Php 如果没有post或少于3，则向查询中添加其他标记名

我需要在wordpress上的产品页面中创建一个显示

post

的部分。此帖子列表将根据

标签名

显示所有帖子，并遵循

优先级顺序

我的每种产品都有3个标签，分别是：

$variant

$model

$brand

所有得到$variant标签的帖子都应该首先显示

If no post ( with 'tag' => $variant ) OR the total of post < 6

Then get the rest of the post ( with 'tag' => $model )

If no post ( with 'tag' => $model ) OR the total of post < 6

Then get the rest of the post ( with 'tag' => $brand )

知道这是否可行吗？

试试这个：

$original_query = $wp_query;
$wp_query = null;

$args = array(
    'posts_per_page' => 6,
    'tag' => $variant
);
$wp_query = new WP_Query( $args );

// Let's check how many posts with the variant tag we find
$count = 0;

// Posts by variant have been found, display them
if ( have_posts() ) {
    while( have_posts() ) { the_post();
        $count++;
        get_template_part( 'template-parts/molecule/card', 'vertical' );
    }
}

// We don't have 6 posts yet, let's get more posts by model and/or brand
if ( $count < 6 ) {

    $args = array(
        'posts_per_page' => 6 - $count,
        'tag' => $model
    );
    $wp_query = new WP_Query( $args );

    // Posts by model have been found, display them
    if ( have_posts() ) {
        while( have_posts() ) { the_post();
            $count++;
            get_template_part( 'template-parts/molecule/card', 'vertical' );
        }
    }

    // We still don't have 6 posts, let's add some more posts by brand
    if ( $count < 6 ) {

        $args = array(
            'posts_per_page' => 6 - $count,
            'tag' => $brand
        );
        $wp_query = new WP_Query( $args );

        // Posts by model have been found, display them
        if ( have_posts() ) {
            while( have_posts() ) { the_post();
                $count++;
                get_template_part( 'template-parts/molecule/card', 'vertical' );
            }
        }

    }

}

$wp_query = null;
$wp_query = $original_query;

wp_reset_postdata();

---

这是可能的，但您需要向我们展示一些代码，以便我们能够提供帮助。“到目前为止，你得到了什么？@cabrerahector是的。我不知道这是否有帮助，因为我回到了我的第一个代码，但它在这里。这里有几个问题：首先，

标记

参数需要是数组，而不是字符串。您不需要将

$wp\u query

设置为

null

只需使用

wp\u reset\u query（）

。不要使用

$wp\u query

作为变量，使用类似

$card\u query=newwp\u query（$args）

；

tag

参数还接受以逗号分隔的标记段塞字符串，例如。检查，在几个标签下面的显示帖子。@cabrerahector好的，我会的！谢谢分享！

$original_query = $wp_query;
$wp_query = null;

$args = array(
    'posts_per_page' => 6,
    'tag' => $variant
);
$wp_query = new WP_Query( $args );

// Let's check how many posts with the variant tag we find
$count = 0;

// Posts by variant have been found, display them
if ( have_posts() ) {
    while( have_posts() ) { the_post();
        $count++;
        get_template_part( 'template-parts/molecule/card', 'vertical' );
    }
}

// We don't have 6 posts yet, let's get more posts by model and/or brand
if ( $count < 6 ) {

    $args = array(
        'posts_per_page' => 6 - $count,
        'tag' => $model
    );
    $wp_query = new WP_Query( $args );

    // Posts by model have been found, display them
    if ( have_posts() ) {
        while( have_posts() ) { the_post();
            $count++;
            get_template_part( 'template-parts/molecule/card', 'vertical' );
        }
    }

    // We still don't have 6 posts, let's add some more posts by brand
    if ( $count < 6 ) {

        $args = array(
            'posts_per_page' => 6 - $count,
            'tag' => $brand
        );
        $wp_query = new WP_Query( $args );

        // Posts by model have been found, display them
        if ( have_posts() ) {
            while( have_posts() ) { the_post();
                $count++;
                get_template_part( 'template-parts/molecule/card', 'vertical' );
            }
        }

    }

}

$wp_query = null;
$wp_query = $original_query;

wp_reset_postdata();

$posts_per_page = 6;
$count = 0;

$args = array(
    'posts_per_page' => $posts_per_page,
    'tag' => $variant
);
$posts_by_variant = new WP_Query( $args );

if ( $posts_by_variant->have_posts() ) {
    while( $posts_by_variant->have_posts() ) { $posts_by_variant->the_post();
        $count++;
        get_template_part( 'template-parts/molecule/card', 'vertical' );
    }
}

// We don't have 6 posts, let's get more posts by model and/or brand
if ( $count < $posts_per_page ) {

    $args = array(
        'posts_per_page' => $posts_per_page - $count,
        'tag' => $model
    );
    $posts_by_model = new WP_Query( $args );

    // Posts by model have been found, display them
    if ( $posts_by_model->have_posts() ) {
        while( $posts_by_model->have_posts() ) { $posts_by_model->the_post();
            $count++;
            get_template_part( 'template-parts/molecule/card', 'vertical' );
        }
    }

    // We still don't have 6 posts, let's add some more posts by brand
    if ( $count < $posts_per_page ) {

        $args = array(
            'posts_per_page' => $posts_per_page - $count,
            'tag' => $brand
        );
        $posts_by_brand = new WP_Query( $args );

        // Posts by model have been found, display them
        if ( $posts_by_brand->have_posts() ) {
            while( $posts_by_brand->have_posts() ) { $posts_by_brand->the_post();
                $count++;
                get_template_part( 'template-parts/molecule/card', 'vertical' );
            }
        }

    }

}

// Reset original post object
wp_reset_postdata();