WP_Date_Query{} │ WP 3.7.0

$query = new WP_Date_Query( array( 'year'=>'2015' ), 'post_date' );
echo $query->get_sql();

// Виведе: AND (YEAR(wp_posts.post_date) = 2015)

$query_args = array(
	'column' => 'post_date',
	'compare' => '=',
	'relation' => 'OR',
	'before' => '', // Дата запису "до" якої будуть отримані.
	'after' => '', // Дата запису "після" якої буде отримано.
	// Параметри вкладеного масиву (before, after і т.д.) можна використовувати і на цьому рівні.
	array(
		'before' => '', // Дата запису "до" якої будуть отримані.
		'after' => '', // Дата запису "після" якої буде отримано.
		'column' => '', // назва колонки дані з якої брати
		'inclusive' => false, // true - включно з датами before та/або after.
		'compare' => '=',
		'year' => '',
		'month' => '',
		'week' => '',
		'dayofyear' => '',
		'day' => '',
		'dayofweek' => '', // Номер дня тижня (1-7, де 1 - неділя).
		'dayofweek_iso' => '', // Номер дня тижня (1-7, де 1 – понеділок).
		'hour' => '',
		'minute' => '',
		'second' => '',
	),
	//array( ... ),
	//array( ... )
)
$query = new WP_Date_Query( $query_args, $default_column );
$query = $query->get_sql();

$query = new WP_Date_Query( $query_args, $default_column );
$query = $query->get_sql();

$query_args = array(
	'relation' => 'AND',
	array('year' => 2013, 'month' => 7, 'compare' => '>=' ),
	array('year' => 2013, 'month' => 9, 'compare' => '<=' ),
)
$query = new WP_Date_Query( $query_args, 'post_date' );
echo $query->get_sql();

/* Виведе:
AND (
 ( YEAR ( wp_posts.post_date ) >= 2013 AND MONTH ( wp_posts.post_date ) >= 7 )
 AND
 ( YEAR ( wp_posts.post_date ) <= 2013 AND MONTH ( wp_posts.post_date ) <= 9 )
)
*/

$query_args = array(
	array('after' => '2 weeks ago'),
	// array('after' => '-2 week'), // або можна записати так
	// 'after' => '2 weeks ago' // або можна записати так
)
$query = new WP_Date_Query( $query_args, 'post_date' );
echo $query->get_sql();

// Виведе:
// AND ( wp_posts.post_date > '2015-05-18 00:51:09' )

$query_args = array(
	array(
		'dayofweek_iso' => array( 1, 5 ),
		'compare' => 'BETWEEN',
	),
	array(
		'before' => 'July 1st, 2015'
	),
	'relation' => 'AND'
);
$query = new WP_Date_Query( $query_args, 'post_modified');
echo $query->get_sql();

/* Виведе:
AND (
 WEEKDAY( wp_posts.post_modified ) + 1 BETWEEN 1 AND 5
 AND
 wp_posts.post_modified < '2015-07-01 00:00:00'
)
*/

$posts = get_posts("year=2015")

$posts = get_posts("year=2013&month=12&day=30");

$posts = get_posts(array(
	'w'=>date('W'),
	'year'=>date('Y')
)));

$posts = get_posts(
	'date_query' => array(
		array( 'year' => 2013, 'month' => 9, 'day' => 10, 'compare' => '<=', ),
		array( 'year' => 2013, 'month' => 9, 'day' => 1, 'compare' => '>=', ),
	),
);

$posts = get_posts(
	'date_query' => array(
		'before' => array( 'year' => 2013, 'month' => 9, 'day' => 10 ),
		'after' => array( 'year' => 2013, 'month' => 9, 'day' => 1 ),
		'inclusive' => true, // включно
	),
);

$posts = get_posts(
	'date_query' => array(
		'before' => 'September 10th, 2013',
		'after' => 'September 1st, 2013',
		'inclusive' => true,
	),
);

$posts = get_posts(array(
	'date_query' => array(
		'after' => '2 weeks ago',
	),
)));

$posts = get_posts(array(
	'date_query' => array(
		'after' => '2 місяці тому',
		array(
			'dayofweek_iso' => array( 1, 5 ),
			'compare' => 'BETWEEN',
		),
	),
)));

$query_args = array(
	'posts_per_page' => -1,
	'date_query' => array(
		array(
			'column' => 'post_date_gmt',
			'before' => '1 рік тому',
		),
		array(
			'column' => 'post_modified_gmt',
			'after' => '1 місяць тому',
		),
		'relation' => 'AND',
	)
);

$posts = get_posts($query_args);

$comments = get_comments( array(
	'date_query' => array(
		array(
			'week' => gmdate( 'W' ) - 1
		)
	)
)));

$users = get_users(array(
	'date_query' => array( 'after' => '1 місяць тому' )
));

// працювати не буде
$users = get_users(array(
	'date_query' => array( 'after' => '1 місяць тому', 'column' => 'user_login' )
));

apply_filters( 'date_query_valid_columns', $valid_columns );

// додаємо нове поле
add_filter('date_query_valid_columns', function( $valid_columns ){
	$valid_columns[] = 'user_login';
	return $valid_columns;
});

$users = get_users(array(
	'date_query' => array( 'after' => '1 місяць тому', 'column' => 'user_login' )
));

список змін

Код WP_Date_Query{} WP Date Query{} ^{WP 6.0.2}

class WP_Date_Query {
	/**
	 * Array of date queries.
	 *
	 * See WP_Date_Query::__construct() for information on date query arguments.
	 *
	 * @ Since 3.7.0
	 * @var array
	 */
	$queries = array();

	/**
	 * The default relation між top-level queries. Can be either 'AND' or 'OR'.
	 *
	 * @ Since 3.7.0
	 * @var string
	 */
	public $relation = 'AND';

	/**
	 * The column to query against. Can be changed via the query arguments.
	 *
	 * @ Since 3.7.0
	 * @var string
	 */
	public $column = 'post_date';

	/**
	 * The value comparison operator. Can be changed via the query arguments.
	 *
	 * @ Since 3.7.0
	 * @var string
	 */
	public $compare = '=';

	/**
	 * Supported time-related parameter keys.
	 *
	 * @ Since 4.1.0
	 * @var string[]
	 */
	public $time_keys = array( 'after', 'before', 'year', 'month', 'monthnum', 'week', 'w', 'dayofyear', 'day', 'dayofweek', 'dayofweek_iso', 'hour', 'minute', 'second');

	/**
	 * Constructor.
	 *
	 * Time-related parameters that normally require integer values ​​('year', 'month', 'week', 'dayofyear', 'day',
	 * 'dayofweek', 'dayofweek_iso', 'hour', 'minute', 'second') accept arrays of integers for some values ​​of
	 * 'Compare'. When 'compare' is 'IN' або 'NOT IN', arrays are accepted; when 'compare' is 'BETWEEN' or 'NOT
	 * BETWEEN', arrays 2 valid values ​​are required. Натисніть на окремий argument descriptions for accepted values.
	 *
	 * @ Since 3.7.0
	 * @since 4.0.0 $inclusive логічний був updated до включення всі часи зв date range.
	 * @since 4.1.0 Introduced 'dayofweek_iso' time type parameter.
	 *
	 * @param array $date_query {
	 * Array of date query clauses.
	 *
	 * @type array ...$0 {
	 * @type string $column Optional. column to query against. Якщо undefined, inherits the value of
	 * the `$default_column` parameter. See WP_Date_Query::validate_column() and
	 * the {@see 'date_query_valid_columns'} filter for the list of accepted values.
	 * Default 'post_date'.
	 * @type string $compare Optional. The comparison operator. Accepts '=', '!=', '>', '>=', '<', '<=',
	 * 'IN', 'NOT IN', 'BETWEEN', 'NOT BETWEEN'. Default '='.
	 * @type string $relation Optional. The boolean relationship between the date queries. Accepts 'OR' or 'AND'.
	 * Default 'OR'.
	 * @type array ...$0 {
	 * Optional. На 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,
	 * або array of 'year', 'month', 'day' values.
	 *
	 * @type string $year The four-digit year. Default empty. Accepts any four-digit year.
	 * @type string $month Optional when passing array.The month of the year.
	 * Default (string:empty)|(array:1). Accepts numbers 1-12.
	 * @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 after. Accepts `strtotime()`-compatible string,
	 * або array of 'year', 'month', 'day' values.
	 *
	 * @type string $year The four-digit year. Accepts any four-digit year. Default empty.
	 * @type string $month Optional when passing array. month of the year. Accepts numbers 1-12.
	 * Default (string:empty)|(array:12).
	 * @type string $day Optional when passing array.The day of the month. Accepts numbers 1-31.
	 * Default (string:empty)|(array:last day of month).
	 * }
	 * @type string $column Optional. Used to add a clause comparing a column інших than
	 * the column specified in the top-level `$column` parameter.
	 * See WP_Date_Query::validate_column() and
	 * the {@see 'date_query_valid_columns'} filter for the list
	 * of accepted values. Default is the value of top-level `$column`.
	 * @type string $compare Optional. The comparison operator. Accepts '=', '!=', '>', '>=',
	 * '<', '<=', 'IN', 'NOT IN', 'BETWEEN', 'NOT BETWEEN'. 'IN',
	 * 'NOT IN', 'BETWEEN', 'NOT BETWEEN'. Comparisons support
	 * arrays in some time-related parameters. Default '='.
	 * @type bool $inclusive Optional. Include results from datas specified in 'before' or
	 * 'after'. Default false.
	 * @type int|int[] $year Optional. The four-digit year number. Accepts any four-digit year
	 * or an array of years if `$compare` supports it. Default empty.
	 * @type int|int[] $month Optional. The 2-digit month number. Accepts numbers 1-12 or an
	 * array of valid numbers if `$compare` supports it. Default empty.
	 * @type int|int[] $week Optional. Вік number of the year. Accepts numbers 0-53 or an
	 * array of valid numbers if `$compare` supports it. Default empty.
	 * @type int|int[] $dayofyear Optional. The day number of the year. Accepts numbers 1-366 or an
	 * array of valid numbers if `$compare` supports it.
	 * @type int|int[] $day Optional. The day of the month. Accepts numbers 1-31 or an array
	 * of valid numbers if `$compare` supports it. Default empty.
	 * @type int|int[] $dayofweek Optional. The day number of the week. Accepts numbers 1-7 (1 is
	 * Sunday) або array of valid numbers if `$compare` supports it.
	 * Default empty.
	 * @type int|int[] $dayofweek_iso Optional. Day number of the week (ISO). Accepts numbers 1-7
	 * (1 is Monday) або array of valid numbers if `$compare` supports it.
	 * Default empty.
	 * @type int|int[] $hour Optional. Hour of the day. Accepts numbers 0-23 or an array
	 * of valid numbers if `$compare` supports it. Default empty.
	 * @type int|int[] $minute Optional. Minute of the hour. Accepts numbers 0-59 or an array
	 * of valid numbers if `$compare` supports it. Default empty.
	 * @type int|int[] $second Optional. Second of the minute. Accepts numbers 0-59 or an
	 * array of valid numbers if `$compare` supports it. Default empty.
	 * }
	 * }
	 * }
	 * @param string $default_column Optional. Default column to query against. See WP_Date_Query::validate_column()
	 * and the {@see 'date_query_valid_columns'} filter for the list of accepted values.
	 * Default 'post_date'.
	 */
	public function __construct( $date_query, $default_column = 'post_date' ) {
		if ( empty( $date_query ) || ! is_array( $date_query ) ) {
			return;
		}

		if ( isset( $date_query['relation'] ) && 'OR' === strtoupper( $date_query['relation'] ) ) {
			$this->relation = 'OR';
		} else {
			$this->relation = 'AND';
		}

		// Support for passing time-based keys в top level of the $date_query array.
		if ( ! isset( $date_query[0] ) ) {
			$ date_query = array ($ date_query);
		}

		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 );

		$this->queries = $this->sanitize_query( $date_query );
	}

	/**
	 * Recursive-friendly query sanitizer.
	 *
	 * Ensures that each query-level clause has 'relation' key, and that
	 * кожний перший-порядок клавіатури містить всі необхідні клавіші з $defaults.
	 *
	 * @ Since 4.1.0
	 *
	 * @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;
			}

			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 {
				// Будь-який array без time key is another query, so we recurse.
				$cleaned_query[] = $this->sanitize_query( $q, $queries );
			}
		}

		return $cleaned_query;
	}

	/**
	 * Determine wheth this is a first-order clause.
	 *
	 * Checks to see if the current clause has any time-related keys.
	 * If so, it's first-order.
	 *
	 * @ Since 4.1.0
	 *
	 * @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);
	}

	/**
	 * Determines and validates what comparison operator to use.
	 *
	 * @ Since 3.7.0
	 *
	 * @param array $query A date query або 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'), true)
		) {
			return strtoupper( $query['compare'] );
		}

		return $this->compare;
	}

	/**
	 * Validates given date_query values ​​and triggers errors if something is not valid.
	 *
	 * Note that date queries with invalid data ranges are allowed to
	 * continue (через курс не будь-які предмети будуть відомі для неможливих днів).
	 * Цей метод тільки generates debug notices for these cases.
	 *
	 * @ Since 4.1.0
	 *
	 * @param array $date_query The date_query array.
	 * @return bool Напевно, якщо всі значення в нормі є valid, false якщо один або більше помилок.
	 */
	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 містить all min-max checks.
		$min_max_checks = array();

		// Days per year.
		if ( array_key_exists( 'year', $date_query ) ) {
			/*
			 * Якщо роки exists в date query, we can use it to get the days.
			 * Якщо кілька років є передбачені (як у BETWEEN), використовуйте першу один.
			 */
			if ( is_array( $date_query['year'] ) ) {
				$_year = reset($date_query['year']);
			} else {
				$_year = $date_query['year'];
			}

			$max_days_of_year = gmdate( 'z', mktime( 0, 0, 0, 12, 31, $_year ) ) + 1;
		} else {
			/ / Іншівикористовують 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 ) ) {
			/*
			 * Якщо ми маємо конкретний рік, використовуйте його для визначення кількості номерів.
			 * Note: число номерів в році і рік є в 28 грудня.
			 */
			$week_count = gmdate( 'W', mktime( 0, 0, 0, 12, 28, $_year ) );

		} else {
			// Іншівиберіть 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.
			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;
				}
			}
		}

		// Якщо ми маємо вчасні дані messages, не треба торкатися через 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'] ) ) ) {
				$day_month_year_error_msg = sprintf(
					/* translators: 1: Year, 2: Month, 3: Day of month. */
					__( 'The following values ​​do not describe a valid date: year %1$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;
			}
		} elseif ( $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']) ) ) ) {
				$day_month_year_error_msg = sprintf(
					/* translators: 1: Month, 2: Day of month. */
					__( 'The following values ​​no describe a valid date: month %1$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 table prefix (якщо 'post_date') є checked against a list of
	 * allowed and 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 allowed
	 * check, and are only sanitized to remove illegal characters.
	 *
	 * @ Since 3.7.0
	 *
	 * @param string $column User-supplied column name.
	 * @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',
			'user_registered',
			'registered',
			'last_updated',
		);

		// Attempt to detect a table prefix.
		if ( false === strpos( $column, '.' ) ) {
			/**
			 * Filters аркуш valid date query columns.
			 *
			 * @ Since 3.7.0
			 * @since 4.1.0 Added 'user_registered' до тих пір, що були переглянуті.
			 * @since 4.6.0 Added 'registered' and 'last_updated' до цих повідомлень.
			 *
			 * @param string[] $valid_columns На 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 ) ) {
				$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',
				),
				$wpdb->blogs => array(
					'registered',
					'last_updated',
				),
			);

			// 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;
					break;
				}
			}
		}

		// Remove unsafe characters.
		return preg_replace( '/[^a-zA-Z0-9_$.]/', '', $column );
	}

	/**
	 * Generate WHERE clause to be appended to a main query.
	 *
	 * @ Since 3.7.0
	 *
	 * @return string MySQL WHERE clause.
	 */
	public function get_sql() {
		$sql = $this->get_sql_clauses();

		$where = $sql['where'];

		/**
		 * Filters the date query WHERE clause.
		 *
		 * @ Since 3.7.0
		 *
		 * @param string $where WHERE clause of the date query.
		 * @param WP_Date_Query $query WP_Date_Query instance.
		 */
		return apply_filters( 'get_date_sql', $where, $this );
	}

	/**
	 * Generate SQL clauses to be appended to a main query.
	 *
	 * Called by the public WP_Date_Query::get_sql(), цей метод is abstracted
	 * out to maintain parity з іншими Query classes.
	 *
	 * @ Since 4.1.0
	 *
	 * @return string[] {
	 * Array containing JOIN and WHERE SQL clauses to append to the main query.
	 *
	 * @type string $join SQL fragment доappend to the main JOIN clause.
	 * @type string $where SQL fragment доappend 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 single query array.
	 *
	 * Якщо незавершені subqueries є відомості, це метод recurses the tree to
	 * produce the property nested SQL.
	 *
	 * @ Since 4.1.0
	 *
	 * @param array $query Query to parse.
	 * @param int $depth Optional. Номер з рівнем рівнів глибоко ми були поточно.
	 * Використовується для визначення інденції. Default 0
	 * @return array {
	 * Array containing JOIN and WHERE SQL clauses to append to a single query array.
	 *
	 * @type string $join SQL fragment доappend to the main JOIN clause.
	 * @type string $where SQL fragment доappend 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 = $query['relation'];
			} elseif (is_array($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'] );
					if (! $where_count) {
						$sql_chunks['where'][] = '';
					} elseif ( 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 in single string.
		if ( ! empty( $sql_chunks['join'] ) ) {
			$sql['join'] = implode( ' ', array_unique( $sql_chunks['join'] ) );
		}

		// Generate a single WHERE clause with property 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 in 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
	 *
	 * @param array $query Date query arguments.
	 * @return string[] {
	 * Array containing JOIN and WHERE SQL clauses to append to the main query.
	 *
	 * @type string $join SQL fragment доappend to the main JOIN clause.
	 * @type string $where SQL fragment доappend 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 в SQL для WHERE clause.
	 *
	 * @ Since 4.1.0
	 *
	 * @param array $query Date query clause.
	 * @param array $parent_query Parent query of the current date query.
	 * @return string[] {
	 * Array containing JOIN and WHERE SQL clauses to append to the main query.
	 *
	 * @type string $join SQL fragment доappend to the main JOIN clause.
	 * @type string $where SQL fragment доappend to the main WHERE clause.
	 * }
	 */
	protected function get_sql_for_clause( $query, $parent_query ) {
		Global $wpdb;

		// The sub-parts of $where part.
		$where_parts = array();

		$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.
		$lt = '<';
		$gt = '>';

		if ($inclusive) {
			$lt .= '=';
			$gt .= '=';
		}

		// Range queries.
		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.

		$date_units = array(
			'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' ),
		);

		// Зберегти можливі дані units і придбати їм до статі.
		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[ $query_part ] );
					if ($ value) {
						switch ( $sql_part ) {
							case '_wp_mysql_week':
								$where_parts[] = _wp_mysql_week($column). $compare $value;
								break;
							case 'WEEKDAY':
								$where_parts[] = "$sql_part( $column ) + 1 $compare $value";
								break;
							default:
								$where_parts[] = "$sql_part( $column ) $compare $value";
						}

						break;
					}
				}
			}
		}

		if ( isset( $query['hour'] ) || isset( $query['minute'] ) || isset( $query['second'] ) ) {
			// Avoid notices.
			foreach ( array( 'hour', 'minute', 'second' ) as $unit ) {
				if ( ! isset( $query[ $unit ] ) ) {
					$query[ $unit ] = null;
				}
			}

			$time_query = $this->build_time_query( $column, $compare, $query['hour'], $query['minute'], $query['second'] );
			if ($time_query) {
				$where_parts[] = $time_query;
			}
		}

		/*
		 * Return array of 'join' and 'where' for compatibility
		 * with other query classes.
		 */
		return array(
			'where' => $where_parts,
			'join' => array(),
		);
	}

	/**
	 * Builds and validates a value string заснований на comparison operator.
	 *
	 * @ Since 3.7.0
	 *
	 * @param string $compare The compare operator to use.
	 * @param string|array $value The value.
	 * @return string | false |
	 */
	public function build_value( $compare, $value ) {
		if ( ! isset ( $ value ) ) {
			return false;
		}

		switch ($ compare) {
			case 'IN':
			case 'NOT IN':
				$ 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 ) ) {
					$ 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;
		}
	}

	/**
	 * Builds a MySQL format date/time based on some query parameters.
	 *
	 * Ви можете пройти array of values ​​(year, month, etc.) with missing parameter values ​​bey 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().
	 *
	 * @ Since 3.7.0
	 *
	 * @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 те, що є arrays, або string values ​​що є
	 * subset of MySQL date format ('Y', 'Ym', 'Ymd', 'Ymd H:i').
	 * Default: false.
	 * @return string|false A MySQL format date/time or false on failure
	 */
	public function build_mysql_datetime( $datetime, $default_to_max = false ) {
		if (! is_array($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 ) ) {
				// Y
				$datetime = array(
					'year' => (int) $matches[1],
				);

			} elseif ( preg_match( '/^(d{4})-(d{2})$/', $datetime, $matches ) ) {
				// Ym
				$datetime = array(
					'year' => (int) $matches[1],
					'month' => (int) $matches[2],
				);

			} elseif ( preg_match( '/^(d{4})-(d{2})-(d{2})$/', $datetime, $matches ) ) {
				// Ymd
				$datetime = array(
					'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})$/ ', $ datatime, $ matches ) ) {
				// Ymd H:i
				$datetime = array(
					'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);

				if ( false === $dt ) {
					return gmdate( 'Ymd H:i:s', false );
				}

				return $dt->setTimezone( $wp_timezone )->format( 'Ymd 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, або second is set than a normal comparison will be done.
	 * However if multiple values ​​are passed, a pseudo-decimal time will be created
	 * в order to be able до accurately compare against.
	 *
	 * @ Since 3.7.0
	 *
	 * @param string $column 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 ) {
		Global $wpdb;

		// Have to have at least one.
		if ( ! isset( $hour ) && ! isset( $minute ) && ! isset( $second ) ) {
			return false;
		}

		// Комплексні комбіновані пошукові системи не підтримуються для multi-value queries.
		if ( in_array( $compare, array( 'IN', 'NOT IN', 'BETWEEN', 'NOT BETWEEN' ), true ) ) {
			$ return = array();

			$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 ) {
				$return[] = "SECOND( $column ) $compare $value";
			}

			return implode('AND', $return);
		}

		// Cases where just one unit is set.
		if ( isset ( $ hour ) & & ! isset ( $ minute ) & & ! isset ( $ second ) ) {
			$value = $this->build_value( $compare, $hour );
			if ( false !== $value ) {
				return "HOUR( $column ) $compare $value";
			}
		} elseif ( ! isset( $hour ) && isset( $minute ) && ! isset( $second ) ) {
			$value = $this->build_value( $compare, $minute );
			if ( false !== $value ) {
				return "MINUTE( $column ) $compare $value";
			}
		} elseif ( ! isset( $hour ) && ! isset( $minute ) && isset( $second ) ) {
			$value = $this->build_value( $compare, $second );
			if ( false !== $value ) {
				return "SECOND( $column ) $compare $value";
			}
		}

		// Single units були already handled. Since hour & second isn't allowed, minute must to be set.
		if ( ! isset ( $ minute ) ) {
			return false;
		}

		$format = '';
		$time = '';

		// Hour.
		if ( null !== $hour ) {
			$format .= '%H.';
			$time .= sprintf( '%02d', $hour ) . '.';
		} else {
			$format .= '0.';
			$time .= '0.';
		}

		// Minute.
		$format .= '%i';
		$time .= sprintf( '%02d', $minute );

		if ( isset ( $ second ) ) {
			$format .= '%s';
			$time .= sprintf( '%02d', $second );
		}

		return $wpdb->prepare( "DATE_FORMAT( $column, %s ) $compare %f", $format, $time );
	}
}

Зв’язані функції

SQL (запити)

Класи