WP_REST_Request::has_param() – Method

WP_REST_Request::has_param( string $key ): bool

Checks if a parameter exists in the request.

Description

This allows distinguishing between an omitted parameter, and a parameter specifically set to null.

Parameters

$keystringrequired: Parameter name.

Return

bool True if a param exists for the given key.

Source

public function has_param( $key ) {
	$order = $this->get_parameter_order();

	foreach ( $order as $type ) {
		if ( is_array( $this->params[ $type ] ) && array_key_exists( $key, $this->params[ $type ] ) ) {
			return true;
		}
	}

	return false;
}

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Uses	Description
WP_REST_Request::get_parameter_order()`wp-includes/rest-api/class-wp-rest-request.php`	Retrieves the parameter priority order.

Changelog

Version	Description
5.3.0	Introduced.

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