我应该使用什么Add_action引用，还是应该使用do_action？

我正在处理一些自动电子邮件。我对add\\u action和do\\u action相当陌生。我很难理解它。该网站设定了许多目标，人们可以随着时间的推移达到这些目标。我想在他们进球时给他们发一封电子邮件。下面的代码将在帖子更新时发送该电子邮件，但这不起作用。我把它放在那里只是为了确保邮件发出。我不知道应该使用什么add\\u操作。要做到这一点，我应该寻找什么样的参考资料？

function emailNotificationSuccess($post_id) {

  if( ( $_POST[\'post_status\'] == \'publish\' ) && ( $goalsupport === $totalsupport ) ) {

   $post = get_post($post_id);
   $author = get_userdata($post->post_author);
   $totalsupport = countSupportForAll($post->ID);
   $goalsupport = get_post_meta( $post->ID, \'sj_campaign_goal\', true );
   $supporter_email = get_post_meta( $post_id, \'sj_campaign_email\', true );
   $message = "Hi ".$author->display_name.",


Congrats! You have reached your goal!

Your , ".$post->post_title." is a success!

".get_permalink( $post_id )."


   ";
   wp_mail($supporter_email, "You just reached your goal!", $message);

  } 
} 
add_action(\'post_updated\', \'emailNotificationSuccess\');

function emailNotificationSuccess($post_id) { if( get_post_status( $post_id ) == \'publish\' ) { $post = get_post($post_id); $author = get_userdata($post->post_author); $totalsupport = countSupportForAll($post->ID); $goalsupport = get_post_meta( $post->ID, \'sj_campaign_goal\', true ); $supporter_email = get_post_meta( $post_id, \'sj_campaign_email\', true ); $message = "Hi ".$author->display_name.", Congrats! You have reached your goal! Your , ".$post->post_title." is a success! ".get_permalink( $post_id )." "; wp_mail($supporter_email, "You just reached your goal!", $message); } } add_action(\'post_updated\', \'emailNotificationSuccess\');

Child theme functions.php

我不知道如何改变我的孩子主题的功能。php。在woothemes文档中，它说“子主题中的functions.php应该是空的，并且不包括父主题functions.php中的任何内容。”我需要使用此功能来不显示产品类别，但我不确定如何在我的子主题中执行此操作。也许有人能给我提供一些指示？add_action( \'pre_get_posts\', \'custom_pre_get_posts_query\' ); function custom_pre_get_posts_query( $

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Child theme functions.php