AssignmentReceipt

Rasuvaeff\Yii3AbTesting\AssignmentReceipt

Class · rasuvaeff/yii3-ab-testing · Source

Proof of an exposure, small enough to travel in a cookie or session so a conversion in a later request can be attributed without resolving the assignment again (which could return a different variant after a reweight).

Deliberately carries no environment or dimensions: receipts are stored in size-capped cookies, and a conversion records the context of its own request anyway. The link back to the exposure is exposureEventId.

Constructor

new AssignmentReceipt(
    string $exposureEventId,
    DateTimeImmutable $occurredAt,
    string $experiment,
    string $variant,
    string $subjectId,
    DecisionReason $reason,
    AssignmentSource $source,
    ?string $experimentRevision = null,
)

Properties

Property	Type	Readonly	Description
exposureEventId	string	yes
occurredAt	DateTimeImmutable	yes
experiment	string	yes
variant	string	yes
subjectId	string	yes
experimentRevision	?string	yes
reason	DecisionReason	yes
source	AssignmentSource	yes

Methods

toArray()

toArray(): array

fromArray()

static fromArray(array $data): self

Rebuilds a receipt from toArray() output.

The input is transport data — a cookie value is attacker-controlled even when signed — so every field is re-validated rather than trusted.