Add MAMP's PHP to the only if MAMP is installed

zsh/lib/config-utils.zsh

@@ -21,3 +21,23 @@ is-linux() {
     false
   fi
 }
+
+# Check if MAMP is installed on the system (which obviously has to be OSX).
+is-mamp-installed() {
+  is-osx && [[ -d /Applications/MAMP ]]
+}
+
+# Return the path to the `bin/` directory of the latest version of the PHP
+# shipped with MAMP.
+mamp-latest-php-bin-dir() {
+  local _pwd=$(pwd)
+  local _mamp_php_dir='/Applications/MAMP/bin/php'
+  local _php_versions
+
+  cd "$_mamp_php_dir"
+  _php_versions=($(ls -d php*))
+  _php_latest="$_mamp_php_dir/"$_php_versions[-1]'/bin'
+  cd "$_pwd"
+
+  echo -n "$_php_latest"
+}

zsh/lib/path.zsh

@@ -1,16 +1,20 @@
-# Make sure that the PHP install in MAMP is the first one if we're on OSX.
-is-osx && export PATH=/Applications/MAMP/bin/php/php5.5.10/bin
+# Start with a clean slate, with only the scripts in the `bin` directory of the
+# $DOTFILES.
+PATH="$DOTFILES/bin"
 
 # Standard PATH entries.
-export PATH=$PATH:/usr/local/sbin
-export PATH=$PATH:/usr/local/bin
-export PATH=$PATH:/usr/bin
-export PATH=$PATH:/usr/sbin
-export PATH=$PATH:/bin
-export PATH=$PATH:/sbin
+export PATH="$PATH:/usr/local/sbin"
+export PATH="$PATH:/usr/local/bin"
+export PATH="$PATH:/usr/bin"
+export PATH="$PATH:/usr/sbin"
+export PATH="$PATH:/bin"
+export PATH="$PATH:/sbin"
 
 # RVM.
-export PATH=$PATH:$HOME/.rvm/bin
+export PATH="$PATH:$HOME/.rvm/bin"
 
-# bin/ directory in the dotfiles.
-export PATH=$PATH:$DOTFILES/bin
+# Make sure that the PHP install in MAMP is the first one if we're on OSX and
+# MAMP is installed.
+if is-osx && is-mamp-installed; then
+  export PATH="$(mamp-latest-php-bin-dir):$PATH"
+fi