symfony-flex-recipes-contrib/mixpanel/mixpanel-php/2.8/config/packages/mixpanel.yaml

services:
    Mixpanel:
        class: \Mixpanel
        factory: ['Mixpanel', 'getInstance']
        arguments:
            - '%env(MIXPANEL_PROJECT_TOKEN)%'
# uncomment if EU resident
#            - { 'host': 'api-eu.mixpanel.com' }