: str_replace(): Passing null to parameter #2 ($replace) of type array|string is deprecated in
* @since 4.1.0 Added 'user_registered' to the default recognized columns.
* @since 4.6.0 Added 'registered' and 'last_updated' to the default recognized columns.
* @param string[] $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', 'registered', 'last_updated'.
if ( ! in_array( $column, apply_filters( 'date_query_valid_columns', $valid_columns ), true ) ) {
$wpdb->comments => array(
// 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, true ) ) {
$column = $table_name . '.' . $column;
// Remove unsafe characters.
return preg_replace( '/[^a-zA-Z0-9_$\.]/', '', $column );
* Generates WHERE clause to be appended to a main query.
* @return string MySQL WHERE clause.
public function get_sql() {
$sql = $this->get_sql_clauses();
* Filters the date query WHERE clause.
* @param string $where WHERE clause of the date query.
* @param WP_Date_Query $query The WP_Date_Query instance.
return apply_filters( 'get_date_sql', $where, $this );
* Generates SQL clauses to be appended to a main query.
* Called by the public WP_Date_Query::get_sql(), this method is abstracted
* out to maintain parity with the other Query classes.
* 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'];
* Generates SQL clauses for a single query array.
* If nested subqueries are found, this method recurses the tree to
* produce the properly nested SQL.
* @param array $query Query to parse.
* @param int $depth Optional. Number of tree levels deep we currently are.
* Used to calculate indentation. Default 0.
* 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 ) {
for ( $i = 0; $i < $depth; $i++ ) {
foreach ( $query as $key => $clause ) {
if ( 'relation' === $key ) {
$relation = $query['relation'];
} elseif ( 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'] );
$sql_chunks['where'][] = '';
} elseif ( 1 === $where_count ) {
$sql_chunks['where'][] = $clause_sql['where'][0];
$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.
$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 ) ) {
// 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 . ')';
* 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.
* @param array $query Date query arguments.
* Array containing JOIN and WHERE SQL clauses to append to the main query.
* @type string[] $join Array of SQL fragments to append to the main JOIN clause.
* @type string[] $where Array of SQL fragments 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.
* @global wpdb $wpdb WordPress database abstraction object.
* @param array $query Date query clause.
* @param array $parent_query Parent query of the current date query.
* Array containing JOIN and WHERE SQL clauses to append to the main query.
* @type string[] $join Array of SQL fragments to append to the main JOIN clause.
* @type string[] $where Array of SQL fragments to append to the main WHERE clause.
protected function get_sql_for_clause( $query, $parent_query ) {
// The sub-parts of a $where part.
$column = ( ! empty( $query['column'] ) ) ? esc_sql( $query['column'] ) : $this->column;
$column = $this->validate_column( $column );
$compare = $this->get_compare( $query );
$inclusive = ! empty( $query['inclusive'] );
// Assign greater- and less-than values.
if ( ! empty( $query['after'] ) ) {
$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'], $inclusive ) );
// Specific value queries.
'YEAR' => array( 'year' ),
'MONTH' => array( 'month', 'monthnum' ),
'_wp_mysql_week' => array( 'week', 'w' ),
'DAYOFYEAR' => array( 'dayofyear' ),
'DAYOFMONTH' => array( 'day' ),
'DAYOFWEEK' => array( 'dayofweek' ),
'WEEKDAY' => array( 'dayofweek_iso' ),
// Check of the possible date units and add them to the query.
foreach ( $date_units as $sql_part => $query_parts ) {
foreach ( $query_parts as $query_part ) {
if ( isset( $query[ $query_part ] ) ) {
$value = $this->build_value( $compare, $query[ $query_part ] );
$where_parts[] = _wp_mysql_week( $column ) . " $compare $value";
$where_parts[] = "$sql_part( $column ) + 1 $compare $value";
$where_parts[] = "$sql_part( $column ) $compare $value";
if ( isset( $query['hour'] ) || isset( $query['minute'] ) || isset( $query['second'] ) ) {
foreach ( array( 'hour', 'minute', 'second' ) as $unit ) {
if ( ! isset( $query[ $unit ] ) ) {
$time_query = $this->build_time_query( $column, $compare, $query['hour'], $query['minute'], $query['second'] );
$where_parts[] = $time_query;
* Return an array of 'join' and 'where' for compatibility
* with other query classes.
* Builds and validates a value string based on the comparison operator.
* @param string $compare The compare operator to use.
* @param string|array $value The value.
* @return string|false|int The value to be used in SQL or false on error.
public function build_value( $compare, $value ) {
if ( ! isset( $value ) ) {
// Remove non-numeric values.
$value = array_filter( $value, 'is_numeric' );
return '(' . implode( ',', array_map( 'intval', $value ) ) . ')';
if ( ! is_array( $value ) || 2 !== count( $value ) ) {
$value = array( $value, $value );
$value = array_values( $value );
// If either value is non-numeric, bail.
foreach ( $value as $v ) {
if ( ! is_numeric( $v ) ) {
$value = array_map( 'intval', $value );
return $value[0] . ' AND ' . $value[1];
if ( ! is_numeric( $value ) ) {
* Builds a MySQL format date/time based on some query parameters.
* You can pass an array of values (year, month, etc.) with missing parameter values being defaulted to
* either the maximum or minimum values (controlled by the $default_to parameter). Alternatively you can
* pass a string that will be passed to date_create().
* @param string|array $datetime An array of parameters or a strtotime() 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').
* @return string|false A MySQL format date/time or false on failure.
public function build_mysql_datetime( $datetime, $default_to_max = false ) {
if ( ! is_array( $datetime ) ) {
* Try to parse some common date formats, so we can detect
* the level of precision and support the 'inclusive' parameter.
if ( preg_match( '/^(\d{4})$/', $datetime, $matches ) ) {
'year' => (int) $matches[1],
} elseif ( preg_match( '/^(\d{4})\-(\d{2})$/', $datetime, $matches ) ) {
'year' => (int) $matches[1],
'month' => (int) $matches[2],
} elseif ( preg_match( '/^(\d{4})\-(\d{2})\-(\d{2})$/', $datetime, $matches ) ) {
'year' => (int) $matches[1],
'month' => (int) $matches[2],
'day' => (int) $matches[3],
} elseif ( preg_match( '/^(\d{4})\-(\d{2})\-(\d{2}) (\d{2}):(\d{2})$/', $datetime, $matches ) ) {
'year' => (int) $matches[1],
'month' => (int) $matches[2],
'day' => (int) $matches[3],
'hour' => (int) $matches[4],
'minute' => (int) $matches[5],
// If no match is found, we don't support default_to_max.
if ( ! is_array( $datetime ) ) {
$wp_timezone = wp_timezone();
// Assume local timezone if not provided.
$dt = date_create( $datetime, $wp_timezone );
return gmdate( 'Y-m-d H:i:s', false );
return $dt->setTimezone( $wp_timezone )->format( 'Y-m-d H:i:s' );
$datetime = array_map( 'absint', $datetime );
if ( ! isset( $datetime['year'] ) ) {
$datetime['year'] = current_time( 'Y' );
if ( ! isset( $datetime['month'] ) ) {
$datetime['month'] = ( $default_to_max ) ? 12 : 1;
if ( ! isset( $datetime['day'] ) ) {
$datetime['day'] = ( $default_to_max ) ? (int) gmdate( 't', mktime( 0, 0, 0, $datetime['month'], 1, $datetime['year'] ) ) : 1;
if ( ! isset( $datetime['hour'] ) ) {
$datetime['hour'] = ( $default_to_max ) ? 23 : 0;
if ( ! isset( $datetime['minute'] ) ) {
$datetime['minute'] = ( $default_to_max ) ? 59 : 0;
if ( ! isset( $datetime['second'] ) ) {
$datetime['second'] = ( $default_to_max ) ? 59 : 0;
return sprintf( '%04d-%02d-%02d %02d:%02d:%02d', $datetime['year'], $datetime['month'], $datetime['day'], $datetime['hour'], $datetime['minute'], $datetime['second'] );
* Builds a query string for comparing time values (hour, minute, second).
* If just hour, minute, or second is set than a normal comparison will be done.
* However if multiple values are passed, a pseudo-decimal time will be created
* in order to be able to accurately compare against.
* @global wpdb $wpdb WordPress database abstraction object.
* @param string $column The column to query against. Needs to be pre-validated!
* @param string $compare The comparison operator. Needs to be pre-validated!
* @param int|null $hour Optional. An hour value (0-23).
* @param int|null $minute Optional. A minute value (0-59).
* @param int|null $second Optional. A second value (0-59).
* @return string|false A query part or false on failure.
public function build_time_query( $column, $compare, $hour = null, $minute = null, $second = null ) {
// Have to have at least one.
if ( ! isset( $hour ) && ! isset( $minute ) && ! isset( $second ) ) {
// Complex combined queries aren't supported for multi-value queries.
if ( in_array( $compare, array( 'IN', 'NOT IN', 'BETWEEN', 'NOT BETWEEN' ), true ) ) {
$value = $this->build_value( $compare, $hour );
if ( false !== $value ) {
$return[] = "HOUR( $column ) $compare $value";
$value = $this->build_value( $compare, $minute );
if ( false !== $value ) {
$return[] = "MINUTE( $column ) $compare $value";
$value = $this->build_value( $compare, $second );
if ( false !== $value ) {
It is recommended that you Edit text format, this type of Fix handles quite a lot in one request
