
++++<div+class="<?=+$post_count+==+1+?+'item+active'+:+'item';+?>">
++++++++<?php
++++++++++++$permalink+=+get_permalink();

++++++++++++if(+$thumbnail+=+get_the_post_thumbnail(+null,+'slider',+array(+'class'+=>+'img-fluid'+)+)+){
++++++++++++++++echo+"<a+href='$permalink'>$thumbnail</a>";
++++++++++++}
++++++++?>
++++++++<div+class="carousel-caption">
++++++++++++<h6>
++++++++++++++++<a+class="headline-links"+href="<?=+$permalink;+?>"><?php+the_title()+?></a>
++++++++++++</h6>
++++++++++++<p><?=+excerpt(+15+);+?></p>
++++++++</div>
++++</div>
++++<?php+}+//wp_reset_postdata();+?>
</div>|code-block|syntax|javascript|4182922|但是，如果您坚持不使用变量(您不应该这样做！)然后，您可以使用以下命令：|4182923|<div+class="carousel-inner">
++++<?php+while(+$query->have_posts()+)+{+$query->the_post();+$post_count%2B%2B;+?>
++++<div+class="item+<?php+if(+$post_count+==+1+)+echo+'active';+?>">
++++++++<?php+++
++++++++++++if(+has_post_thumbnail()+){
++++++++++++++++echo+'<a+href="'.+get_permalink()+.'">';
++++++++++++++++++++the_post_thumbnail(+'slider',+array(+'class'+=>+'img-fluid'+)+);+
++++++++++++++++echo+'</a>';
++++++++++++}
++++++++?>
++++++++<div+class="carousel-caption">
++++++++++++<h6>
++++++++++++++++<a+class="headline-links"+href="<?php+the_permalink();+?>"><?php+the_title()+?></a>
++++++++++++</h6>
++++++++++++<p><?php+echo+excerpt(+15+);+?></p>
++++++++</div>
++++</div>
++++<?php+}+//wp_reset_postdata();+?>
</div>|4182924|entityMap|0|LINK|mutability|MUTABLE|url|https://developer.wordpress.org/reference/functions/get_permalink/|1|https://developer.wordpress.org/reference/functions/the_permalink/|2|https://developer.wordpress.org/reference/functions/has_post_thumbnail/|3|https://developer.wordpress.org/reference/functions/get_the_post_thumbnail/|4|https://codex.wordpress.org/Function_Reference/wp_reset_postdata^0|S|L|1E|G|S|L|0|1E|G|1|0|A|K|Z|O|A|K|2|Z|O|3|0|F|K|F|K|4|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|1A|8|@$9|1B|A|1C|B|C]|$9|1D|A|1E|B|C]]|D|@$9|1F|A|1G|1|1H]|$9|1I|A|1J|1|1K]]|E|$]]|$1|F|3|G|5|6|7|1L|8|@$9|1M|A|1N|B|C]|$9|1O|A|1P|B|C]]|D|@$9|1Q|A|1R|1|1S]|$9|1T|A|1U|1|1V]]|E|$]]|$1|H|3|I|5|6|7|1W|8|@$9|1X|A|1Y|B|C]]|D|@$9|1Z|A|20|1|21]]|E|$]]|$1|J|3|K|5|6|7|22|8|@]|D|@]|E|$]]|$1|L|3|M|5|N|7|23|8|@]|D|@]|E|$O|P]]|$1|Q|3|R|5|6|7|24|8|@]|D|@]|E|$]]|$1|S|3|T|5|N|7|25|8|@]|D|@]|E|$O|P]]|$1|U|3|-4|5|6|7|26|8|@]|D|@]|E|$]]]|V|$W|$5|X|Y|Z|E|$10|11]]|12|$5|X|Y|Z|E|$10|13]]|14|$5|X|Y|Z|E|$10|15]]|16|$5|X|Y|Z|E|$10|17]]|18|$5|X|Y|Z|E|$10|19]]]]

<p>There's nothing wrong with storing values in variables. If you only need the permalink once, using <a href="https://developer.wordpress.org/reference/functions/get_permalink/" rel="nofollow noreferrer"><code>echo get_permalink();</code></a> or <a href="https://developer.wordpress.org/reference/functions/the_permalink/" rel="nofollow noreferrer"><code>the_permalink();</code></a> would be just fine. However, since you need it in more than one place, you're increasing overhead by not defining it as a variable and instead calling the same/similar functions more often than necessary. While on this scale it won't matter much, on a larger scale it can definitely make an impact.</p>

<p>In that same vein, you can actually remove the <a href="https://developer.wordpress.org/reference/functions/has_post_thumbnail/" rel="nofollow noreferrer"><code>has_post_thumbnail()</code></a> and just check to see if <a href="https://developer.wordpress.org/reference/functions/get_the_post_thumbnail/" rel="nofollow noreferrer"><code>get_the_post_thumbnail()</code></a> returns a truthy value.</p>

<p>One last note, are you sure the <a href="https://codex.wordpress.org/Function_Reference/wp_reset_postdata" rel="nofollow noreferrer"><code>wp_reset_postdata();</code></a> should be commented out?</p>

<p>Here's how I would approach this with the code you've provided:</p>

<pre><code>&lt;div class="carousel-inner"&gt;
    &lt;?php while( $query-&gt;have_posts() ) { $query-&gt;the_post(); $post_count++; ?&gt;
    &lt;div class="&lt;?= $post_count == 1 ? 'item active' : 'item'; ?&gt;"&gt;
        &lt;?php
            $permalink = get_permalink();

            if( $thumbnail = get_the_post_thumbnail( null, 'slider', array( 'class' =&gt; 'img-fluid' ) ) ){
                echo "&lt;a href='$permalink'&gt;$thumbnail&lt;/a&gt;";
            }
        ?&gt;
        &lt;div class="carousel-caption"&gt;
            &lt;h6&gt;
                &lt;a class="headline-links" href="&lt;?= $permalink; ?&gt;"&gt;&lt;?php the_title() ?&gt;&lt;/a&gt;
            &lt;/h6&gt;
            &lt;p&gt;&lt;?= excerpt( 15 ); ?&gt;&lt;/p&gt;
        &lt;/div&gt;
    &lt;/div&gt;
    &lt;?php } //wp_reset_postdata(); ?&gt;
&lt;/div&gt;
</code></pre>

<p>However, if you're adamant about not using a variable (which you shouldn't be!) then you can use this:</p>

<pre><code>&lt;div class="carousel-inner"&gt;
    &lt;?php while( $query-&gt;have_posts() ) { $query-&gt;the_post(); $post_count++; ?&gt;
    &lt;div class="item &lt;?php if( $post_count == 1 ) echo 'active'; ?&gt;"&gt;
        &lt;?php   
            if( has_post_thumbnail() ){
                echo '&lt;a href="'. get_permalink() .'"&gt;';
                    the_post_thumbnail( 'slider', array( 'class' =&gt; 'img-fluid' ) ); 
                echo '&lt;/a&gt;';
            }
        ?&gt;
        &lt;div class="carousel-caption"&gt;
            &lt;h6&gt;
                &lt;a class="headline-links" href="&lt;?php the_permalink(); ?&gt;"&gt;&lt;?php the_title() ?&gt;&lt;/a&gt;
            &lt;/h6&gt;
            &lt;p&gt;&lt;?php echo excerpt( 15 ); ?&gt;&lt;/p&gt;
        &lt;/div&gt;
    &lt;/div&gt;
    &lt;?php } //wp_reset_postdata(); ?&gt;
&lt;/div&gt;
</code></pre>


<p>I'm trying to hyperlink the WordPress blog post thumbnail image to link to its individual blog post (permalink). The text link in the code below does it, but the image part is inside an if/else statement.</p>

<p>Code:</p>

<pre><code>&lt;div class="carousel-inner"&gt;
        &lt;?php while( $query-&gt;have_posts() ) { $query-&gt;the_post(); $post_count++; ?&gt;

            &lt;div class="item &lt;?php if( $post_count == 1 ) echo 'active'; ?&gt;"&gt;

                        &lt;?php 
                            if ( has_post_thumbnail() ) { 
                    //Permalink needed below
                     the_post_thumbnail( 'slider', array( 'class' =&gt; 'img-fluid' ) ); 
                                    }
                                ?&gt;
                                &lt;div class="carousel-caption"&gt;
   &lt;h6&gt;&lt;a class="headline-links" href="&lt;?php echo get_permalink(); ?&gt;"&gt;&lt;?php the_title() ?&gt;&lt;/a&gt;&lt;/h6&gt;
                                    &lt;p&gt;&lt;?php echo excerpt( 15 ); ?&gt;&lt;/p&gt;
                                &lt;/div&gt;
                            &lt;/div&gt;
                        &lt;?php } //wp_reset_postdata(); ?&gt;
                        &lt;/div&gt;
</code></pre>


Permalink post thumbnail PHP inside If/Else statement for WordPress Page template?

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我正在尝试超链接WordPress博客帖子的缩略图，以链接到其单独的博客帖子(固定链接)。下面代码中的文本链接可以做到这一点，但图像部分在if/else语句中。代码：<div class="carousel-inner">        <?php while( $query->have_posts() ) { $qu...

问用于WordPress页面模板的If/Else语句中的永久链接post缩略图？
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