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如何为一个职类所有员额获得特定习俗领域的所有元值?
原标题:How to get all metavalue for a specific custom field for all posts in one category?

我试图为一个习俗领域的所有美分价值提取资金。 我现在拿到整个场址的元值。 我想,这仅限于你所重复的类别。

该法典现在看着这一点:

            <?php
            $thevariable = $wpdb->get_var($wpdb->prepare("
            SELECT SU毛里求斯($wpdb->postmeta.meta_value)
            FRO毛里求斯 $wpdb->postmeta, $wpdb->posts
            WHERE $wpdb->postmeta.meta_key= mycustomfield 
            AND $wpdb->postmeta.post_id=$wpdb->posts.id
            "));
            echo  <h1>  . $thevariable .  </h1> ;
            ?>

有些人能够帮助我排除一个类别?

be!

毛里求斯

最佳回答

在你的WP档案中,你可以补充这一内容;我猜测。 它将做你们所期待的事情。

 <?php

    $MySum = 0;

    $args = array(
 category_name  =>  MyCategory ,
     meta_key  =>  mycustomfield ,
     posts_per_page  =>  -1  );

    // The Query
    $the_query = new WP_Query( $args);

    // The Loop
    while ( $the_query->have_posts() ) : $the_query->the_post();
        $MySum += get_post_meta($post_id, $key, true);
    endwhile;

    echo  <h1>  . $MySum .  </h1> ;
    // Reset Post Data
    wp_reset_postdata();


    ?>
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