Install phpenv on OSX from homebrew packages.

phpenv-osx.sh

#!/usr/bin/env bash
# vim: ai ts=2 sw=2 et sts=2 ft=sh

# Use this script to install or re-install
# multiple versions of PHP on MacOS.
#
# Usage:
#   curl -L https://git.io/v52yY | bash

# Check OS.
if [[ "${OSTYPE//[0-9.]/}" != "darwin" ]]; then
  (>&2 echo "Error: This script is for MacOS not '${OSTYPE}'.")
  exit 1;
fi

# Install homebrew.
if ! command -v brew 1>/dev/null; then
  /usr/bin/ruby -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install)"
fi

# Intall taps.
brew tap homebrew/php

# Upgrade everything.
brew update
brew upgrade

# Install PHP versions.
for PHP_VER in "5.5" "5.6" "7.0" "7.1" "7.2"; do
  brew install "php${PHP_VER/./}"
  brew link "php${PHP_VER/./}"
  echo "date.timezone = UTC" > "$(brew --prefix)/etc/php/${PHP_VER}/conf.d/date.ini"

  # Install PHP extensions.
  for PHP_EXT in "mcrypt" "opcache" "xdebug" "yaml"; do
    brew install "php${PHP_VER/./}-${PHP_EXT}" 2>/dev/null
  done;

  # Clean up.
  brew unlink "php${PHP_VER/./}"
done;

# Install phpenv.
export PHPENV_ROOT="${HOME}/.phpenv"
curl -fsSL http://git.io/phpenv-installer | bash

# shellcheck disable=SC2016
if ! command -v phpenv 1>/dev/null; then
  { echo 'export PHPENV_ROOT="${HOME}/.phpenv"'
    echo 'if [[ -d "${PHPENV_ROOT}" ]]; then'
    echo '  export PATH="${PHPENV_ROOT}/bin:${PATH}";'
    echo '  eval "$(phpenv init -)";'
    echo 'fi'
  } >> "${HOME}/.bash_profile"

  export PATH="${PHPENV_ROOT}/bin:${PATH}"
  eval "$(phpenv init -)"
fi

if [[ ! -d "${HOME}/.phpenv/versions" ]]; then
  mkdir -p "${HOME}/.phpenv/versions"
fi

find "${HOME}/.phpenv/versions" -maxdepth 1 -mindepth 1 -type l -delete

# Allow globs to return no results.
shopt -s nullglob

for PHP_PATH in $(brew --prefix)/Cellar/php[0-9][0-9]/*; do
  PHP_VERSION=${PHP_PATH##*/};
  ln -s "${PHP_PATH}" "${HOME}/.phpenv/versions/" 2>/dev/null
  unlink "${HOME}/.phpenv/versions/${PHP_VERSION%.*}" 2>/dev/null
  ln -s "${PHP_PATH}" "${HOME}/.phpenv/versions/${PHP_VERSION%.*}" 2>/dev/null
done

phpenv rehash