我需要以下功能。每当更新或保存自定义帖子类型时，我都需要覆盖某些自定义帖子元。

我需要确保这只会影响“VA\\u LISTING\\u PTYPE”类型的帖子以及具有“meta\\u key”=>“featured cat”和“meta\\u value”=>1的帖子

我目前使用的代码如下（不起作用）

//Remove urls from free listings
function remove_url_free_post( $post_id ) {

$slug = \'VA_LISTING_PTYPE\',
    if ( $slug != $_POST[\'post_type\'] ) {
    return;
    }

    $meta_values = get_post_meta( $post_id, \'featured-cat\', true );
if ( $meta_values != 1 ) {
    return;
    }

    update_post_meta($post_id, \'website\', \'\');
    update_post_meta($post_id, \'twitter\', \'\');
    update_post_meta($post_id, \'facebook\', \'\');

}
add_action(\'save_post\', \'remove_url_free_post\');

我还尝试了不同的操作挂钩，如来自此的pre\\u post\\u updateanswer

我就是不能让它工作。目前唯一对我有效的丑陋修复方法是：

//Remove urls from free listings
function remove_url_free_post() {
    //Fetches all the listings that have featured cat which equals free listing for us
    $r = new WP_Query( 
    array( 
        \'post_type\' => VA_LISTING_PTYPE,
        \'no_found_rows\' => true,
        \'meta_key\' => \'featured-cat\',
        \'meta_value\' => 1
    ) );
    if ( $r->have_posts() ) :
    while ( $r->have_posts() ) : $r->the_post();

    //removes the website, twitter and facebook
    $post_id3 = get_the_ID();
    update_post_meta($post_id3, \'website\', \'\');
    update_post_meta($post_id3, \'twitter\', \'\');
    update_post_meta($post_id3, \'facebook\', \'\');

    endwhile;
    endif;
}
//Not ideal at all as called everytime, save_post not working as intended
add_action(\'wp_footer\', \'remove_url_free_post\');

<?php

add_action(\'save_post\', \'some_function\');

function some_function($post_id)
{
        if(get_post_type($post_id) != "VA_LISTING_PTYPE")
        return;
    $meta_value = get_post_meta( $post_id, \'featured-cat\', true );
    if($meta_value != 1)
        return;
    update_post_meta($post_id, \'website\', \'\');
    update_post_meta($post_id, \'twitter\', \'\');
    update_post_meta($post_id, \'facebook\', \'\');
}

add_action(\'save_post_VA_LISTING_PTYPE\', \'some_function\');

function some_function($post_id)
{
    $meta_value = get_post_meta( $post_id, \'featured-cat\', true );
    if($meta_value != 1)
        return;
    update_post_meta($post_id, \'website\', \'\');
    update_post_meta($post_id, \'twitter\', \'\');
    update_post_meta($post_id, \'facebook\', \'\');
}