PHP 5 has reached end of support and will be
deprecated
on January 31, 2026. After deprecation, you won't be able to deploy PHP 5
applications, even if your organization previously used an organization policy to
re-enable deployments of legacy runtimes. Your existing PHP
5 applications will continue to run and receive traffic after their
deprecation date. We recommend that
you migrate to the latest supported version of PHP.
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Region ID
The REGION_ID is an abbreviated code that Google assigns
based on the region you select when you create your app. The code does not
correspond to a country or province, even though some region IDs may appear
similar to commonly used country and province codes. For apps created after
February 2020, REGION_ID.r is included in
App Engine URLs. For existing apps created before this date, the
region ID is optional in the URL.
You can use various methods to communicate between your App Engine
services or with other services, including Google Cloud services and
external applications.
The simplest approach for communicating with your App Engine service is
to send targeted HTTP requests, where the URL includes the name or ID of a
resource. For example, you can include the ID of a service or version that you
want to target, in addition to the corresponding Google Cloud project ID:
To share data across databases and your App Engine app or some other
external application, see
Understanding Data and File
Storage.
In the standard environment, you can also pass requests between services and
from services to external endpoints using the
URL Fetch API.
Additionally, services in the standard environment that reside within the same
Google Cloud project can also use one of the App Engine APIs for the
following tasks:
[[["Easy to understand","easyToUnderstand","thumb-up"],["Solved my problem","solvedMyProblem","thumb-up"],["Other","otherUp","thumb-up"]],[["Hard to understand","hardToUnderstand","thumb-down"],["Incorrect information or sample code","incorrectInformationOrSampleCode","thumb-down"],["Missing the information/samples I need","missingTheInformationSamplesINeed","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2025-08-04 UTC."],[[["The `REGION_ID` is a Google-assigned code based on the region selected during app creation, included in App Engine URLs for apps created after February 2020, but optional for older apps."],["App Engine services can communicate via targeted HTTP requests using URLs that include resource IDs like service or version, and project IDs."],["Data can be shared across databases, the App Engine app, or external applications, as explained in the \"Understanding Data and File Storage\" document."],["Services in the standard environment can use the URL Fetch API to pass requests between services and external endpoints, and can share a memcache instance or utilize Task Queues."],["Certain URL paths, such as those ending with `/eventlog`, starting with `/_ah/`, or some paths ending with `z`, are reserved and cannot be used."]]],[]]
