WordPress Developer Resources

WP_Tax_Query::sanitize_relation( string $relation ): string

Sanitizes a ‘relation’ operator.

Parameters

$relationstringrequired: Raw relation key from the query argument.

Return

string Sanitized relation. Either 'AND' or 'OR'.

Source

public function sanitize_relation( $relation ) {
	if ( 'OR' === strtoupper( $relation ) ) {
		return 'OR';
	} else {
		return 'AND';
	}
}

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Changelog

Version	Description
4.1.0	Introduced.

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