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I am trying to override wp_insert_comment() (wp-includes/comment.php). I added the following lines of code in my functions.php file, located in my theme :

add_filter('wp_insert_comment', 'my_insert_comment');
function my_insert_comment($commentdata)
     /* Some stuff */

Here is a line found in the original wp_insert_comment() function :

function wp_insert_comment($commentdata)
    /* Some stuff */
    do_action('wp_insert_comment', $id, $comment);
    return $id;

After many tests, I have the feeling that the real wp_insert_comment() is executed, and when it comes to the do_action() line, my filter is taken into consideration and my my_insert_comment() function is finally executed.

Of course, my purpose is to replace the original function by my own one. my_insert_comment() is working fine if I write it directly in the comments.php file, but I would like to keep it update-proof.

Am I doing something wrong ?

share|improve this question
Why do you want to override it? – Eugene Manuilov May 18 '12 at 7:27
To make some changes in the DB when a user posts a comment. That's related to specifics features I'm developing. – Pierre Espenan May 18 '12 at 8:18
your hook for wp_insert_comment action is the best place to do it. – Eugene Manuilov May 18 '12 at 8:29
up vote 0 down vote accepted

You can't override it, because this function is not pluggable and is a part of WP core. All what you can do is to add your hook for action wp_insert_comment, as you've actually done.

share|improve this answer
Is there any list or something of Wordpress pluggable functions ? – Pierre Espenan May 18 '12 at 8:19
wp-includes/pluggable.php – Eugene Manuilov May 18 '12 at 8:27
Thanks. That's a pity I can't override that function... Will have to re-implement my code for each Wordpress update :/ – Pierre Espenan May 18 '12 at 8:46

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