Word Press 2.0 Trackback fix revisit

After follow Ah Knight’s instruction of updating wp_posts to_ping column, it seem like I can’t perform normal trackback again. I got it fix and download the files here. Or read below for more details, there are 2 files need to be change, which is;

  • wp-includes/function-posts.php
  • wp-admin/execute-pings.php

file: wp-includes/function-post.php
line of code: 700

if ( empty($to_ping) )

Instead of doing nothing here, we replace the return; to Ah Knight’s code, become;

if ( empty($to_ping) ) {
$wpdb->query("UPDATE $wpdb->posts SET to_ping = '' WHERE ID = '$post_id'");

file: wp-admin/execute-pings.php
line of code: 22

while ($trackback = $wpdb->get_row("SELECT ID FROM $wpdb->posts WHERE TRIM(to_ping) != '' AND post_status != 'draft' LIMIT 1")) {
echo "Trackback : $trackback->ID

Some changes made here, make sure to_ping field is clean and make a trackbacks looping!

$trackbacks = $wpdb->get_results("SELECT ID FROM $wpdb->posts WHERE TRIM(to_ping) != '' AND post_status != 'draft'");

if (is_array($trackbacks) && count($trackbacks)) {
foreach ($trackbacks as $trackback ) {
echo "Trackback : $trackback->ID

Done, if you not sure what am I explaning above, you can download the file here in zip format, if you are worry the code is not working, backup your original file.

Happy Trackback!


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  3. My trackbacks quit working ever since I made the mistake of upgrading from 1.5 to 2.0.

    They fixed it partially last March (I believe) but now they are back to not working at all.

    With this fix I can receive trackbacks but can not send them.

  4. I’m using WP 2.1 and I can’t find those lines in the files you mentioned above. I’m having problems with receiving trackbacks but not sending. Hope someone can help me with this. Thanks! 🙂

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