WordPress/wp-includes/functions-post.php

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<?php
/**** DB Functions ****/
/*
* generic function for inserting data into the posts table.
*/
function wp_insert_post($postarr = array()) {
global $wpdb, $post_default_category;
// export array as variables
extract($postarr);
// Do some escapes for safety
$post_title = $wpdb->escape($post_title);
$post_name = sanitize_title($post_title);
$post_excerpt = $wpdb->escape($post_excerpt);
$post_content = $wpdb->escape($post_content);
$post_author = (int) $post_author;
// Make sure we set a valid category
if (0 == count($post_category) || !is_array($post_category)) {
$post_category = array($post_default_category);
}
$post_cat = $post_category[0];
if (empty($post_date))
$post_date = current_time('mysql');
// Make sure we have a good gmt date:
if (empty($post_date_gmt))
$post_date_gmt = get_gmt_from_date($post_date);
if (empty($comment_status))
$comment_status = get_settings('default_comment_status');
if (empty($ping_status))
$ping_status = get_settings('default_ping_status');
$sql = "INSERT INTO $wpdb->posts
(post_author, post_date, post_date_gmt, post_modified, post_modified_gmt, post_content, post_title, post_excerpt, post_category, post_status, post_name, comment_status, ping_status)
VALUES ('$post_author', '$post_date', '$post_date_gmt', '$post_date', '$post_date_gmt', '$post_content', '$post_title', '$post_excerpt', '$post_cat', '$post_status', '$post_name', '$comment_status', '$ping_status')";
$result = $wpdb->query($sql);
$post_ID = $wpdb->insert_id;
// Set GUID
$wpdb->query("UPDATE $wpdb->posts SET guid = '" . get_permalink($post_ID) . "' WHERE ID = '$post_ID'");
wp_set_post_cats('', $post_ID, $post_category);
if ($post_status == 'publish') {
do_action('publish_post', $post_ID);
}
pingback($content, $post_ID);
// Return insert_id if we got a good result, otherwise return zero.
return $result ? $post_ID : 0;
}
function wp_get_single_post($postid = 0, $mode = OBJECT) {
global $wpdb;
$sql = "SELECT * FROM $wpdb->posts WHERE ID=$postid";
$result = $wpdb->get_row($sql, $mode);
// Set categories
$result['post_category'] = wp_get_post_cats('',$postid);
return $result;
}
function wp_get_recent_posts($num = 10) {
global $wpdb;
// Set the limit clause, if we got a limit
if ($num) {
$limit = "LIMIT $num";
}
$sql = "SELECT * FROM $wpdb->posts ORDER BY post_date DESC $limit";
$result = $wpdb->get_results($sql,ARRAY_A);
return $result?$result:array();
}
function wp_update_post($postarr = array()) {
global $wpdb;
// First get all of the original fields
extract(wp_get_single_post($postarr['ID'],ARRAY_A));
// Now overwrite any changed values being passed in
extract($postarr);
// Make sure we set a valid category
if (0 == count($post_category) || !is_array($post_category)) {
$post_category = array($post_default_category);
}
// Do some escapes for safety
$post_title = $wpdb->escape($post_title);
$post_excerpt = $wpdb->escape($post_excerpt);
$post_content = $wpdb->escape($post_content);
$post_modified = current_time('mysql');
$post_modified_gmt = current_time('mysql', 1);
$sql = "UPDATE $wpdb->posts
SET post_content = '$post_content',
post_title = '$post_title',
post_category = $post_category[0],
post_status = '$post_status',
post_date = '$post_date',
post_date_gmt = '$post_date_gmt',
post_modified = '$post_modified',
post_modified_gmt = '$post_modified_gmt',
post_excerpt = '$post_excerpt',
ping_status = '$ping_status',
comment_status = '$comment_status'
WHERE ID = $ID";
$result = $wpdb->query($sql);
wp_set_post_cats('',$ID,$post_category);
return $wpdb->rows_affected;
}
function wp_get_post_cats($blogid = '1', $post_ID = 0) {
global $wpdb;
$sql = "SELECT category_id
FROM $wpdb->post2cat
WHERE post_id = $post_ID
ORDER BY category_id";
$result = $wpdb->get_col($sql);
return array_unique($result);
}
function wp_set_post_cats($blogid = '1', $post_ID = 0, $post_categories = array()) {
global $wpdb;
// If $post_categories isn't already an array, make it one:
if (!is_array($post_categories)) {
if (!$post_categories) {
$post_categories = 1;
}
$post_categories = array($post_categories);
}
$post_categories = array_unique($post_categories);
// First the old categories
$old_categories = $wpdb->get_col("
SELECT category_id
FROM $wpdb->post2cat
WHERE post_id = $post_ID");
if (!$old_categories) {
$old_categories = array();
} else {
$old_categories = array_unique($old_categories);
}
$oldies = print_r($old_categories,1);
$newbies = print_r($post_categories,1);
logio("O","Old: $oldies\nNew: $newbies\n");
// Delete any?
$delete_cats = array_diff($old_categories,$post_categories);
logio("O","Delete: " . print_r($delete_cats,1));
if ($delete_cats) {
foreach ($delete_cats as $del) {
$wpdb->query("
DELETE FROM $wpdb->post2cat
WHERE category_id = $del
AND post_id = $post_ID
");
logio("O","deleting post/cat: $post_ID, $del");
}
}
// Add any?
$add_cats = array_diff($post_categories, $old_categories);
logio("O","Add: " . print_r($add_cats,1));
if ($add_cats) {
foreach ($add_cats as $new_cat) {
$wpdb->query("
INSERT INTO $wpdb->post2cat (post_id, category_id)
VALUES ($post_ID, $new_cat)");
logio("O","adding post/cat: $post_ID, $new_cat");
}
}
} // wp_set_post_cats()
function wp_delete_post($postid = 0) {
global $wpdb;
$sql = "DELETE FROM $wpdb->post2cat WHERE post_id = $postid";
$wpdb->query($sql);
$sql = "DELETE FROM $wpdb->posts WHERE ID = $postid";
$wpdb->query($sql);
$result = $wpdb->rows_affected;
return $result;
}
/**** /DB Functions ****/
/**** Misc ****/
// get permalink from post ID
function post_permalink($post_id = 0, $mode = '') { // $mode legacy
return get_permalink($post_id);
}
// Get the name of a category from its ID
function get_cat_name($cat_id) {
global $wpdb;
$cat_id -= 0; // force numeric
$name = $wpdb->get_var("SELECT cat_name FROM $wpdb->categories WHERE cat_ID=$cat_id");
return $name;
}
// Get the ID of a category from its name
function get_cat_ID($cat_name='General') {
global $wpdb;
$cid = $wpdb->get_var("SELECT cat_ID FROM $wpdb->categories WHERE cat_name='$cat_name'");
return $cid?$cid:1; // default to cat 1
}
// Get author's preferred display name
function get_author_name($auth_id) {
$authordata = get_userdata($auth_id);
switch($authordata["user_idmode"]) {
case "nickname":
$authorname = $authordata["user_nickname"];
case "login":
$authorname = $authordata["user_login"];
break;
case "firstname":
$authorname = $authordata["user_firstname"];
break;
case "lastname":
$authorname = $authordata["user_lastname"];
break;
case "namefl":
$authorname = $authordata["user_firstname"]." ".$authordata["user_lastname"];
break;
case "namelf":
$authorname = $authordata["user_lastname"]." ".$authordata["user_firstname"];
break;
default:
$authorname = $authordata["user_nickname"];
break;
}
return $authorname;
}
// get extended entry info (<!--more-->)
function get_extended($post) {
list($main,$extended) = explode('<!--more-->',$post);
// Strip leading and trailing whitespace
$main = preg_replace('/^[\s]*(.*)[\s]*$/','\\1',$main);
$extended = preg_replace('/^[\s]*(.*)[\s]*$/','\\1',$extended);
return array('main' => $main, 'extended' => $extended);
}
// do trackbacks for a list of urls
// borrowed from edit.php
// accepts a comma-separated list of trackback urls and a post id
function trackback_url_list($tb_list, $post_id) {
if (!empty($tb_list)) {
// get post data
$postdata = wp_get_single_post($post_id, ARRAY_A);
// import postdata as variables
extract($postdata);
// form an excerpt
$excerpt = strip_tags($post_excerpt?$post_excerpt:$post_content);
if (strlen($excerpt) > 255) {
$excerpt = substr($excerpt,0,252) . '...';
}
$trackback_urls = explode(',', $tb_list);
foreach($trackback_urls as $tb_url) {
$tb_url = trim($tb_url);
trackback($tb_url, stripslashes($post_title), $excerpt, $post_id);
}
}
}
// query user capabilities
/* returns true if a given $user_id can create a new post.
note: optional $blog_id and $category_id for future usage? */
function user_can_create_post($user_id, $blog_id = 1, $category_id = 'None') {
// rather simplistic. shall evolve with future permission system overhaul
$author_data = get_userdata($user_id);
return ($author_data->user_level > 1);
}
/* returns true if a given $user_id can edit a given $post_id.
note: optional $blog_id for future usage? */
function user_can_edit_post($user_id, $post_id, $blog_id = 1) {
$author_data = get_userdata($user_id);
$post_data = get_postdata($post_id);
$post_author_data = get_userdata($post_data['Author_ID']);
if ( ($user_id == $post_author_data->ID)
|| ($author_data->user_level > $post_author_data->user_level) ) {
return true;
} else {
return false;
}
}
/* returns true if a given $user_id can delete a given $post_id.
note: optional $blog_id for future usage? */
function user_can_delete_post($user_id, $post_id, $blog_id = 1) {
// right now if one can edit, one can delete
return user_can_edit_post($user_id, $post_id, $blog_id);
}
function wp_new_comment($commentdata) {
global $wpdb;
extract($commentdata);
$comment_post_id = (int) $comment_post_id;
$comment_author = strip_tags($comment_author);
$comment_author = htmlspecialchars($comment_author);
$comment_author = $wpdb->escape($comment_author);
$comment_author_email = preg_replace('/[^a-z+_.@-]/i', '', $comment_author_email);
$comment_author_url = strip_tags($comment_author_url);
$comment_author_url = htmlspecialchars($comment_author_url);
$comment_author_url = $wpdb->escape($comment_author_url);
$comment_content = apply_filters('comment_content_presave', $comment_content);
$comment_content = $wpdb->escape($comment_content);
$user_ip = addslashes($_SERVER['REMOTE_ADDR']);
$user_domain = addslashes( gethostbyaddr($user_ip) );
$now = current_time('mysql');
$now_gmt = current_time('mysql', 1);
$user_agent = addslashes($_SERVER['HTTP_USER_AGENT']);
// Simple flood-protection
if ( $lasttime = $wpdb->get_var("SELECT comment_date FROM $wpdb->comments WHERE comment_author_IP = '$user_ip' ORDER BY comment_date DESC LIMIT 1") ) {
$time_lastcomment= mysql2date('U', $lasttime);
$time_newcomment= mysql2date('U', $now);
if ( ($time_newcomment - $time_lastcomment) < 15 )
die( __('Sorry, you can only post a new comment once every 15 seconds. Slow down cowboy.') );
}
if( check_comment($author, $email, $url, $comment, $user_ip, $user_agent) )
$approved = 1;
else
$approved = 0;
$result = $wpdb->query("INSERT INTO $wpdb->comments
(comment_post_ID, comment_author, comment_author_email, comment_author_url, comment_author_IP, comment_date, comment_date_gmt, comment_content, comment_approved, comment_agent)
VALUES
('$comment_post_ID', '$author', '$email', '$tb_url', '$user_ip', '$now', '$now_gmt', '$comment', '$approved', '$user_agent')
");
if ( get_option('comments_notify') )
wp_notify_postauthor($wpdb->insert_id, $comment_type);
return $result;
}
?>