WP_REST_Request::offsetExists( string $offset )

Checks if a parameter is set.

Parameters

$offset

(Required) Parameter name.

Return

(bool) Whether the parameter is set.

Source

File: wp-includes/rest-api/class-wp-rest-request.php 

	public function offsetExists( $offset ) {
		$order = $this->get_parameter_order();

		foreach ( $order as $type ) {
			if ( isset( $this->params[ $type ][ $offset ] ) ) {
				return true;
			}
		}

		return false;
	}

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Related

Changelog

Changelog
Version Description
WP-4.4.0 Introduced.