post-merge hook for composer php apps

post-merge

#/usr/bin/env bash
# MIT © Sindre Sorhus - sindresorhus.com
# forked by Gianluca Guarini
# phponly by Ivo Bathke ;)

changed_files="$(git diff-tree -r --name-only --no-commit-id ORIG_HEAD HEAD)"

check_run() {
  echo "$changed_files" | grep --quiet "$1" && eval "$2"
}

# `composer install` if the `composer.lock` file gets changed
# to update all the php dependencies
check_run composer.lock "composer install --no-dev"

thx:
https://gist.github.com/sindresorhus/7996717
thx:
https://gist.github.com/GianlucaGuarini/8001627