参考にさせていただいた記事 http://qiita.com/kawanamiyuu/items/7cb4da3d1fa0516cc573 http://qiita.com/livejam_db/items/b70caccdeece036a3797 http://tanakahisateru.hatenablog.jp/entry/20121001/1349093118 http://oshiete.goo.ne.jp/qa/8670980.html https://github.com/Homebrew/homebrew-php/issues/401
