SNMP core php extension Formula was removed
Last version was

Revision: 10

php72-snmp requires the following formulae to be installed:
autoconf 2.69 Automatic configure script builder
net-snmp 5.7.3 Implements SNMP v1, v2c, and v3, using IPv4 and IPv6

Recent formula history

Jan Viljanen php72: migrate to homebrew/core (#4783)
Sean Molenaar php72 7.2.2
Sean Molenaar php72: 7.2.1
Andreas Braun php72 7.2.0
Andreas Braun php72 7.2.0-RC6

Formula code at GitHub