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To save our bandwidth, we show only a snippet of code around each occurence of the hook. View complete file in SVN (without highlighting).
The best way to understand what a hook does is to look at where it occurs in the source code.
do_action( "hook_name" )apply_filters( "hook_name", "what_to_filter" ).Remember, this hook may occur in more than one file. Moreover, the hook's context may change from version to version.
This hook occurs 2 times in this file.
| Line | Code |
|---|---|
| 1589 | */ |
| 1590 | function do_all_pings() { |
| 1591 | global $wpdb; |
| 1592 | |
| 1593 | // Do pingbacks |
| 1594 | while ($ping = $wpdb->get_row("SELECT * FROM {$wpdb->posts}, {$wpdb->postmeta} WHERE {$wpdb->posts}.ID = {$wpdb->postmeta}.post_id AND {$wpdb->postmeta}.meta_key = '_pingme' LIMIT 1")) { |
| 1595 | $mid = $wpdb->get_var( "SELECT meta_id FROM {$wpdb->postmeta} WHERE post_id = {$ping->ID} AND meta_key = '_pingme' LIMIT 1"); |
| 1596 | do_action( 'delete_postmeta', $mid ); |
| 1597 | $wpdb->query( $wpdb->prepare( "DELETE FROM {$wpdb->postmeta} WHERE meta_id = %d", $mid ) ); |
| 1598 | do_action( 'deleted_postmeta', $mid ); |
| 1599 | pingback($ping->post_content, $ping->ID); |
| 1600 | } |
| 1601 | |
| 1602 | // Do Enclosures |
| 1603 | while ($enclosure = $wpdb->get_row("SELECT * FROM {$wpdb->posts}, {$wpdb->postmeta} WHERE {$wpdb->posts}.ID = {$wpdb->postmeta}.post_id AND {$wpdb->postmeta}.meta_key = '_encloseme' LIMIT 1")) { |
| 1604 | $mid = $wpdb->get_var( $wpdb->prepare("SELECT meta_id FROM {$wpdb->postmeta} WHERE post_id = %d AND meta_key = '_encloseme'", $enclosure->ID) ); |
| 1605 | do_action( 'delete_postmeta', $mid ); |
| 1606 | $wpdb->query( $wpdb->prepare("DELETE FROM {$wpdb->postmeta} WHERE meta_id = %d", $mid) ); |
| 1607 | do_action( 'deleted_postmeta', $mid ); |
| 1608 | do_enclose($enclosure->post_content, $enclosure->ID); |
| 1609 | } |
| 1610 | |
| 1611 | // Do Trackbacks |
| 1612 | $trackbacks = $wpdb->get_col("SELECT ID FROM $wpdb->posts WHERE to_ping <> '' AND post_status = 'publish'"); |
| 1613 | if ( is_array($trackbacks) ) |
| 1614 | foreach ( $trackbacks as $trackback ) |
| 1615 | do_trackbacks($trackback); |
| 1616 | |