do_action( ‘comment_post’, int $comment_id, int|string $comment_approved, array $commentdata )

User Contributed Notes

1. Skip to note 4 content

   Stephen Cronin 10 years ago

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   The following example uses the comment_post hook to run a function immediately after a comment is posted. The function checks whether the comment is approved and, if so, executes the code specified.

   function show_message_function( $comment_ID, $comment_approved ) {
   	if( 1 === $comment_approved ){
   		//function logic goes here
   	}
   }
   add_action( 'comment_post', 'show_message_function', 10, 2 );

   Note that the add_action line includes the priority and the number of parameters (, 10, 2). If we leave the number of parameters out, we will only be able to access to the first parameter ($comment_ID) in our function. We will not be able to access the second parameter ($comment_approved).
2. Skip to note 5 content

   Andrew Wilder 4 years ago

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   $comment_approved can also be ‘trash’ if the new comment is trashed automatically based on Settings > Discussion > Disallowed Comment Keys.
3. Skip to note 6 content

   Chigozie Orunta 4 years ago

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   Get notified via email when a user posts a comment on your site’s blog.

   function wpdocs_notify_my_mail( $comment_id, $comment_approved ) {
   	if ( ! $comment_approved ) {
   		$comment = get_comment( $comment_id );
   		$mail = 'test@example.org';
   		$subject = sprintf( 'New Comment by: %s', $comment->comment_author );
   		$message = $comment->comment_content;
   
   		wp_mail( $mail, $subject, $message );
   	}
   }
   add_action( 'comment_post', 'wpdocs_notify_my_mail', 10, 2 );