<?php
/**
- * WP_Date_Query will generate a MySQL WHERE clause for the specified date-based parameters.
+ * Class for generating SQL clauses that filter a primary query according to date.
*
- * Initialize the class by passing an array of arrays of parameters.
+ * `WP_Date_Query` is a helper that allows primary query classes, such as {@see WP_Query},
+ * to filter their results by date columns, by generating `WHERE` subclauses to be attached
+ * to the primary SQL query string.
+ *
+ * Attempting to filter by an invalid date value (eg month=13) will generate SQL that will
+ * return no results. In these cases, a _doing_it_wrong() error notice is also thrown.
+ * See {@link WP_Date_Query::validate_date_values()}.
*
* @link http://codex.wordpress.org/Function_Reference/WP_Query Codex page.
*
*/
class WP_Date_Query {
/**
- * List of date queries.
+ * Array of date queries.
+ *
+ * See {@see WP_Date_Query::__construct()} for information on date query arguments.
*
* @since 3.7.0
* @access public
public $queries = array();
/**
- * The relation between the queries. Can be either 'AND' or 'OR' and can be changed via the query arguments.
+ * The default relation between top-level queries. Can be either 'AND' or 'OR'.
*
* @since 3.7.0
* @access public
*/
public $compare = '=';
+ /**
+ * Supported time-related parameter keys.
+ *
+ * @since 4.1.0
+ * @access public
+ * @var array
+ */
+ public $time_keys = array( 'after', 'before', 'year', 'month', 'monthnum', 'week', 'w', 'dayofyear', 'day', 'dayofweek', 'dayofweek_iso', 'hour', 'minute', 'second' );
+
/**
* Constructor.
*
+ * @since 3.7.0
+ * @since 4.0.0 The $inclusive logic was updated to include all times within the date range.
+ * @since 4.1.0 Introduced 'dayofweek_iso' time type parameter.
+ * @access public
+ *
* @param array $date_query {
- * One or more associative arrays of date query parameters.
+ * Array of date query clauses.
*
* @type array {
* @type string $column Optional. The column to query against. If undefined, inherits the value of
* 'post_date_gmt', 'post_modified','post_modified_gmt', 'comment_date',
* 'comment_date_gmt'.
* @type string $compare Optional. The comparison operator.
- * Default '='. Accepts '=', '!=', '>', '>=', '<', '<=', 'IN', 'NOT IN',
+ * Accepts '=', '!=', '>', '>=', '<', '<=', 'IN', 'NOT IN'. Default '='.
* 'BETWEEN', 'NOT BETWEEN'.
- * @type string $relation Optional. The boolean relationship between the date queryies.
- * Default 'OR'. Accepts 'OR', 'AND'.
+ * @type string $relation Optional. The boolean relationship between the date queries.
+ * Accepts 'OR', 'AND'. Default 'OR'.
* @type array {
+ * Optional. An array of first-order clause parameters, or another fully-formed date query.
+ *
* @type string|array $before Optional. Date to retrieve posts before. Accepts strtotime()-compatible
* string, or array of 'year', 'month', 'day' values. {
*
* @type string $day Optional when passing array.The day of the month.
* Default (string:empty)|(array:1). Accepts numbers 1-31.
* }
- * @type string|array $after Optional. Date to retrieve posts before. Accepts strtotime()-compatible
+ * @type string|array $after Optional. Date to retrieve posts after. Accepts strtotime()-compatible
* string, or array of 'year', 'month', 'day' values. {
*
* @type string $year The four-digit year. Default empty. Accepts any four-digit year.
* Default (string:empty)|(array:last day of month). Accepts numbers 1-31.
* }
* @type string $column Optional. Used to add a clause comparing a column other than the column
- * specified in the top-level $column paramater. Default is the value
+ * specified in the top-level $column parameter. Default is the value
* of top-level $column. Accepts 'post_date', 'post_date_gmt',
* 'post_modified', 'post_modified_gmt', 'comment_date', 'comment_date_gmt'.
- * @type string $compare Optional. The comparison operator. Default '='. Accepts '=', '!=',
- * '>', '>=', '<', '<=', 'IN', 'NOT IN', 'BETWEEN', 'NOT BETWEEN'.
- * @type bool $inclusive Optional. Include results from dates specified in 'before' or 'after'.
- * Default. Accepts.
- * @type int $year Optional. The four-digit near number. Default empty. Accepts any
- * four-digit year.
- * @type int $month Optional. The two-digit month number. Default empty. Accepts numbers 1-12.
- * @type int $week Optional. The week number of the year. Default empty. Accepts numbers 0-53.
- * @type int $day Optional. The day of the month. Default empty. Accepts numbers 1-31.
- * @type int $hour Optional. The hour of the day. Default empty. Accepts numbers 0-23.
- * @type int $minute Optional. The minute of the hour. Default empty. Accepts numbers 0-60.
- * @type int $second Optional. The second of the minute. Default empty. Accepts numbers 0-60.
+ * @type string $compare Optional. The comparison operator. Default '='.
+ * Accepts '=', '!=', '>', '>=', '<', '<=', 'IN', 'NOT IN',
+ * 'BETWEEN', 'NOT BETWEEN'.
+ * @type bool $inclusive Optional. Include results from dates specified in 'before' or
+ * 'after'. Default false.
+ * @type int $year Optional. The four-digit year number. Default empty. Accepts
+ * any four-digit year.
+ * @type int $month Optional. The two-digit month number. Default empty.
+ * Accepts numbers 1-12.
+ * @type int $week Optional. The week number of the year. Default empty.
+ * Accepts numbers 0-53.
+ * @type int $dayofyear Optional. The day number of the year. Default empty.
+ * Accepts numbers 1-366.
+ * @type int $day Optional. The day of the month. Default empty.
+ * Accepts numbers 1-31.
+ * @type int $dayofweek Optional. The day number of the week. Default empty.
+ * Accepts numbers 1-7 (1 is Sunday).
+ * @type int $dayofweek_iso Optional. The day number of the week (ISO). Accepts numbers 1-7
+ * (1 is Monday). Default empty.
+ * @type int $hour Optional. The hour of the day. Default empty. Accepts numbers 0-23.
+ * @type int $minute Optional. The minute of the hour. Default empty. Accepts
+ * numbers 0-60.
+ * @type int $second Optional. The second of the minute. Default empty.
+ * Accepts numbers 0-60.
* }
* }
* }
* Accepts 'post_date', 'post_date_gmt', 'post_modified', 'post_modified_gmt',
* 'comment_date', 'comment_date_gmt'.
*/
- function __construct( $date_query, $default_column = 'post_date' ) {
- if ( empty( $date_query ) || ! is_array( $date_query ) )
- return;
+ public function __construct( $date_query, $default_column = 'post_date' ) {
- if ( isset( $date_query['relation'] ) && strtoupper( $date_query['relation'] ) == 'OR' )
+ if ( isset( $date_query['relation'] ) && 'OR' === strtoupper( $date_query['relation'] ) ) {
$this->relation = 'OR';
- else
+ } else {
$this->relation = 'AND';
+ }
- if ( ! empty( $date_query['column'] ) )
- $this->column = esc_sql( $date_query['column'] );
- else
- $this->column = esc_sql( $default_column );
+ if ( ! is_array( $date_query ) ) {
+ return;
+ }
+
+ // Support for passing time-based keys in the top level of the $date_query array.
+ if ( ! isset( $date_query[0] ) && ! empty( $date_query ) ) {
+ $date_query = array( $date_query );
+ }
+
+ if ( empty( $date_query ) ) {
+ return;
+ }
+
+ if ( ! empty( $date_query['column'] ) ) {
+ $date_query['column'] = esc_sql( $date_query['column'] );
+ } else {
+ $date_query['column'] = esc_sql( $default_column );
+ }
$this->column = $this->validate_column( $this->column );
$this->compare = $this->get_compare( $date_query );
- // If an array of arrays wasn't passed, fix it
- if ( ! isset( $date_query[0] ) )
- $date_query = array( $date_query );
+ $this->queries = $this->sanitize_query( $date_query );
- $this->queries = array();
- foreach ( $date_query as $key => $query ) {
- if ( ! is_array( $query ) )
+ return;
+ }
+
+ /**
+ * Recursive-friendly query sanitizer.
+ *
+ * Ensures that each query-level clause has a 'relation' key, and that
+ * each first-order clause contains all the necessary keys from
+ * `$defaults`.
+ *
+ * @since 4.1.0
+ * @access public
+ *
+ * @param array $queries
+ * @param array $parent_query
+ *
+ * @return array Sanitized queries.
+ */
+ public function sanitize_query( $queries, $parent_query = null ) {
+ $cleaned_query = array();
+
+ $defaults = array(
+ 'column' => 'post_date',
+ 'compare' => '=',
+ 'relation' => 'AND',
+ );
+
+ // Numeric keys should always have array values.
+ foreach ( $queries as $qkey => $qvalue ) {
+ if ( is_numeric( $qkey ) && ! is_array( $qvalue ) ) {
+ unset( $queries[ $qkey ] );
+ }
+ }
+
+ // Each query should have a value for each default key. Inherit from the parent when possible.
+ foreach ( $defaults as $dkey => $dvalue ) {
+ if ( isset( $queries[ $dkey ] ) ) {
continue;
+ }
- $this->queries[$key] = $query;
+ if ( isset( $parent_query[ $dkey ] ) ) {
+ $queries[ $dkey ] = $parent_query[ $dkey ];
+ } else {
+ $queries[ $dkey ] = $dvalue;
+ }
}
+
+ // Validate the dates passed in the query.
+ if ( $this->is_first_order_clause( $queries ) ) {
+ $this->validate_date_values( $queries );
+ }
+
+ foreach ( $queries as $key => $q ) {
+ if ( ! is_array( $q ) || in_array( $key, $this->time_keys, true ) ) {
+ // This is a first-order query. Trust the values and sanitize when building SQL.
+ $cleaned_query[ $key ] = $q;
+ } else {
+ // Any array without a time key is another query, so we recurse.
+ $cleaned_query[] = $this->sanitize_query( $q, $queries );
+ }
+ }
+
+ return $cleaned_query;
+ }
+
+ /**
+ * Determine whether this is a first-order clause.
+ *
+ * Checks to see if the current clause has any time-related keys.
+ * If so, it's first-order.
+ *
+ * @param array $query Query clause.
+ * @return bool True if this is a first-order clause.
+ */
+ protected function is_first_order_clause( $query ) {
+ $time_keys = array_intersect( $this->time_keys, array_keys( $query ) );
+ return ! empty( $time_keys );
}
/**
* @since 3.7.0
* @access public
*
- * @param array $query A date query or a date subquery
- * @return string The comparison operator
+ * @param array $query A date query or a date subquery.
+ * @return string The comparison operator.
*/
public function get_compare( $query ) {
if ( ! empty( $query['compare'] ) && in_array( $query['compare'], array( '=', '!=', '>', '>=', '<', '<=', 'IN', 'NOT IN', 'BETWEEN', 'NOT BETWEEN' ) ) )
return $this->compare;
}
+ /**
+ * Validates the given date_query values and triggers errors if something is not valid.
+ *
+ * Note that date queries with invalid date ranges are allowed to
+ * continue (though of course no items will be found for impossible dates).
+ * This method only generates debug notices for these cases.
+ *
+ * @since 4.1.0
+ * @access public
+ *
+ * @param array $date_query The date_query array.
+ * @return bool True if all values in the query are valid, false if one or more fail.
+ */
+ public function validate_date_values( $date_query = array() ) {
+ if ( empty( $date_query ) ) {
+ return false;
+ }
+
+ $valid = true;
+
+ /*
+ * Validate 'before' and 'after' up front, then let the
+ * validation routine continue to be sure that all invalid
+ * values generate errors too.
+ */
+ if ( array_key_exists( 'before', $date_query ) && is_array( $date_query['before'] ) ){
+ $valid = $this->validate_date_values( $date_query['before'] );
+ }
+
+ if ( array_key_exists( 'after', $date_query ) && is_array( $date_query['after'] ) ){
+ $valid = $this->validate_date_values( $date_query['after'] );
+ }
+
+ // Array containing all min-max checks.
+ $min_max_checks = array();
+
+ // Days per year.
+ if ( array_key_exists( 'year', $date_query ) ) {
+ /*
+ * If a year exists in the date query, we can use it to get the days.
+ * If multiple years are provided (as in a BETWEEN), use the first one.
+ */
+ if ( is_array( $date_query['year'] ) ) {
+ $_year = reset( $date_query['year'] );
+ } else {
+ $_year = $date_query['year'];
+ }
+
+ $max_days_of_year = date( 'z', mktime( 0, 0, 0, 12, 31, $_year ) ) + 1;
+ } else {
+ // otherwise we use the max of 366 (leap-year)
+ $max_days_of_year = 366;
+ }
+
+ $min_max_checks['dayofyear'] = array(
+ 'min' => 1,
+ 'max' => $max_days_of_year
+ );
+
+ // Days per week.
+ $min_max_checks['dayofweek'] = array(
+ 'min' => 1,
+ 'max' => 7
+ );
+
+ // Days per week.
+ $min_max_checks['dayofweek_iso'] = array(
+ 'min' => 1,
+ 'max' => 7
+ );
+
+ // Months per year.
+ $min_max_checks['month'] = array(
+ 'min' => 1,
+ 'max' => 12
+ );
+
+ // Weeks per year.
+ if ( isset( $_year ) ) {
+ // If we have a specific year, use it to calculate number of weeks.
+ $date = new DateTime();
+ $date->setISODate( $_year, 53 );
+ $week_count = $date->format( "W" ) === "53" ? 53 : 52;
+
+ } else {
+ // Otherwise set the week-count to a maximum of 53.
+ $week_count = 53;
+ }
+
+ $min_max_checks['week'] = array(
+ 'min' => 1,
+ 'max' => $week_count
+ );
+
+ // Days per month.
+ $min_max_checks['day'] = array(
+ 'min' => 1,
+ 'max' => 31
+ );
+
+ // Hours per day.
+ $min_max_checks['hour'] = array(
+ 'min' => 0,
+ 'max' => 23
+ );
+
+ // Minutes per hour.
+ $min_max_checks['minute'] = array(
+ 'min' => 0,
+ 'max' => 59
+ );
+
+ // Seconds per minute.
+ $min_max_checks['second'] = array(
+ 'min' => 0,
+ 'max' => 59
+ );
+
+ // Concatenate and throw a notice for each invalid value.
+ foreach ( $min_max_checks as $key => $check ) {
+ if ( ! array_key_exists( $key, $date_query ) ) {
+ continue;
+ }
+
+ // Throw a notice for each failing value.
+ $is_between = true;
+ foreach ( (array) $date_query[ $key ] as $_value ) {
+ $is_between = $_value >= $check['min'] && $_value <= $check['max'];
+
+ if ( ! is_numeric( $_value ) || ! $is_between ) {
+ $error = sprintf(
+ /* translators: Date query invalid date message: 1: invalid value, 2: type of value, 3: minimum valid value, 4: maximum valid value */
+ __( 'Invalid value %1$s for %2$s. Expected value should be between %3$s and %4$s.' ),
+ '<code>' . esc_html( $_value ) . '</code>',
+ '<code>' . esc_html( $key ) . '</code>',
+ '<code>' . esc_html( $check['min'] ) . '</code>',
+ '<code>' . esc_html( $check['max'] ) . '</code>'
+ );
+
+ _doing_it_wrong( __CLASS__, $error, '4.1.0' );
+
+ $valid = false;
+ }
+ }
+ }
+
+ // If we already have invalid date messages, don't bother running through checkdate().
+ if ( ! $valid ) {
+ return $valid;
+ }
+
+ $day_month_year_error_msg = '';
+
+ $day_exists = array_key_exists( 'day', $date_query ) && is_numeric( $date_query['day'] );
+ $month_exists = array_key_exists( 'month', $date_query ) && is_numeric( $date_query['month'] );
+ $year_exists = array_key_exists( 'year', $date_query ) && is_numeric( $date_query['year'] );
+
+ if ( $day_exists && $month_exists && $year_exists ) {
+ // 1. Checking day, month, year combination.
+ if ( ! wp_checkdate( $date_query['month'], $date_query['day'], $date_query['year'], sprintf( '%s-%s-%s', $date_query['year'], $date_query['month'], $date_query['day'] ) ) ) {
+ /* translators: 1: year, 2: month, 3: day of month */
+ $day_month_year_error_msg = sprintf(
+ __( 'The following values do not describe a valid date: year %1$s, month %2$s, day %3$s.' ),
+ '<code>' . esc_html( $date_query['year'] ) . '</code>',
+ '<code>' . esc_html( $date_query['month'] ) . '</code>',
+ '<code>' . esc_html( $date_query['day'] ) . '</code>'
+ );
+
+ $valid = false;
+ }
+
+ } else if ( $day_exists && $month_exists ) {
+ /*
+ * 2. checking day, month combination
+ * We use 2012 because, as a leap year, it's the most permissive.
+ */
+ if ( ! wp_checkdate( $date_query['month'], $date_query['day'], 2012, sprintf( '2012-%s-%s', $date_query['month'], $date_query['day'] ) ) ) {
+ /* translators: 1: month, 2: day of month */
+ $day_month_year_error_msg = sprintf(
+ __( 'The following values do not describe a valid date: month %1$s, day %2$s.' ),
+ '<code>' . esc_html( $date_query['month'] ) . '</code>',
+ '<code>' . esc_html( $date_query['day'] ) . '</code>'
+ );
+
+ $valid = false;
+ }
+ }
+
+ if ( ! empty( $day_month_year_error_msg ) ) {
+ _doing_it_wrong( __CLASS__, $day_month_year_error_msg, '4.1.0' );
+ }
+
+ return $valid;
+ }
+
/**
* Validates a column name parameter.
*
+ * Column names without a table prefix (like 'post_date') are checked against a whitelist of
+ * known tables, and then, if found, have a table prefix (such as 'wp_posts.') prepended.
+ * Prefixed column names (such as 'wp_posts.post_date') bypass this whitelist check,
+ * and are only sanitized to remove illegal characters.
+ *
* @since 3.7.0
* @access public
*
* @return string A validated column name value.
*/
public function validate_column( $column ) {
+ global $wpdb;
+
$valid_columns = array(
'post_date', 'post_date_gmt', 'post_modified',
- 'post_modified_gmt', 'comment_date', 'comment_date_gmt'
+ 'post_modified_gmt', 'comment_date', 'comment_date_gmt',
+ 'user_registered',
);
- /**
- * Filter the list of valid date query columns.
- *
- * @since 3.7.0
- *
- * @param array $valid_columns An array of valid date query columns. Defaults are 'post_date', 'post_date_gmt',
- * 'post_modified', 'post_modified_gmt', 'comment_date', 'comment_date_gmt'
- */
- if ( ! in_array( $column, apply_filters( 'date_query_valid_columns', $valid_columns ) ) )
- $column = 'post_date';
- return $column;
+ // Attempt to detect a table prefix.
+ if ( false === strpos( $column, '.' ) ) {
+ /**
+ * Filter the list of valid date query columns.
+ *
+ * @since 3.7.0
+ * @since 4.1.0 Added 'user_registered' to the default recognized columns.
+ *
+ * @param array $valid_columns An array of valid date query columns. Defaults
+ * are 'post_date', 'post_date_gmt', 'post_modified',
+ * 'post_modified_gmt', 'comment_date', 'comment_date_gmt',
+ * 'user_registered'
+ */
+ if ( ! in_array( $column, apply_filters( 'date_query_valid_columns', $valid_columns ) ) ) {
+ $column = 'post_date';
+ }
+
+ $known_columns = array(
+ $wpdb->posts => array(
+ 'post_date',
+ 'post_date_gmt',
+ 'post_modified',
+ 'post_modified_gmt',
+ ),
+ $wpdb->comments => array(
+ 'comment_date',
+ 'comment_date_gmt',
+ ),
+ $wpdb->users => array(
+ 'user_registered',
+ ),
+ );
+
+ // If it's a known column name, add the appropriate table prefix.
+ foreach ( $known_columns as $table_name => $table_columns ) {
+ if ( in_array( $column, $table_columns ) ) {
+ $column = $table_name . '.' . $column;
+ break;
+ }
+ }
+
+ }
+
+ // Remove unsafe characters.
+ return preg_replace( '/[^a-zA-Z0-9_$\.]/', '', $column );
}
/**
- * Turns an array of date query parameters into a MySQL string.
+ * Generate WHERE clause to be appended to a main query.
*
* @since 3.7.0
* @access public
*
- * @return string MySQL WHERE parameters
+ * @return string MySQL WHERE clause.
*/
public function get_sql() {
- // The parts of the final query
- $where = array();
-
- foreach ( $this->queries as $key => $query ) {
- $where_parts = $this->get_sql_for_subquery( $query );
- if ( $where_parts ) {
- // Combine the parts of this subquery into a single string
- $where[ $key ] = '( ' . implode( ' AND ', $where_parts ) . ' )';
- }
- }
+ $sql = $this->get_sql_clauses();
- // Combine the subquery strings into a single string
- if ( $where )
- $where = ' AND ( ' . implode( " {$this->relation} ", $where ) . ' )';
- else
- $where = '';
+ $where = $sql['where'];
/**
* Filter the date query WHERE clause.
}
/**
- * Turns a single date subquery into pieces for a WHERE clause.
+ * Generate SQL clauses to be appended to a main query.
*
- * @since 3.7.0
- * return array
+ * Called by the public {@see WP_Date_Query::get_sql()}, this method
+ * is abstracted out to maintain parity with the other Query classes.
+ *
+ * @since 4.1.0
+ * @access protected
+ *
+ * @return array {
+ * Array containing JOIN and WHERE SQL clauses to append to the main query.
+ *
+ * @type string $join SQL fragment to append to the main JOIN clause.
+ * @type string $where SQL fragment to append to the main WHERE clause.
+ * }
+ */
+ protected function get_sql_clauses() {
+ $sql = $this->get_sql_for_query( $this->queries );
+
+ if ( ! empty( $sql['where'] ) ) {
+ $sql['where'] = ' AND ' . $sql['where'];
+ }
+
+ return $sql;
+ }
+
+ /**
+ * Generate SQL clauses for a single query array.
+ *
+ * If nested subqueries are found, this method recurses the tree to
+ * produce the properly nested SQL.
+ *
+ * @since 4.1.0
+ * @access protected
+ *
+ * @param array $query Query to parse.
+ * @param int $depth Optional. Number of tree levels deep we currently are.
+ * Used to calculate indentation. Default 0.
+ * @return array {
+ * Array containing JOIN and WHERE SQL clauses to append to a single query array.
+ *
+ * @type string $join SQL fragment to append to the main JOIN clause.
+ * @type string $where SQL fragment to append to the main WHERE clause.
+ * }
+ */
+ protected function get_sql_for_query( $query, $depth = 0 ) {
+ $sql_chunks = array(
+ 'join' => array(),
+ 'where' => array(),
+ );
+
+ $sql = array(
+ 'join' => '',
+ 'where' => '',
+ );
+
+ $indent = '';
+ for ( $i = 0; $i < $depth; $i++ ) {
+ $indent .= " ";
+ }
+
+ foreach ( $query as $key => $clause ) {
+ if ( 'relation' === $key ) {
+ $relation = $query['relation'];
+ } else if ( is_array( $clause ) ) {
+
+ // This is a first-order clause.
+ if ( $this->is_first_order_clause( $clause ) ) {
+ $clause_sql = $this->get_sql_for_clause( $clause, $query );
+
+ $where_count = count( $clause_sql['where'] );
+ if ( ! $where_count ) {
+ $sql_chunks['where'][] = '';
+ } else if ( 1 === $where_count ) {
+ $sql_chunks['where'][] = $clause_sql['where'][0];
+ } else {
+ $sql_chunks['where'][] = '( ' . implode( ' AND ', $clause_sql['where'] ) . ' )';
+ }
+
+ $sql_chunks['join'] = array_merge( $sql_chunks['join'], $clause_sql['join'] );
+ // This is a subquery, so we recurse.
+ } else {
+ $clause_sql = $this->get_sql_for_query( $clause, $depth + 1 );
+
+ $sql_chunks['where'][] = $clause_sql['where'];
+ $sql_chunks['join'][] = $clause_sql['join'];
+ }
+ }
+ }
+
+ // Filter to remove empties.
+ $sql_chunks['join'] = array_filter( $sql_chunks['join'] );
+ $sql_chunks['where'] = array_filter( $sql_chunks['where'] );
+
+ if ( empty( $relation ) ) {
+ $relation = 'AND';
+ }
+
+ // Filter duplicate JOIN clauses and combine into a single string.
+ if ( ! empty( $sql_chunks['join'] ) ) {
+ $sql['join'] = implode( ' ', array_unique( $sql_chunks['join'] ) );
+ }
+
+ // Generate a single WHERE clause with proper brackets and indentation.
+ if ( ! empty( $sql_chunks['where'] ) ) {
+ $sql['where'] = '( ' . "\n " . $indent . implode( ' ' . "\n " . $indent . $relation . ' ' . "\n " . $indent, $sql_chunks['where'] ) . "\n" . $indent . ')';
+ }
+
+ return $sql;
+ }
+
+ /**
+ * Turns a single date clause into pieces for a WHERE clause.
+ *
+ * A wrapper for get_sql_for_clause(), included here for backward
+ * compatibility while retaining the naming convention across Query classes.
+ *
+ * @since 3.7.0
+ * @access protected
+ *
+ * @param array $query Date query arguments.
+ * @return array {
+ * Array containing JOIN and WHERE SQL clauses to append to the main query.
+ *
+ * @type string $join SQL fragment to append to the main JOIN clause.
+ * @type string $where SQL fragment to append to the main WHERE clause.
+ * }
*/
protected function get_sql_for_subquery( $query ) {
+ return $this->get_sql_for_clause( $query, '' );
+ }
+
+ /**
+ * Turns a first-order date query into SQL for a WHERE clause.
+ *
+ * @since 4.1.0
+ * @access protected
+ *
+ * @param array $query Date query clause.
+ * @param array $parent_query Parent query of the current date query.
+ * @return array {
+ * Array containing JOIN and WHERE SQL clauses to append to the main query.
+ *
+ * @type string $join SQL fragment to append to the main JOIN clause.
+ * @type string $where SQL fragment to append to the main WHERE clause.
+ * }
+ */
+ protected function get_sql_for_clause( $query, $parent_query ) {
global $wpdb;
- // The sub-parts of a $where part
+ // The sub-parts of a $where part.
$where_parts = array();
$column = ( ! empty( $query['column'] ) ) ? esc_sql( $query['column'] ) : $this->column;
$compare = $this->get_compare( $query );
+ $inclusive = ! empty( $query['inclusive'] );
+
+ // Assign greater- and less-than values.
$lt = '<';
$gt = '>';
- if ( ! empty( $query['inclusive'] ) ) {
+
+ if ( $inclusive ) {
$lt .= '=';
$gt .= '=';
}
- // Range queries
+ // Range queries.
if ( ! empty( $query['after'] ) )
- $where_parts[] = $wpdb->prepare( "$column $gt %s", $this->build_mysql_datetime( $query['after'], true ) );
+ $where_parts[] = $wpdb->prepare( "$column $gt %s", $this->build_mysql_datetime( $query['after'], ! $inclusive ) );
if ( ! empty( $query['before'] ) )
- $where_parts[] = $wpdb->prepare( "$column $lt %s", $this->build_mysql_datetime( $query['before'], false ) );
+ $where_parts[] = $wpdb->prepare( "$column $lt %s", $this->build_mysql_datetime( $query['before'], $inclusive ) );
- // Specific value queries
+ // Specific value queries.
if ( isset( $query['year'] ) && $value = $this->build_value( $compare, $query['year'] ) )
$where_parts[] = "YEAR( $column ) $compare $value";
if ( isset( $query['month'] ) && $value = $this->build_value( $compare, $query['month'] ) )
$where_parts[] = "MONTH( $column ) $compare $value";
-
- // Legacy
- if ( isset( $query['monthnum'] ) && $value = $this->build_value( $compare, $query['monthnum'] ) )
+ else if ( isset( $query['monthnum'] ) && $value = $this->build_value( $compare, $query['monthnum'] ) )
$where_parts[] = "MONTH( $column ) $compare $value";
if ( isset( $query['week'] ) && false !== ( $value = $this->build_value( $compare, $query['week'] ) ) )
$where_parts[] = _wp_mysql_week( $column ) . " $compare $value";
-
- // Legacy
- if ( isset( $query['w'] ) && false !== ( $value = $this->build_value( $compare, $query['w'] ) ) )
+ else if ( isset( $query['w'] ) && false !== ( $value = $this->build_value( $compare, $query['w'] ) ) )
$where_parts[] = _wp_mysql_week( $column ) . " $compare $value";
if ( isset( $query['dayofyear'] ) && $value = $this->build_value( $compare, $query['dayofyear'] ) )
if ( isset( $query['dayofweek'] ) && $value = $this->build_value( $compare, $query['dayofweek'] ) )
$where_parts[] = "DAYOFWEEK( $column ) $compare $value";
+ if ( isset( $query['dayofweek_iso'] ) && $value = $this->build_value( $compare, $query['dayofweek_iso'] ) )
+ $where_parts[] = "WEEKDAY( $column ) + 1 $compare $value";
+
if ( isset( $query['hour'] ) || isset( $query['minute'] ) || isset( $query['second'] ) ) {
- // Avoid notices
+ // Avoid notices.
foreach ( array( 'hour', 'minute', 'second' ) as $unit ) {
- if ( ! isset( $query[$unit] ) ) {
- $query[$unit] = null;
+ if ( ! isset( $query[ $unit ] ) ) {
+ $query[ $unit ] = null;
}
}
}
}
- return $where_parts;
+ /*
+ * Return an array of 'join' and 'where' for compatibility
+ * with other query classes.
+ */
+ return array(
+ 'where' => $where_parts,
+ 'join' => array(),
+ );
}
/**
*
* @param string $compare The compare operator to use
* @param string|array $value The value
- * @return string|int|false The value to be used in SQL or false on error.
+ * @return string|false|int The value to be used in SQL or false on error.
*/
public function build_value( $compare, $value ) {
if ( ! isset( $value ) )
switch ( $compare ) {
case 'IN':
case 'NOT IN':
- return '(' . implode( ',', array_map( 'intval', (array) $value ) ) . ')';
+ $value = (array) $value;
+
+ // Remove non-numeric values.
+ $value = array_filter( $value, 'is_numeric' );
+
+ if ( empty( $value ) ) {
+ return false;
+ }
+
+ return '(' . implode( ',', array_map( 'intval', $value ) ) . ')';
case 'BETWEEN':
case 'NOT BETWEEN':
- if ( ! is_array( $value ) || 2 != count( $value ) || ! isset( $value[0] ) || ! isset( $value[1] ) )
+ if ( ! is_array( $value ) || 2 != count( $value ) ) {
$value = array( $value, $value );
+ } else {
+ $value = array_values( $value );
+ }
+
+ // If either value is non-numeric, bail.
+ foreach ( $value as $v ) {
+ if ( ! is_numeric( $v ) ) {
+ return false;
+ }
+ }
$value = array_map( 'intval', $value );
return $value[0] . ' AND ' . $value[1];
default;
+ if ( ! is_numeric( $value ) ) {
+ return false;
+ }
+
return (int) $value;
}
}
* @since 3.7.0
* @access public
*
- * @param string|array $datetime An array of parameters or a strotime() string
- * @param string $default_to Controls what values default to if they are missing from $datetime. Pass "min" or "max".
+ * @param string|array $datetime An array of parameters or a strotime() string
+ * @param bool $default_to_max Whether to round up incomplete dates. Supported by values
+ * of $datetime that are arrays, or string values that are a
+ * subset of MySQL date format ('Y', 'Y-m', 'Y-m-d', 'Y-m-d H:i').
+ * Default: false.
* @return string|false A MySQL format date/time or false on failure
*/
public function build_mysql_datetime( $datetime, $default_to_max = false ) {
$now = current_time( 'timestamp' );
if ( ! is_array( $datetime ) ) {
- // @todo Timezone issues here possibly
- return gmdate( 'Y-m-d H:i:s', strtotime( $datetime, $now ) );
+
+ /*
+ * Try to parse some common date formats, so we can detect
+ * the level of precision and support the 'inclusive' parameter.
+ */
+ if ( preg_match( '/^(\d{4})$/', $datetime, $matches ) ) {
+ // Y
+ $datetime = array(
+ 'year' => intval( $matches[1] ),
+ );
+
+ } else if ( preg_match( '/^(\d{4})\-(\d{2})$/', $datetime, $matches ) ) {
+ // Y-m
+ $datetime = array(
+ 'year' => intval( $matches[1] ),
+ 'month' => intval( $matches[2] ),
+ );
+
+ } else if ( preg_match( '/^(\d{4})\-(\d{2})\-(\d{2})$/', $datetime, $matches ) ) {
+ // Y-m-d
+ $datetime = array(
+ 'year' => intval( $matches[1] ),
+ 'month' => intval( $matches[2] ),
+ 'day' => intval( $matches[3] ),
+ );
+
+ } else if ( preg_match( '/^(\d{4})\-(\d{2})\-(\d{2}) (\d{2}):(\d{2})$/', $datetime, $matches ) ) {
+ // Y-m-d H:i
+ $datetime = array(
+ 'year' => intval( $matches[1] ),
+ 'month' => intval( $matches[2] ),
+ 'day' => intval( $matches[3] ),
+ 'hour' => intval( $matches[4] ),
+ 'minute' => intval( $matches[5] ),
+ );
+ }
+
+ // If no match is found, we don't support default_to_max.
+ if ( ! is_array( $datetime ) ) {
+ // @todo Timezone issues here possibly
+ return gmdate( 'Y-m-d H:i:s', strtotime( $datetime, $now ) );
+ }
}
$datetime = array_map( 'absint', $datetime );
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