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The best way to understand what a hook does is to look at where it occurs in the source code.
do_action( "hook_name" )
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.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 |
---|---|
1524 | */ |
1525 | function do_all_pings() { |
1526 | global $wpdb; |
1527 |
|
1528 | // Do pingbacks |
1529 | while ($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")) { |
1530 | $mid = $wpdb->get_var( "SELECT meta_id FROM {$wpdb->postmeta} WHERE post_id = {$ping->ID} AND meta_key = '_pingme' LIMIT 1"); |
1531 | do_action( 'delete_postmeta', $mid ); |
1532 | $wpdb->query( $wpdb->prepare( "DELETE FROM {$wpdb->postmeta} WHERE meta_id = %d", $mid ) ); |
1533 | do_action( 'deleted_postmeta', $mid ); |
1534 | pingback($ping->post_content, $ping->ID); |
1535 | } |
1536 |
|
1537 | // Do Enclosures |
1538 | while ($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")) { |
1539 | $mid = $wpdb->get_var( $wpdb->prepare("SELECT meta_id FROM {$wpdb->postmeta} WHERE post_id = %d AND meta_key = '_encloseme'", $enclosure->ID) ); |
1540 | do_action( 'delete_postmeta', $mid ); |
1541 | $wpdb->query( $wpdb->prepare("DELETE FROM {$wpdb->postmeta} WHERE meta_id = %d", $mid) ); |
1542 | do_action( 'deleted_postmeta', $mid ); |
1543 | do_enclose($enclosure->post_content, $enclosure->ID); |
1544 | } |
1545 |
|
1546 | // Do Trackbacks |
1547 | $trackbacks = $wpdb->get_col("SELECT ID FROM $wpdb->posts WHERE to_ping <> '' AND post_status = 'publish'"); |
1548 | if ( is_array($trackbacks) ) |
1549 | foreach ( $trackbacks as $trackback ) |
1550 | do_trackbacks($trackback); |
1551 |
|