app.yaml

runtime: php81
env: standard     # let app engine know we use flexible environment

runtime_config:
 document_root: public   #folder where index.php is
# Ensure we skip ".env", which is only for local development
env_variables:
 # Put production environment variables here.
 APP_ENV: local   # or production
 APP_DEBUG : true # or false
 APP_KEY: base64:aZpQDX7zBq3yHDSSdeRoGzdl6GNxeTWbAe8prxVxaLQ=
#go to generate app key paragraf in this tutorial
 CACHE_DRIVER: database
# instead of putting the cache in the database I recommend using redis
 SESSION_DRIVER: database #or file since both work
 APP_LOG: daily
 APP_TIMEZONE: UTC #your timezone of choice
# follow the part of the tutorial on setting up your SQL database
 DB_CONNECTION: mysql
 DB_HOST: localhost
 DB_DATABASE: c-ditech
 DB_USERNAME: root
 DB_PASSWORD: 
 DB_SOCKET: /cloudsql/instance_name
 QUEUE_DRIVER: database #in case you execute queued jobs
 MAIL_DRIVER: smtp
 MAIL_HOST:
 MAIL_PORT:
 MAIL_USERNAME:
 MAIL_PASSWORD:
 LOG_DELETE:  true # this is a parameter added by us in the project .env file. You can add here any setting you would add to your .env file
 GOOGLE_VISION_PROJECT_ID : project_id
#we need this for the flex environment
beta_settings:
   # for Cloud SQL, set this value to the Cloud SQL connection name,
   # e.g. "project:region:cloudsql-instance"
   cloud_sql_instances: project:cloudsql-instance