WP_Meta_Query::__construct( array $meta_query = false )
Constructor.
Description Description
Parameters Parameters
- $meta_query
-
(array) (Optional) Array of meta query clauses. When first-order clauses or sub-clauses use strings as their array keys, they may be referenced in the 'orderby' parameter of the parent query.
- 'relation'
(string) Optional. The MySQL keyword used to join the clauses of the query. Accepts 'AND', or 'OR'. Default 'AND'. - (array) Optional. An array of first-order clause parameters, or another fully-formed meta query.
- 'key'
(string) Meta key to filter by. - 'compare_key'
(string) MySQL operator used for comparing the $key. Accepts '=', '!=' 'LIKE', 'NOT LIKE', 'IN', 'NOT IN', 'REGEXP', 'NOT REGEXP', 'RLIKE', 'EXISTS' (alias of '=') or 'NOT EXISTS' (alias of '!='). Default is 'IN' when$keyis an array, '=' otherwise. - 'type_key'
(string) MySQL data type that the meta_key column will be CAST to for comparisons. Accepts 'BINARY' for case-sensitive regular expression comparisons. Default is ''. - 'value'
(string) Meta value to filter by. - 'compare'
(string) MySQL operator used for comparing the $value. Accepts '=', '!=', '>', '>=', '<', '<=', 'LIKE', 'NOT LIKE', 'IN', 'NOT IN', 'BETWEEN', 'NOT BETWEEN', 'REGEXP', 'NOT REGEXP', 'RLIKE', 'EXISTS' or 'NOT EXISTS'. Default is 'IN' when$valueis an array, '=' otherwise. - 'type'
(string) MySQL data type that the meta_value column will be CAST to for comparisons. Accepts 'NUMERIC', 'BINARY', 'CHAR', 'DATE', 'DATETIME', 'DECIMAL', 'SIGNED', 'TIME', or 'UNSIGNED'. Default is 'CHAR'.
- 'key'
Default value: false
- 'relation'
Source Source
File: wp-includes/class-wp-meta-query.php
public function __construct( $meta_query = false ) {
if ( ! $meta_query ) {
return;
}
if ( isset( $meta_query['relation'] ) && strtoupper( $meta_query['relation'] ) == 'OR' ) {
$this->relation = 'OR';
} else {
$this->relation = 'AND';
}
$this->queries = $this->sanitize_query( $meta_query );
}
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Changelog Changelog
| Version | Description |
|---|---|
| 5.3.0 | Increased the number of operators available to $compare_key. Introduced $type_key, which enables the $key to be cast to a new data type for comparisons. |
| 5.1.0 | Introduced $compare_key clause parameter, which enables LIKE key matches. |
| 4.2.0 | Introduced support for naming query clauses by associative array keys. |
| 3.2.0 | Introduced. |