可能需要一些帮助。。。使用此代码从特定类别调用自定义数量的帖子，并且只想显示前15个字符。然而，它在每篇文章上显示相同的摘录，而不是在每篇文章上显示唯一的摘录。有人能帮我解决这个问题吗？
下面的代码导致相同的摘录被添加到帖子中，即使显示了正确的标题和缩略图！
我是个新手，如果你能解释一下，我将非常感谢！
<?php $posts = get_posts(\'category=3&orderby=date&numberposts=3\'); foreach($posts as $post) { ?>
<a href="<?php the_permalink() ?>" target="_parent">
<div class="aligncenter" style="display: block;">
<?php the_post_thumbnail( \'thumbnail\', array( \'class\' => \'img-responsive\' ) ); ?>
</div>
<h3><?php the_title(); ?></h3></a>
<?php while (have_posts()) : the_post(); ?>
<?php echo excerpt(15); ?>
<?php endwhile; ?>
<a href="<?php the_permalink() ?>" class="blue"" target="_parent">
Read More</a>
</div>
<?php } ?>
这是我的功能。php
function excerpt($limit) {
$excerpt = explode(\' \', get_the_excerpt(), $limit);
if (count($excerpt)>=$limit) {
array_pop($excerpt);
$excerpt = implode(" ",$excerpt).\'...\';
} else {
$excerpt = implode(" ",$excerpt);
}
$excerpt = preg_replace(\'`\\[[^\\]]*\\]`\',\'\',$excerpt);
return $excerpt;
}
function content($limit) {
$content = explode(\' \', get_the_content(), $limit);
if (count($content)>=$limit) {
array_pop($content);
$content = implode(" ",$content).\'...\';
} else {
$content = implode(" ",$content);
}
$content = preg_replace(\'/\\[.+\\]/\',\'\', $content);
$content = apply_filters(\'the_content\', $content);
$content = str_replace(\']]>\', \']]>\', $content);
return $content;
最合适的回答,由SO网友:Luis Sanz 整理而成
如果您只是尝试在主题的特定部分中回显摘录，那么只需在循环中使用以下代码即可：
<?php
$excerpt = get_the_excerpt();
echo substr( $excerpt, 0, 15 ) . \'…\';
?>
如果要全局筛选摘录（在存档、博客页面等中）以匹配一个或多个给定类别的任何帖子部分，可以在主题的
functions.php 文件：
<?php
function wpse_225203_category_based_trim_excerpt( $excerpt ) {
//Return if there is not a except to work with
if ( \'\' === $excerpt ) :
return $excerpt;
endif;
//Get the post\'s categories
$categories = get_the_category();
//Get the post\'s categories ID
$categories_id = wp_list_pluck( $categories, \'term_id\' );
//Set the post\'s categories ID we want to match
$categories_to_trim_ids = array( 1, 3 ); //Modify to match your ids
//Match the wanted categories ids and the post\'s categories ids
if ( ! array_intersect( $categories_to_trim_ids, $categories_id ) ) :
return $excerpt;
endif;
//$excerpt = wp_trim_words( $excerpt, 15 ); //Trim the excerpt to the first 15 words
$excerpt = substr( $excerpt, 0, 15 ) . \'…\'; //Trim the excerpt to the first 15 characters
return $excerpt;
}
add_filter( \'get_the_excerpt\', \'wpse_225203_category_based_trim_excerpt\' );
?>
SO网友:Owais Alam
在函数中输入以下代码。php
function excerpt($limit) {
$excerpt = explode(\' \', get_the_excerpt(), $limit);
if (count($excerpt)>=$limit) {
array_pop($excerpt);
$excerpt = implode(" ",$excerpt).\'...\';
} else {
$excerpt = implode(" ",$excerpt);
}
$excerpt = preg_replace(\'`\\[[^\\]]*\\]`\',\'\',$excerpt);
return $excerpt;
}
function content($limit) {
$content = explode(\' \', get_the_content(), $limit);
if (count($content)>=$limit) {
array_pop($content);
$content = implode(" ",$content).\'...\';
} else {
$content = implode(" ",$content);
}
$content = preg_replace(\'/\\[.+\\]/\',\'\', $content);
$content = apply_filters(\'the_content\', $content);
$content = str_replace(\']]>\', \']]>\', $content);
return $content;
}
然后在模板代码中使用。。
<?php echo excerpt(25); ?>
或者在你的模板上试试这个
<?php
$excerpt = get_the_excerpt();
echo substr( $excerpt, 0, 25);
?>
