add_comment_meta( int $comment_id, string $meta_key, mixed $meta_value, bool $unique = false ): int|false

User Contributed Notes

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   Hitesh Patel 4 months ago

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   // Adding comment meta data
   $comment_id = 123;
   $meta_key = ‘user_rating’;
   $meta_value = 5;

   add_comment_meta( $comment_id, $meta_key, $meta_value );

   $comment_id: The ID of the comment you want to attach the metadata to.
   $meta_key: A unique key that identifies the type of metadata you are storing.
   $meta_value: The value associated with the metadata. In this case, a numeric rating of 5.

   This will add a custom field named user_rating with the value 5 to the comment with ID 123.
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   Codex 9 years ago

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   Basic Example

   Add a custom posted value to every new comment

   <?php
   function add_custom_comment_field( $comment_id ) {
   
      add_comment_meta( $comment_id, 'my_custom_comment_field', $_POST['my_custom_comment_field'] );
   }
   add_action( 'comment_post', 'add_custom_comment_field' );
   ?>