/**
* Parse request to find correct WordPress query.
*
* Sets up the query variables based on the request. There are also many
* filters and actions that can be used to further manipulate the result.
*
* @since 2.0.0
*
* @global WP_Rewrite $wp_rewrite
*
* @param array|string $extra_query_vars Set the extra query variables.
*/
public function parse_request($extra_query_vars = '')
{
global $wp_rewrite;
/**
* Filter whether to parse the request.
*
* @since 3.5.0
*
* @param bool $bool Whether or not to parse the request. Default true.
* @param WP $this Current WordPress environment instance.
* @param array|string $extra_query_vars Extra passed query variables.
*/
if (!apply_filters('do_parse_request', true, $this, $extra_query_vars)) {
return;
}
$this->query_vars = array();
$post_type_query_vars = array();
if (is_array($extra_query_vars)) {
$this->extra_query_vars =& $extra_query_vars;
} elseif (!empty($extra_query_vars)) {
parse_str($extra_query_vars, $this->extra_query_vars);
}
// Process PATH_INFO, REQUEST_URI, and 404 for permalinks.
// Fetch the rewrite rules.
$rewrite = $wp_rewrite->wp_rewrite_rules();
if (!empty($rewrite)) {
// If we match a rewrite rule, this will be cleared.
$error = '404';
$this->did_permalink = true;
$pathinfo = isset($_SERVER['PATH_INFO']) ? $_SERVER['PATH_INFO'] : '';
list($pathinfo) = explode('?', $pathinfo);
$pathinfo = str_replace("%", "%25", $pathinfo);
list($req_uri) = explode('?', $_SERVER['REQUEST_URI']);
$self = $_SERVER['PHP_SELF'];
$home_path = trim(parse_url(home_url(), PHP_URL_PATH), '/');
$home_path_regex = sprintf('|^%s|i', preg_quote($home_path, '|'));
// Trim path info from the end and the leading home path from the
// front. For path info requests, this leaves us with the requesting
// filename, if any. For 404 requests, this leaves us with the
// requested permalink.
$req_uri = str_replace($pathinfo, '', $req_uri);
$req_uri = trim($req_uri, '/');
$req_uri = preg_replace($home_path_regex, '', $req_uri);
$req_uri = trim($req_uri, '/');
$pathinfo = trim($pathinfo, '/');
$pathinfo = preg_replace($home_path_regex, '', $pathinfo);
$pathinfo = trim($pathinfo, '/');
$self = trim($self, '/');
$self = preg_replace($home_path_regex, '', $self);
$self = trim($self, '/');
// The requested permalink is in $pathinfo for path info requests and
// $req_uri for other requests.
if (!empty($pathinfo) && !preg_match('|^.*' . $wp_rewrite->index . '$|', $pathinfo)) {
$request = $pathinfo;
} else {
// If the request uri is the index, blank it out so that we don't try to match it against a rule.
if ($req_uri == $wp_rewrite->index) {
$req_uri = '';
}
$request = $req_uri;
}
$this->request = $request;
// Look for matches.
$request_match = $request;
if (empty($request_match)) {
// An empty request could only match against ^$ regex
if (isset($rewrite['$'])) {
$this->matched_rule = '$';
$query = $rewrite['$'];
$matches = array('');
}
} else {
foreach ((array) $rewrite as $match => $query) {
// If the requesting file is the anchor of the match, prepend it to the path info.
if (!empty($req_uri) && strpos($match, $req_uri) === 0 && $req_uri != $request) {
$request_match = $req_uri . '/' . $request;
}
if (preg_match("#^{$match}#", $request_match, $matches) || preg_match("#^{$match}#", urldecode($request_match), $matches)) {
if ($wp_rewrite->use_verbose_page_rules && preg_match('/pagename=\\$matches\\[([0-9]+)\\]/', $query, $varmatch)) {
// This is a verbose page match, let's check to be sure about it.
if (!get_page_by_path($matches[$varmatch[1]])) {
continue;
}
}
// Got a match.
$this->matched_rule = $match;
break;
}
}
}
if (isset($this->matched_rule)) {
// Trim the query of everything up to the '?'.
$query = preg_replace("!^.+\\?!", '', $query);
// Substitute the substring matches into the query.
$query = addslashes(WP_MatchesMapRegex::apply($query, $matches));
$this->matched_query = $query;
// Parse the query.
parse_str($query, $perma_query_vars);
// If we're processing a 404 request, clear the error var since we found something.
if ('404' == $error) {
unset($error, $_GET['error']);
}
}
// If req_uri is empty or if it is a request for ourself, unset error.
if (empty($request) || $req_uri == $self || strpos($_SERVER['PHP_SELF'], 'wp-admin/') !== false) {
unset($error, $_GET['error']);
if (isset($perma_query_vars) && strpos($_SERVER['PHP_SELF'], 'wp-admin/') !== false) {
unset($perma_query_vars);
}
$this->did_permalink = false;
}
}
/**
* Filter the query variables whitelist before processing.
*
* Allows (publicly allowed) query vars to be added, removed, or changed prior
* to executing the query. Needed to allow custom rewrite rules using your own arguments
* to work, or any other custom query variables you want to be publicly available.
*
* @since 1.5.0
*
* @param array $public_query_vars The array of whitelisted query variables.
*/
$this->public_query_vars = apply_filters('query_vars', $this->public_query_vars);
foreach (get_post_types(array(), 'objects') as $post_type => $t) {
if ($t->query_var) {
$post_type_query_vars[$t->query_var] = $post_type;
}
}
foreach ($this->public_query_vars as $wpvar) {
if (isset($this->extra_query_vars[$wpvar])) {
$this->query_vars[$wpvar] = $this->extra_query_vars[$wpvar];
} elseif (isset($_POST[$wpvar])) {
$this->query_vars[$wpvar] = $_POST[$wpvar];
} elseif (isset($_GET[$wpvar])) {
$this->query_vars[$wpvar] = $_GET[$wpvar];
} elseif (isset($perma_query_vars[$wpvar])) {
$this->query_vars[$wpvar] = $perma_query_vars[$wpvar];
}
if (!empty($this->query_vars[$wpvar])) {
if (!is_array($this->query_vars[$wpvar])) {
$this->query_vars[$wpvar] = (string) $this->query_vars[$wpvar];
} else {
foreach ($this->query_vars[$wpvar] as $vkey => $v) {
if (!is_object($v)) {
$this->query_vars[$wpvar][$vkey] = (string) $v;
}
}
}
if (isset($post_type_query_vars[$wpvar])) {
$this->query_vars['post_type'] = $post_type_query_vars[$wpvar];
$this->query_vars['name'] = $this->query_vars[$wpvar];
}
}
}
// Convert urldecoded spaces back into +
foreach (get_taxonomies(array(), 'objects') as $taxonomy => $t) {
if ($t->query_var && isset($this->query_vars[$t->query_var])) {
$this->query_vars[$t->query_var] = str_replace(' ', '+', $this->query_vars[$t->query_var]);
}
}
// Limit publicly queried post_types to those that are publicly_queryable
if (isset($this->query_vars['post_type'])) {
$queryable_post_types = get_post_types(array('publicly_queryable' => true));
if (!is_array($this->query_vars['post_type'])) {
if (!in_array($this->query_vars['post_type'], $queryable_post_types)) {
unset($this->query_vars['post_type']);
}
} else {
$this->query_vars['post_type'] = array_intersect($this->query_vars['post_type'], $queryable_post_types);
}
}
// Resolve conflicts between posts with numeric slugs and date archive queries.
$this->query_vars = wp_resolve_numeric_slug_conflicts($this->query_vars);
foreach ((array) $this->private_query_vars as $var) {
if (isset($this->extra_query_vars[$var])) {
$this->query_vars[$var] = $this->extra_query_vars[$var];
}
}
if (isset($error)) {
$this->query_vars['error'] = $error;
}
/**
* Filter the array of parsed query variables.
*
* @since 2.1.0
*
* @param array $query_vars The array of requested query variables.
*/
$this->query_vars = apply_filters('request', $this->query_vars);
/**
* Fires once all query variables for the current request have been parsed.
*
* @since 2.1.0
*
* @param WP &$this Current WordPress environment instance (passed by reference).
*/
do_action_ref_array('parse_request', array(&$this));
}
/**
* Examine a url and try to determine the post ID it represents.
*
* Checks are supposedly from the hosted site blog.
*
* @since 1.0.0
*
* @global WP_Rewrite $wp_rewrite
* @global WP $wp
*
* @param string $url Permalink to check.
* @return int Post ID, or 0 on failure.
*/
function url_to_postid( $url ) {
global $wp_rewrite;
/**
* Filter the URL to derive the post ID from.
*
* @since 2.2.0
*
* @param string $url The URL to derive the post ID from.
*/
$url = apply_filters( 'url_to_postid', $url );
// First, check to see if there is a 'p=N' or 'page_id=N' to match against
if ( preg_match('#[?&](p|page_id|attachment_id)=(\d+)#', $url, $values) ) {
$id = absint($values[2]);
if ( $id )
return $id;
}
// Check to see if we are using rewrite rules
$rewrite = $wp_rewrite->wp_rewrite_rules();
// Not using rewrite rules, and 'p=N' and 'page_id=N' methods failed, so we're out of options
if ( empty($rewrite) )
return 0;
// Get rid of the #anchor
$url_split = explode('#', $url);
$url = $url_split[0];
// Get rid of URL ?query=string
$url_split = explode('?', $url);
$url = $url_split[0];
// Add 'www.' if it is absent and should be there
if ( false !== strpos(home_url(), '://www.') && false === strpos($url, '://www.') )
$url = str_replace('://', '://www.', $url);
// Strip 'www.' if it is present and shouldn't be
if ( false === strpos(home_url(), '://www.') )
$url = str_replace('://www.', '://', $url);
// Strip 'index.php/' if we're not using path info permalinks
if ( !$wp_rewrite->using_index_permalinks() )
$url = str_replace( $wp_rewrite->index . '/', '', $url );
if ( false !== strpos( trailingslashit( $url ), home_url( '/' ) ) ) {
// Chop off http://domain.com/[path]
$url = str_replace(home_url(), '', $url);
} else {
// Chop off /path/to/blog
$home_path = parse_url( home_url( '/' ) );
$home_path = isset( $home_path['path'] ) ? $home_path['path'] : '' ;
$url = preg_replace( sprintf( '#^%s#', preg_quote( $home_path ) ), '', trailingslashit( $url ) );
}
// Trim leading and lagging slashes
$url = trim($url, '/');
$request = $url;
$post_type_query_vars = array();
foreach ( get_post_types( array() , 'objects' ) as $post_type => $t ) {
if ( ! empty( $t->query_var ) )
$post_type_query_vars[ $t->query_var ] = $post_type;
}
// Look for matches.
$request_match = $request;
foreach ( (array)$rewrite as $match => $query) {
// If the requesting file is the anchor of the match, prepend it
// to the path info.
if ( !empty($url) && ($url != $request) && (strpos($match, $url) === 0) )
$request_match = $url . '/' . $request;
if ( preg_match("#^$match#", $request_match, $matches) ) {
if ( $wp_rewrite->use_verbose_page_rules && preg_match( '/pagename=\$matches\[([0-9]+)\]/', $query, $varmatch ) ) {
// This is a verbose page match, let's check to be sure about it.
if ( ! get_page_by_path( $matches[ $varmatch[1] ] ) )
continue;
}
// Got a match.
// Trim the query of everything up to the '?'.
$query = preg_replace("!^.+\?!", '', $query);
// Substitute the substring matches into the query.
$query = addslashes(WP_MatchesMapRegex::apply($query, $matches));
// Filter out non-public query vars
global $wp;
parse_str( $query, $query_vars );
$query = array();
foreach ( (array) $query_vars as $key => $value ) {
if ( in_array( $key, $wp->public_query_vars ) ){
$query[$key] = $value;
if ( isset( $post_type_query_vars[$key] ) ) {
$query['post_type'] = $post_type_query_vars[$key];
$query['name'] = $value;
}
}
}
// Resolve conflicts between posts with numeric slugs and date archive queries.
$query = wp_resolve_numeric_slug_conflicts( $query );
// Do the query
$query = new WP_Query( $query );
if ( ! empty( $query->posts ) && $query->is_singular )
return $query->post->ID;
else
return 0;
}
}
return 0;
}
