travis.yml

#This is to recompile redis with igbinary, for use with travisci and phpunit.

before_install:
  - printf "\n" | pecl install -f igbinary
  # Install & Build Redis
  - printf "\n" | pecl install -f --nobuild redis
  - cd "$(pecl config-get temp_dir)/redis"
  - phpize
  - ./configure --enable-redis-igbinary
  - make && make install
  - echo "extension = redis.so" >> ~/.phpenv/versions/$(phpenv version-name)/etc/php.ini
  - cd -
  
  #Total travis.yml file is
  
  language: php
php:
  - 7.2
dist: bionic

services:
  - mysql
  - redis-server

before_install:
  #- phpenv config-rm xdebug.ini || true
  - printf "\n" | pecl install -f igbinary
  # Install & Build Redis
  - printf "\n" | pecl install -f --nobuild redis
  - cd "$(pecl config-get temp_dir)/redis"
  - phpize
  - ./configure --enable-redis-igbinary
  - make && make install
  - echo "extension = redis.so" >> ~/.phpenv/versions/$(phpenv version-name)/etc/php.ini
  - cd -

install:
  - composer self-update
  - composer install --no-interaction


before_script:
  - cp env.travis .env.test
  - mysql -e 'CREATE DATABASE phpunit_test;'
  - mysql -e "SET GLOBAL sql_mode = 'IGNORE_SPACE,NO_ZERO_IN_DATE,NO_ZERO_DATE,ERROR_FOR_DIVISION_BY_ZERO,NO_AUTO_CREATE_USER,NO_ENGINE_SUBSTITUTION ';"

I was having an issue in getting redis-server running and compiled with igbinary, for use with phpunit. We require igbinary for some of the tests to be performed.
Unfortunately, it appears that travisci doesn't compile with igbinary when using the

services: 
  - redis-server

So we had to do it ourself. I only found one other instance of someone using the above method, so felt worth me adding this here just in case anyone else is googling and trying to come across the same situation.

:)