Properties and components

Direct fields cover common calendar, event, and todo data. Use Property and Component for repeated values, vendor extensions, unknown fields, and component types without a typed model. These APIs preserve data instead of silently discarding it.

Property lookup

Calendar, Event, Todo, and Component expose the same direct-property methods:

$object->properties();
$object->properties('ATTENDEE');
$object->hasProperty();
$object->hasProperty('RRULE');
$object->property('SUMMARY');

Names are trimmed and compared case-insensitively. null means every direct property; an empty name throws InvalidArgumentException. Lookup never recurses. property() returns the first match, while properties() preserves every match and its document order.

Property values

Member	Type	Meaning
name	string	Uppercase property name.
type	string	Value type, such as text, date-time, or recur.
value	value/list/null	Convenient single value, or a list for repeated values.
values	list<PropertyAtom>	Every value carried by the property.
parameters()	array<string,string|list<string>>	All parameters with uppercase names.
parameter($name)	string|list<string>|null	One case-insensitive parameter lookup.
rawValue()	string	The property value as text.
toArray()	array	A serializable snapshot of all fields above.

PropertyAtom may be bool, int, float, string, CarbonImmutable, DateInterval, or a structured array such as an RRULE map. rawValue() does not include the property name, parameters, or original line folding.

Component lookup

Calendar exposes its first-level children through components(?string $name = null), hasComponent(?string $name = null), and component(string $name). A generic Component exposes components(?string $name = null) for its own first-level children.

$freeBusy = $calendar->component('VFREEBUSY');
$periods = $freeBusy?->properties('FREEBUSY');
$fbType = $periods?->first()?->parameter('FBTYPE');

Names are trimmed, case-insensitive, and non-empty. Lookup only examines the next level; component() returns the first match or null. Component::$name is uppercase. Generic components can represent VEVENT, VTODO, VJOURNAL, VFREEBUSY, VTIMEZONE, and unknown X-* components, including generic views of events and todos.

Raw component access

Calendar::rawComponent(), Event::rawComponent(), Todo::rawComponent(), and Component::rawComponent() return an independent Sabre component for advanced use. Changing it does not change the package's read model. Creating these copies can be expensive for large calendars, so reuse a result instead of repeatedly calling the method in a loop.