已解决##以下更新的代码

我已经创建了名为“esitykset”的自定义帖子类型，如果它们比帖子的“show\\u date”自定义字段中的日期旧，我想删除它们。

所以我尝试了以下代码

 add_action( \'wp\', \'expire_events_daily\' );
function expire_events_daily() {
    if ( ! wp_next_scheduled( \'delete_expired_events\' ) ) {
        wp_schedule_event( time(), \'hourly\', \'delete_expired_events\');
    }
}
add_action( \'delete_expired_events\', \'delete_expired_events_callback\' );


function delete_expired_events_callback() 
{
    $args = [
        \'post_type\'      => \'esitykset\',
        \'posts_per_page\' => -1,
        \'fields\'         => \'ids\', //only get post id\'s
        \'meta_query\'     => [
            [
               \'key\'     => \'show_date\',
               \'value\'   => current_time( \'Y/m/d\' ),
               \'compare\' => \'<\'
            ]
        ]
    ];

    $events = get_posts( $args );

    if ( $events ) {
        // Loop through the post ID\'s and delete the post
        foreach ( $events as $id )
            wp_trash_post( $id );
    }
}

为了让上面的代码正常工作，我必须添加

define(\'ALTERNATE_WP_CRON\', true);

在我的wp配置中。php文件。

现在它成功了。谢谢你的帮助。

function delete_expired_events_callback() 
{
    $args = [
        \'post_type\'      => \'esitykset\',
        \'posts_per_page\' => -1,
        \'fields\'         => \'ids\', //only get post id\'s
        \'meta_query\'     => [
            [
               \'key\'     => \'show_date\',
               \'value\'   => current_time( \'Y/m/d\' ),
               \'compare\' => \'<\'
            ]
        ]
    ];

    $events = get_posts( $args );

    if ( $events ) {
        // Loop through the post ID\'s and delete the post
        foreach ( $events as $id )
            wp_delete_post( $id );
    }
}