Error when attaching note to post with Peters' Post Notes

I had the same problem and found the following solution. In wp-content/plugins/peters-post-notes/peters-post-notes.php, around line 314, the original (buggy) code is this:

$latest_note = $wpdb->get_var( $wpdb->prepare( "SELECT notecontent FROM ” . $ppn_db_notes .
“WHERE postid = ” . $post_id .
“ORDER BY notetime DESC
LIMIT 1;” ) );

To fix it, remove the above and replace it with:


$latest_note = $wpdb->get_var( $wpdb->prepare( "SELECT notecontent FROM %s WHERE postid = %d ORDER BY notetime DESC LIMIT 1;”, $ppn_db_notes, $post_id ) );

Hmph. This doesn’t really show up properly here, since the original and fixed code all contain backticks. I wish there was a preview option.

Anyway, here’s the same thing using quotes. The original code was:

$latest_note = $wpdb->get_var( $wpdb->prepare( 'SELECT "notecontent" FROM $ppn_db_notes
                                                        WHERE "postid" = $post_id
                                                        ORDER BY "notetime" DESC
                                                        LIMIT 1;' ) );

And the fixed version, which works for me, is:

$latest_note = $wpdb->get_var( $wpdb->prepare( 'SELECT "notecontent" FROM %s WHERE "postid" = %d ORDER BY "notetime" DESC LIMIT 1;', $ppn_db_notes, $post_id ) );

The “fixed” code can be copied and pasted as-is, no need to change the quotes or anything.

Hope this helps!