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php7-mysql-data/Kapitel_7/Lektion_4/wordpress/wp-includes/class-wp-user-query.php

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Initiale Version
2016-08-16 21:20:53 +02:00
<?php
/**
* User API: WP_User_Query class
*
* @package WordPress
* @subpackage Users
* @since 4.4.0
*/
/**
* Core class used for querying users.
*
* @since 3.1.0
*
* @see WP_User_Query::prepare_query() for information on accepted arguments.
*/
class WP_User_Query {
/**
* Query vars, after parsing
*
* @since 3.5.0
* @access public
* @var array
*/
public $query_vars = array();
/**
* List of found user ids
*
* @since 3.1.0
* @access private
* @var array
*/
private $results;
/**
* Total number of found users for the current query
*
* @since 3.1.0
* @access private
* @var int
*/
private $total_users = 0;
/**
* Metadata query container.
*
* @since 4.2.0
* @access public
* @var WP_Meta_Query
*/
public $meta_query = false;
/**
* The SQL query used to fetch matching users.
*
* @since 4.4.0
* @access public
* @var string
*/
public $request;
private $compat_fields = array( 'results', 'total_users' );
// SQL clauses
public $query_fields;
public $query_from;
public $query_where;
public $query_orderby;
public $query_limit;
/**
* PHP5 constructor.
*
* @since 3.1.0
*
* @param null|string|array $query Optional. The query variables.
*/
public function __construct( $query = null ) {
if ( ! empty( $query ) ) {
$this->prepare_query( $query );
$this->query();
}
}
/**
* Fills in missing query variables with default values.
*
* @since 4.4.0
* @access public
*
* @param array $args Query vars, as passed to `WP_User_Query`.
* @return array Complete query variables with undefined ones filled in with defaults.
*/
public static function fill_query_vars( $args ) {
$defaults = array(
'blog_id' => $GLOBALS['blog_id'],
'role' => '',
'role__in' => array(),
'role__not_in' => array(),
'meta_key' => '',
'meta_value' => '',
'meta_compare' => '',
'include' => array(),
'exclude' => array(),
'search' => '',
'search_columns' => array(),
'orderby' => 'login',
'order' => 'ASC',
'offset' => '',
'number' => '',
'paged' => 1,
'count_total' => true,
'fields' => 'all',
'who' => '',
'has_published_posts' => null,
);
return wp_parse_args( $args, $defaults );
}
/**
* Prepare the query variables.
*
* @since 3.1.0
* @since 4.1.0 Added the ability to order by the `include` value.
* @since 4.2.0 Added 'meta_value_num' support for `$orderby` parameter. Added multi-dimensional array syntax
* for `$orderby` parameter.
* @since 4.3.0 Added 'has_published_posts' parameter.
* @since 4.4.0 Added 'paged', 'role__in', and 'role__not_in' parameters. The 'role' parameter was updated to
* permit an array or comma-separated list of values. The 'number' parameter was updated to support
* querying for all users with using -1.
*
* @access public
*
* @global wpdb $wpdb WordPress database abstraction object.
* @global int $blog_id
*
* @param string|array $query {
* Optional. Array or string of Query parameters.
*
* @type int $blog_id The site ID. Default is the current site.
* @type string|array $role An array or a comma-separated list of role names that users must match
* to be included in results. Note that this is an inclusive list: users
* must match *each* role. Default empty.
* @type array $role__in An array of role names. Matched users must have at least one of these
* roles. Default empty array.
* @type array $role__not_in An array of role names to exclude. Users matching one or more of these
* roles will not be included in results. Default empty array.
* @type string $meta_key User meta key. Default empty.
* @type string $meta_value User meta value. Default empty.
* @type string $meta_compare Comparison operator to test the `$meta_value`. Accepts '=', '!=',
* '>', '>=', '<', '<=', 'LIKE', 'NOT LIKE', 'IN', 'NOT IN',
* 'BETWEEN', 'NOT BETWEEN', 'EXISTS', 'NOT EXISTS', 'REGEXP',
* 'NOT REGEXP', or 'RLIKE'. Default '='.
* @type array $include An array of user IDs to include. Default empty array.
* @type array $exclude An array of user IDs to exclude. Default empty array.
* @type string $search Search keyword. Searches for possible string matches on columns.
* When `$search_columns` is left empty, it tries to determine which
* column to search in based on search string. Default empty.
* @type array $search_columns Array of column names to be searched. Accepts 'ID', 'login',
* 'nicename', 'email', 'url'. Default empty array.
* @type string|array $orderby Field(s) to sort the retrieved users by. May be a single value,
* an array of values, or a multi-dimensional array with fields as
* keys and orders ('ASC' or 'DESC') as values. Accepted values are
* 'ID', 'display_name' (or 'name'), 'include', 'user_login'
* (or 'login'), 'user_nicename' (or 'nicename'), 'user_email'
* (or 'email'), 'user_url' (or 'url'), 'user_registered'
* or 'registered'), 'post_count', 'meta_value', 'meta_value_num',
* the value of `$meta_key`, or an array key of `$meta_query`. To use
* 'meta_value' or 'meta_value_num', `$meta_key` must be also be
* defined. Default 'user_login'.
* @type string $order Designates ascending or descending order of users. Order values
* passed as part of an `$orderby` array take precedence over this
* parameter. Accepts 'ASC', 'DESC'. Default 'ASC'.
* @type int $offset Number of users to offset in retrieved results. Can be used in
* conjunction with pagination. Default 0.
* @type int $number Number of users to limit the query for. Can be used in
* conjunction with pagination. Value -1 (all) is supported, but
* should be used with caution on larger sites.
* Default empty (all users).
* @type int $paged When used with number, defines the page of results to return.
* Default 1.
* @type bool $count_total Whether to count the total number of users found. If pagination
* is not needed, setting this to false can improve performance.
* Default true.
* @type string|array $fields Which fields to return. Single or all fields (string), or array
* of fields. Accepts 'ID', 'display_name', 'user_login',
* 'user_nicename', 'user_email', 'user_url', 'user_registered'.
* Use 'all' for all fields and 'all_with_meta' to include
* meta fields. Default 'all'.
* @type string $who Type of users to query. Accepts 'authors'.
* Default empty (all users).
* @type bool|array $has_published_posts Pass an array of post types to filter results to users who have
* published posts in those post types. `true` is an alias for all
* public post types.
* }
*/
public function prepare_query( $query = array() ) {
global $wpdb;
if ( empty( $this->query_vars ) || ! empty( $query ) ) {
$this->query_limit = null;
$this->query_vars = $this->fill_query_vars( $query );
}
/**
* Fires before the WP_User_Query has been parsed.
*
* The passed WP_User_Query object contains the query variables, not
* yet passed into SQL.
*
* @since 4.0.0
*
* @param WP_User_Query $this The current WP_User_Query instance,
* passed by reference.
*/
do_action( 'pre_get_users', $this );
// Ensure that query vars are filled after 'pre_get_users'.
$qv =& $this->query_vars;
$qv = $this->fill_query_vars( $qv );
if ( is_array( $qv['fields'] ) ) {
$qv['fields'] = array_unique( $qv['fields'] );
$this->query_fields = array();
foreach ( $qv['fields'] as $field ) {
$field = 'ID' === $field ? 'ID' : sanitize_key( $field );
$this->query_fields[] = "$wpdb->users.$field";
}
$this->query_fields = implode( ',', $this->query_fields );
} elseif ( 'all' == $qv['fields'] ) {
$this->query_fields = "$wpdb->users.*";
} else {
$this->query_fields = "$wpdb->users.ID";
}
if ( isset( $qv['count_total'] ) && $qv['count_total'] )
$this->query_fields = 'SQL_CALC_FOUND_ROWS ' . $this->query_fields;
$this->query_from = "FROM $wpdb->users";
$this->query_where = "WHERE 1=1";
// Parse and sanitize 'include', for use by 'orderby' as well as 'include' below.
if ( ! empty( $qv['include'] ) ) {
$include = wp_parse_id_list( $qv['include'] );
} else {
$include = false;
}
$blog_id = 0;
if ( isset( $qv['blog_id'] ) ) {
$blog_id = absint( $qv['blog_id'] );
}
if ( isset( $qv['who'] ) && 'authors' == $qv['who'] && $blog_id ) {
$qv['meta_key'] = $wpdb->get_blog_prefix( $blog_id ) . 'user_level';
$qv['meta_value'] = 0;
$qv['meta_compare'] = '!=';
$qv['blog_id'] = $blog_id = 0; // Prevent extra meta query
}
if ( $qv['has_published_posts'] && $blog_id ) {
if ( true === $qv['has_published_posts'] ) {
$post_types = get_post_types( array( 'public' => true ) );
} else {
$post_types = (array) $qv['has_published_posts'];
}
foreach ( $post_types as &$post_type ) {
$post_type = $wpdb->prepare( '%s', $post_type );
}
$posts_table = $wpdb->get_blog_prefix( $blog_id ) . 'posts';
$this->query_where .= " AND $wpdb->users.ID IN ( SELECT DISTINCT $posts_table.post_author FROM $posts_table WHERE $posts_table.post_status = 'publish' AND $posts_table.post_type IN ( " . join( ", ", $post_types ) . " ) )";
}
// Meta query.
$this->meta_query = new WP_Meta_Query();
$this->meta_query->parse_query_vars( $qv );
$roles = array();
if ( isset( $qv['role'] ) ) {
if ( is_array( $qv['role'] ) ) {
$roles = $qv['role'];
} elseif ( is_string( $qv['role'] ) && ! empty( $qv['role'] ) ) {
$roles = array_map( 'trim', explode( ',', $qv['role'] ) );
}
}
$role__in = array();
if ( isset( $qv['role__in'] ) ) {
$role__in = (array) $qv['role__in'];
}
$role__not_in = array();
if ( isset( $qv['role__not_in'] ) ) {
$role__not_in = (array) $qv['role__not_in'];
}
if ( $blog_id && ( ! empty( $roles ) || ! empty( $role__in ) || ! empty( $role__not_in ) || is_multisite() ) ) {
$role_queries = array();
$roles_clauses = array( 'relation' => 'AND' );
if ( ! empty( $roles ) ) {
foreach ( $roles as $role ) {
$roles_clauses[] = array(
'key' => $wpdb->get_blog_prefix( $blog_id ) . 'capabilities',
'value' => '"' . $role . '"',
'compare' => 'LIKE',
);
}
$role_queries[] = $roles_clauses;
}
$role__in_clauses = array( 'relation' => 'OR' );
if ( ! empty( $role__in ) ) {
foreach ( $role__in as $role ) {
$role__in_clauses[] = array(
'key' => $wpdb->get_blog_prefix( $blog_id ) . 'capabilities',
'value' => '"' . $role . '"',
'compare' => 'LIKE',
);
}
$role_queries[] = $role__in_clauses;
}
$role__not_in_clauses = array( 'relation' => 'AND' );
if ( ! empty( $role__not_in ) ) {
foreach ( $role__not_in as $role ) {
$role__not_in_clauses[] = array(
'key' => $wpdb->get_blog_prefix( $blog_id ) . 'capabilities',
'value' => '"' . $role . '"',
'compare' => 'NOT LIKE',
);
}
$role_queries[] = $role__not_in_clauses;
}
// If there are no specific roles named, make sure the user is a member of the site.
if ( empty( $role_queries ) ) {
$role_queries[] = array(
'key' => $wpdb->get_blog_prefix( $blog_id ) . 'capabilities',
'compare' => 'EXISTS',
);
}
// Specify that role queries should be joined with AND.
$role_queries['relation'] = 'AND';
if ( empty( $this->meta_query->queries ) ) {
$this->meta_query->queries = $role_queries;
} else {
// Append the cap query to the original queries and reparse the query.
$this->meta_query->queries = array(
'relation' => 'AND',
array( $this->meta_query->queries, $role_queries ),
);
}
$this->meta_query->parse_query_vars( $this->meta_query->queries );
}
if ( ! empty( $this->meta_query->queries ) ) {
$clauses = $this->meta_query->get_sql( 'user', $wpdb->users, 'ID', $this );
$this->query_from .= $clauses['join'];
$this->query_where .= $clauses['where'];
if ( $this->meta_query->has_or_relation() ) {
$this->query_fields = 'DISTINCT ' . $this->query_fields;
}
}
// sorting
$qv['order'] = isset( $qv['order'] ) ? strtoupper( $qv['order'] ) : '';
$order = $this->parse_order( $qv['order'] );
if ( empty( $qv['orderby'] ) ) {
// Default order is by 'user_login'.
$ordersby = array( 'user_login' => $order );
} elseif ( is_array( $qv['orderby'] ) ) {
$ordersby = $qv['orderby'];
} else {
// 'orderby' values may be a comma- or space-separated list.
$ordersby = preg_split( '/[,\s]+/', $qv['orderby'] );
}
$orderby_array = array();
foreach ( $ordersby as $_key => $_value ) {
if ( ! $_value ) {
continue;
}
if ( is_int( $_key ) ) {
// Integer key means this is a flat array of 'orderby' fields.
$_orderby = $_value;
$_order = $order;
} else {
// Non-integer key means this the key is the field and the value is ASC/DESC.
$_orderby = $_key;
$_order = $_value;
}
$parsed = $this->parse_orderby( $_orderby );
if ( ! $parsed ) {
continue;
}
$orderby_array[] = $parsed . ' ' . $this->parse_order( $_order );
}
// If no valid clauses were found, order by user_login.
if ( empty( $orderby_array ) ) {
$orderby_array[] = "user_login $order";
}
$this->query_orderby = 'ORDER BY ' . implode( ', ', $orderby_array );
// limit
if ( isset( $qv['number'] ) && $qv['number'] > 0 ) {
if ( $qv['offset'] ) {
$this->query_limit = $wpdb->prepare("LIMIT %d, %d", $qv['offset'], $qv['number']);
} else {
$this->query_limit = $wpdb->prepare( "LIMIT %d, %d", $qv['number'] * ( $qv['paged'] - 1 ), $qv['number'] );
}
}
$search = '';
if ( isset( $qv['search'] ) )
$search = trim( $qv['search'] );
if ( $search ) {
$leading_wild = ( ltrim($search, '*') != $search );
$trailing_wild = ( rtrim($search, '*') != $search );
if ( $leading_wild && $trailing_wild )
$wild = 'both';
elseif ( $leading_wild )
$wild = 'leading';
elseif ( $trailing_wild )
$wild = 'trailing';
else
$wild = false;
if ( $wild )
$search = trim($search, '*');
$search_columns = array();
if ( $qv['search_columns'] )
$search_columns = array_intersect( $qv['search_columns'], array( 'ID', 'user_login', 'user_email', 'user_url', 'user_nicename' ) );
if ( ! $search_columns ) {
if ( false !== strpos( $search, '@') )
$search_columns = array('user_email');
elseif ( is_numeric($search) )
$search_columns = array('user_login', 'ID');
elseif ( preg_match('|^https?://|', $search) && ! ( is_multisite() && wp_is_large_network( 'users' ) ) )
$search_columns = array('user_url');
else
$search_columns = array('user_login', 'user_url', 'user_email', 'user_nicename', 'display_name');
}
/**
* Filter the columns to search in a WP_User_Query search.
*
* The default columns depend on the search term, and include 'user_email',
* 'user_login', 'ID', 'user_url', 'display_name', and 'user_nicename'.
*
* @since 3.6.0
*
* @param array $search_columns Array of column names to be searched.
* @param string $search Text being searched.
* @param WP_User_Query $this The current WP_User_Query instance.
*/
$search_columns = apply_filters( 'user_search_columns', $search_columns, $search, $this );
$this->query_where .= $this->get_search_sql( $search, $search_columns, $wild );
}
if ( ! empty( $include ) ) {
// Sanitized earlier.
$ids = implode( ',', $include );
$this->query_where .= " AND $wpdb->users.ID IN ($ids)";
} elseif ( ! empty( $qv['exclude'] ) ) {
$ids = implode( ',', wp_parse_id_list( $qv['exclude'] ) );
$this->query_where .= " AND $wpdb->users.ID NOT IN ($ids)";
}
// Date queries are allowed for the user_registered field.
if ( ! empty( $qv['date_query'] ) && is_array( $qv['date_query'] ) ) {
$date_query = new WP_Date_Query( $qv['date_query'], 'user_registered' );
$this->query_where .= $date_query->get_sql();
}
/**
* Fires after the WP_User_Query has been parsed, and before
* the query is executed.
*
* The passed WP_User_Query object contains SQL parts formed
* from parsing the given query.
*
* @since 3.1.0
*
* @param WP_User_Query $this The current WP_User_Query instance,
* passed by reference.
*/
do_action_ref_array( 'pre_user_query', array( &$this ) );
}
/**
* Execute the query, with the current variables.
*
* @since 3.1.0
*
* @global wpdb $wpdb WordPress database abstraction object.
*/
public function query() {
global $wpdb;
$qv =& $this->query_vars;
$this->request = "SELECT $this->query_fields $this->query_from $this->query_where $this->query_orderby $this->query_limit";
if ( is_array( $qv['fields'] ) || 'all' == $qv['fields'] ) {
$this->results = $wpdb->get_results( $this->request );
} else {
$this->results = $wpdb->get_col( $this->request );
}
/**
* Filter SELECT FOUND_ROWS() query for the current WP_User_Query instance.
*
* @since 3.2.0
*
* @global wpdb $wpdb WordPress database abstraction object.
*
* @param string $sql The SELECT FOUND_ROWS() query for the current WP_User_Query.
*/
if ( isset( $qv['count_total'] ) && $qv['count_total'] )
$this->total_users = $wpdb->get_var( apply_filters( 'found_users_query', 'SELECT FOUND_ROWS()' ) );
if ( !$this->results )
return;
if ( 'all_with_meta' == $qv['fields'] ) {
cache_users( $this->results );
$r = array();
foreach ( $this->results as $userid )
$r[ $userid ] = new WP_User( $userid, '', $qv['blog_id'] );
$this->results = $r;
} elseif ( 'all' == $qv['fields'] ) {
foreach ( $this->results as $key => $user ) {
$this->results[ $key ] = new WP_User( $user, '', $qv['blog_id'] );
}
}
}
/**
* Retrieve query variable.
*
* @since 3.5.0
* @access public
*
* @param string $query_var Query variable key.
* @return mixed
*/
public function get( $query_var ) {
if ( isset( $this->query_vars[$query_var] ) )
return $this->query_vars[$query_var];
return null;
}
/**
* Set query variable.
*
* @since 3.5.0
* @access public
*
* @param string $query_var Query variable key.
* @param mixed $value Query variable value.
*/
public function set( $query_var, $value ) {
$this->query_vars[$query_var] = $value;
}
/**
* Used internally to generate an SQL string for searching across multiple columns
*
* @access protected
* @since 3.1.0
*
* @global wpdb $wpdb WordPress database abstraction object.
*
* @param string $string
* @param array $cols
* @param bool $wild Whether to allow wildcard searches. Default is false for Network Admin, true for single site.
* Single site allows leading and trailing wildcards, Network Admin only trailing.
* @return string
*/
protected function get_search_sql( $string, $cols, $wild = false ) {
global $wpdb;
$searches = array();
$leading_wild = ( 'leading' == $wild || 'both' == $wild ) ? '%' : '';
$trailing_wild = ( 'trailing' == $wild || 'both' == $wild ) ? '%' : '';
$like = $leading_wild . $wpdb->esc_like( $string ) . $trailing_wild;
foreach ( $cols as $col ) {
if ( 'ID' == $col ) {
$searches[] = $wpdb->prepare( "$col = %s", $string );
} else {
$searches[] = $wpdb->prepare( "$col LIKE %s", $like );
}
}
return ' AND (' . implode(' OR ', $searches) . ')';
}
/**
* Return the list of users.
*
* @since 3.1.0
* @access public
*
* @return array Array of results.
*/
public function get_results() {
return $this->results;
}
/**
* Return the total number of users for the current query.
*
* @since 3.1.0
* @access public
*
* @return int Number of total users.
*/
public function get_total() {
return $this->total_users;
}
/**
* Parse and sanitize 'orderby' keys passed to the user query.
*
* @since 4.2.0
* @access protected
*
* @global wpdb $wpdb WordPress database abstraction object.
*
* @param string $orderby Alias for the field to order by.
* @return string Value to used in the ORDER clause, if `$orderby` is valid.
*/
protected function parse_orderby( $orderby ) {
global $wpdb;
$meta_query_clauses = $this->meta_query->get_clauses();
$_orderby = '';
if ( in_array( $orderby, array( 'login', 'nicename', 'email', 'url', 'registered' ) ) ) {
$_orderby = 'user_' . $orderby;
} elseif ( in_array( $orderby, array( 'user_login', 'user_nicename', 'user_email', 'user_url', 'user_registered' ) ) ) {
$_orderby = $orderby;
} elseif ( 'name' == $orderby || 'display_name' == $orderby ) {
$_orderby = 'display_name';
} elseif ( 'post_count' == $orderby ) {
// todo: avoid the JOIN
$where = get_posts_by_author_sql( 'post' );
$this->query_from .= " LEFT OUTER JOIN (
SELECT post_author, COUNT(*) as post_count
FROM $wpdb->posts
$where
GROUP BY post_author
) p ON ({$wpdb->users}.ID = p.post_author)
";
$_orderby = 'post_count';
} elseif ( 'ID' == $orderby || 'id' == $orderby ) {
$_orderby = 'ID';
} elseif ( 'meta_value' == $orderby || $this->get( 'meta_key' ) == $orderby ) {
$_orderby = "$wpdb->usermeta.meta_value";
} elseif ( 'meta_value_num' == $orderby ) {
$_orderby = "$wpdb->usermeta.meta_value+0";
} elseif ( 'include' === $orderby && ! empty( $this->query_vars['include'] ) ) {
$include = wp_parse_id_list( $this->query_vars['include'] );
$include_sql = implode( ',', $include );
$_orderby = "FIELD( $wpdb->users.ID, $include_sql )";
} elseif ( isset( $meta_query_clauses[ $orderby ] ) ) {
$meta_clause = $meta_query_clauses[ $orderby ];
$_orderby = sprintf( "CAST(%s.meta_value AS %s)", esc_sql( $meta_clause['alias'] ), esc_sql( $meta_clause['cast'] ) );
}
return $_orderby;
}
/**
* Parse an 'order' query variable and cast it to ASC or DESC as necessary.
*
* @since 4.2.0
* @access protected
*
* @param string $order The 'order' query variable.
* @return string The sanitized 'order' query variable.
*/
protected function parse_order( $order ) {
if ( ! is_string( $order ) || empty( $order ) ) {
return 'DESC';
}
if ( 'ASC' === strtoupper( $order ) ) {
return 'ASC';
} else {
return 'DESC';
}
}
/**
* Make private properties readable for backwards compatibility.
*
* @since 4.0.0
* @access public
*
* @param string $name Property to get.
* @return mixed Property.
*/
public function __get( $name ) {
if ( in_array( $name, $this->compat_fields ) ) {
return $this->$name;
}
}
/**
* Make private properties settable for backwards compatibility.
*
* @since 4.0.0
* @access public
*
* @param string $name Property to check if set.
* @param mixed $value Property value.
* @return mixed Newly-set property.
*/
public function __set( $name, $value ) {
if ( in_array( $name, $this->compat_fields ) ) {
return $this->$name = $value;
}
}
/**
* Make private properties checkable for backwards compatibility.
*
* @since 4.0.0
* @access public
*
* @param string $name Property to check if set.
* @return bool Whether the property is set.
*/
public function __isset( $name ) {
if ( in_array( $name, $this->compat_fields ) ) {
return isset( $this->$name );
}
}
/**
* Make private properties un-settable for backwards compatibility.
*
* @since 4.0.0
* @access public
*
* @param string $name Property to unset.
*/
public function __unset( $name ) {
if ( in_array( $name, $this->compat_fields ) ) {
unset( $this->$name );
}
}
/**
* Make private/protected methods readable for backwards compatibility.
*
* @since 4.0.0
* @access public
*
* @param callable $name Method to call.
* @param array $arguments Arguments to pass when calling.
* @return mixed Return value of the callback, false otherwise.
*/
public function __call( $name, $arguments ) {
if ( 'get_search_sql' === $name ) {
return call_user_func_array( array( $this, $name ), $arguments );
}
return false;
}
}
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