phpvm :: A rudimentary version manager for Homebrew-installed PHP versions.

phpvm.sh

#!/usr/bin/env bash
#
# phpvm
#
# A rudimentary version manager for Homebrew-installed PHP versions.
#
# @TODO run composer update?
# @TODO consider offerring to attempt a patch version upgrade

VERSION="$1"

[[ -z "$VERSION" ]] && echo 'Version not specified!' && exit 1

recipe="php@${VERSION}"
conf_src="${XDG_CONFIG_HOME:-${HOME}/.config}/php/conf.d"
brew_prefix="$(brew --prefix)"
current=$(php-version)

semver() {
  "${XDG_BIN_HOME}/semver" "$@"
}

# The semver tool expects a valid semver number, but brew php versions only
# include the major and minor version numbers. To handle this discrepancy, we
# append a patch version number to the version argument.
inferred_semver="${VERSION}.0"

echo "Current PHP version is ${current}"

case $(semver diff "${current}" "${inferred_semver}") in
  major|minor)
    echo "Changing PHP version to ${VERSION}"
    ;;
  *)
    echo "Requested PHP version ${VERSION} is already active!"
    exit 1
    ;;
esac

brew upgrade "${recipe}"
brew unlink php && brew link "${recipe}"

if [[ -d "${conf_src}" ]]; then
  echo "Linking custom ini files..."
  fd --type f --extension ini . "${conf_src}" \
    -x ln -sv {} "${brew_prefix}/etc/php/${VERSION}/conf.d"
  echo "Done linking files."
else
  echo "Custom conf file directory ${conf_src} not found. Skipping linking step..."
fi

printf "\nSuccess!\n\n"

which php
echo ""
php --version