php5-snmp software package provides SNMP module for php5, you can install in your Ubuntu 14.04 LTS (Trusty Tahr) by running the commands given below on the terminal,
$ sudo apt-get update $ sudo apt-get install php5-snmp
php5-snmp is installed in your system.
Make ensure the php5-snmp package were installed using the commands given below,
$ sudo dpkg-query -l | grep php5-snmp *
You will get with php5-snmp package name, version, architecture and description in a table
| Distro | Ubuntu 14 04 lts trusty tahr |
| Section | PHP |
| Package | php5-snmp |
| Version | 5.5.9+dfsg-1ubuntu4.20 [amd64, |
| Description | SNMP module for php5 |
| Sub Section | PHP |