Function probeTargetPhp

probeTargetPhp(
    fetchFn: (
        input: string | URL | Request,
        init?: RequestInit,
    ) => Promise<Response>,
    origin: string,
    site?: string,
    timeoutMs?: number,
): Promise<TargetRuntime | null>
Reads the interpreter version off a deployment's /php route.

Returns null rather than throwing for every failure mode -- gated, absent, unreachable, or a body without a version -- because not being able to read it is the expected case and must degrade to the labelled fallback rather than failing a plan.
Parameters
- fetchFn: (input: string | URL | Request, init?: RequestInit) => Promise<Response>
- origin: string
- site: string = 'site'
- timeoutMs: number = 15_000
Returns Promise<TargetRuntime | null>
- Defined in src/migrate/target-runtime.ts:81