每周运行一次wordpress查询 [英] Run a wordpress query every week

问题描述

早上好。作为标题说，我试图找到一个方法，每周运行一个wordpress查询更新一个部分在我的网站的建议的一周的帖子。

查看我发现了 wp_cron 功能，它看起来像我正在寻找的东西，因为我不能在服务器上设置一个cron作业。
问题是，我不能使它的工作。
我在 functions.php 中创建了这个try函数

  add_action 'cron_hook'，'cron_exec'）; 
 
 if（！wp_next_scheduled（'cron_hook'））{
 wp_schedule_event（time（），'daily'，'cron_hook'）; 
} 
 
函数cron_exec（）{
 echo time（）; 
} 
  

我使用以下代码调用我的帖子页面中的操作： p>

  do_action（'cron_hook'）; 
  

这是我第一次尝试wp_cron所以也许我错过了一些东西，但我期待得到同样的 time（）每次刷新页面，因为函数应该每天触发一次，但是我最后在每次刷新时都有当前的时间戳。

我想知道如果我正确使用wp_cron函数，如果这是正确的事情，或者有bettere方法来实现这个结果。

每周执行cron，你需要这样的东西：

  function custom_time_cron（$ schedule）{
 
 $ schedules ['every_week'] = array 
'interval'=> 604800，// 604800 seconds in 1 weeks 
'display'=> esc_html __（'Every Week'，'textdomain'）
）; 
 
 return $ schedule; 
} 
 add_filter（'cron_schedules'，'custom_time_cron'）; 
 
 add_action（'my_cron_hook'，'my_cron_function'）; 
 
 if（！function_exists（'mytheme_my_activation'））{
 function mytheme_my_activation（）{
 if（！wp_next_scheduled（'my_cron_hook'））{
 wp_schedule_event （），'every_week'，'my_cron_hook'）; 
} 
} 
} 
 
 add_action（'wp'，'mytheme_my_activation'）; 
 
 if（！function_exists（'my_cron_function'））{
 function my_cron_function（）{
 echo time（）; 
} 
} 
  

第一个函数创建一个新计划 - 有 houly ，每日和 twicedaily 作为 reccurance 。

然后设置您的调度程序。您检查是否有！wp_next_scheduled 的计划活动，如果不是，您安排活动

  wp_schedule_event（time（），'every_week'，'my_cron_hook'）; 
  

如果您已经初始化了一个具有特定名称的cron，需要 wp_clear_scheduled_hook 。

希望此help：）

Good morning everyone. As the title say I'm trying to find a way to run a wordpress query every week to update a section in my site with the suggested posts of the week.

Looking around I've found the wp_cron feature, and it seems like the thing I'm looking for since I can't set up a cron job on the server. The problem is that I wasn't able to make it work. I've created this try-function in my functions.php

add_action( 'cron_hook', 'cron_exec' );

if( !wp_next_scheduled( 'cron_hook' ) ) {
   wp_schedule_event( time(), 'daily', 'cron_hook' );
}

function cron_exec() {
  echo time();
}

And i call the action in my post page with the following code:

do_action('cron_hook');

This is my first attempt at wp_cron so maybe I missed something but I was expecting to get the same time() everytime I refresh the page since the function should be fired once a day, but I ended up having the current timestamp on every refresh.

I'd like to know if I'm using correctly the wp_cron function and if it's the right thing to use in this case or there are bettere methods to achieve this result.

Thank you for the help and have a nice day.

解决方案

To execute cron every week you'll need something like this:

function custom_time_cron( $schedules ) {

    $schedules['every_week'] = array(
            'interval'  => 604800, //604800 seconds in 1 week
            'display'   => esc_html__( 'Every Week', 'textdomain' )
    );

    return $schedules;
}
add_filter( 'cron_schedules', 'custom_time_cron' );

add_action( 'my_cron_hook', 'my_cron_function' );

if (!function_exists('mytheme_my_activation')) {
    function mytheme_my_activation() {
        if (!wp_next_scheduled('my_cron_hook')) {
            wp_schedule_event( time(), 'every_week', 'my_cron_hook' );
        }
    }
}

add_action('wp', 'mytheme_my_activation');

if (!function_exists('my_cron_function')) {
    function my_cron_function() {
        echo time();
    }
}

The first function creates a new schedule - because you only have houly, daily and twicedaily as a reccurance.

Then you set up your scheduler. You check if there is a scheduled event with !wp_next_scheduled, and if it's not, you schedule the event

wp_schedule_event( time(), 'every_week', 'my_cron_hook' );

If you've already initialized a cron with a certain name, for it to get rescheduled you'll need to wp_clear_scheduled_hook.

Hope this helps :)

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