我已经创建了一个php while语句,它在特定的布局中显示来自wordpress的8篇文章。现在我想继续运行这个循环,直到所有的帖子都显示出来。所以我所做的是创建一个名为posts_displayed的变量,我用它来设置post_offset,并在每次显示post时递增它。原始代码按预期工作,但当我在其周围添加额外的while语句时,不会显示任何帖子。
我已经更新了代码,这样就有一个主查询和循环,其中有四个不同的查询和循环。我现在遇到的问题是在第131行,在那里我得到了一个意外的endwhile错误。
<?php $posts_displayed = 0; ?>
<?php
$main_query = new WP_Query( array(
'category_name' => 'Travel',
));
?>
<?php if ( $main_query->have_posts() ) : ?>
<?php while ( $posts_displayed < ($main_query->post_count) ) ?>
<?php
$first_query = new WP_Query( array(
'category_name' => 'Travel',
'posts_per_page' => 2,
'offset' => $posts_displayed,
));
?>
<div class="row row__padding--bottom homepage__row--one">
<?php if ( $first_query->have_posts() ) : ?>
<?php while ( $first_query->have_posts() ) : $first_query->the_post(); ?>
<div class="col-sm-12 col-md-6">
<div class="journal__latest" style="background: url(<?php echo get_the_post_thumbnail_url( $post_id, 'large' ); ?>) !important; background-size: cover !important; background-position: center center !important; background-repeat: no-repeat !important;">
</div>
<div class="post__info--container">
<a href="<?php echo esc_url( get_permalink()); ?>"><h4><?php the_title(); ?></h4></a>
</div>
</div>
<?php endwhile; ?>
<?php wp_reset_postdata(); ?>
<?php endif; ?>
</div>
<?php
$second_query = new WP_Query( array(
'category_name' => 'Travel',
'posts_per_page' => 3,
'offset' => posts_displayed,
));
?>
<div class="row row__padding--bottom">
<?php if ( $second_query->have_posts() ) : ?>
<?php while ( $second_query->have_posts() ) : $second_query->the_post(); ?>
<div class="col-12 col-md-4">
<div class="portfolio__featured" style="background: url(<?php echo get_the_post_thumbnail_url( $post_id, 'large' ); ?>) !important; !important; background-size: cover !important; background-position: center center !important; background-repeat: no-repeat !important;">
</div>
<div class="post__info--container">
<a href="<?php echo esc_url( get_permalink()); ?>"><h4><?php the_title(); ?></h4></a>
</div>
</div>
<?php endwhile; ?>
<?php wp_reset_postdata(); ?>
<?php endif; ?>
</div>
<?php
// the query
$third_query = new WP_Query( array(
'category_name' => 'Travel',
'posts_per_page' => 1,
'offset' => posts_displayed,
));
?>
<div class="row row__padding--bottom">
<?php if ( $third_query->have_posts() ) : ?>
<?php while ( $third_query->have_posts() ) : $third_query->the_post(); ?>
<div class="col-12">
<div class="journal__featured" style="background: url(<?php echo get_the_post_thumbnail_url( $post_id, 'large' ); ?>) !important; !important; background-size: cover !important; background-position: center center !important; background-repeat: no-repeat !important;">
</div>
<div class="post__info--container">
<a href="<?php echo esc_url( get_permalink()); ?>"><h4><?php the_title(); ?></h4></a>
</div>
</div>
<?php endwhile; ?>
<?php wp_reset_postdata(); ?>
<?php endif; ?>
</div>
<?php
// the query
$fourth_query = new WP_Query( array(
'category_name' => 'Travel',
'posts_per_page' => 2,
'offset' => posts_displayed,
));
?>
<div class="row row__padding--bottom">
<?php if ( $fourth_query->have_posts() ) : ?>
<?php while ( $fourth_query->have_posts() ) : $fourth_query->the_post(); ?>
<div class="col-sm-12 col-md-6">
<div class="journal__featured" style="background: url(<?php echo get_the_post_thumbnail_url( $post_id, 'large' ); ?>) !important; !important; background-size: cover !important; background-position: center center !important; background-repeat: no-repeat !important;">
</div>
<div class="post__info--container">
<a href="<?php echo esc_url( get_permalink()); ?>"><h4><?php the_title(); ?></h4></a>
</div>
</div>
<?php endwhile; ?>
<?php wp_reset_postdata(); ?>
<?php endif; ?>
</div>
<?php endwhile; ?>
<?php else : ?>
<p><?php __('No News'); ?></p>
<?php endif; ?>
最佳答案
我发现你的代码有一些问题。首先在你的第一个if
if ( $the_query->have_posts() )
$查询仍然未定义,因此它没有post,您将$查询定义为wp_query类的一个实例,下面有几行代码。
其次,有条件地调用
wp_reset_postdata()
,这意味着如果查询没有posts post数据,则不会重置。当然,你查询数据库的次数太多了,我不明白你为什么需要它。
我做了一些快速修正(注意下面的代码没有经过测试,我只是应用了我能想到的快速解决方案)
<?php
$the_query = new WP_Query(
array(
'category_name' => 'Travel',
'posts_per_page' => 64,
)
);
?>
<div class="row row__padding--bottom">
<?php
if ( $the_query->have_posts() ) :
$i = 0;
$class_map = [
0 => 'col-md-6',
1 => 'col-md-6',
6 => 'col-md-6',
7 => 'col-md-6',
2 => 'col-md-4',
3 => 'col-md-4',
4 => 'col-md-4',
5 => 'col-md-12',
];
while ( $the_query->have_posts() ) :
$the_query->the_post();
?>
<div class="col-sm-12 <?php echo esc_attr( $class_map[ $i % 8 ] ); ?>">
<div class="journal__featured" style="background: url(<?php the_post_thumbnail_url( 'large' ); ?>) !important; !important; background-size: cover !important; background-position: center center !important; background-repeat: no-repeat !important;">
</div>
<div class="post__info--container">
<a href="<?php the_permalink(); ?>"><h4><?php the_title(); ?></h4></a>
</div>
</div>
<?php
if ( 1 === ($i % 8) || 4 === ($i % 8) || 5 === ($i % 8) ) {
echo '</div><div class="row row__padding--bottom">';
}
$i++;
endwhile;
else :
echo '<p>' . esc_html( __( 'No News' ) ) . '</p>';
endif;
wp_reset_postdata();
?>
</div>
<?php
希望对你有用!
干杯!
关于php - 如何在PHP中循环显示while语句的while语句?,我们在Stack Overflow上找到一个类似的问题:https://stackoverflow.com/questions/57628997/