Alternatives install for PHP

php-alternatives-install.sh

#!/bin/bash
# ------------------------------------------------------------------
# [Author] Renato Mefi <gh@mefi.in>
#          https://github.com/renatomefi
#
# [Desc]   Configure alternatives for PHP Installations
#          Very usefull when you are building your PHP and don't want to use
#          more sofsticated softwares like 'phpbrew', 'php-build', 'php-env' ...
#
# [Usage] ./php-alternatives-install.sh /path/for/php/installation 200
#
# [I.E.]  ./php-alternatives-install.sh /opt/php/php-5.6.8 200
#         ./php-alternatives-install.sh /opt/php/php-7.0.0-dev 1
#
#         $sudo alternatives --config php
#         There are 2 programs which provide 'php'.
#
#           Selection    Command
#         -----------------------------------------------
#         *  1           /opt/php/php-5.6.8/bin/php
#          + 2           /opt/php/php-7.0.0-dev/bin/php
#
#         Enter to keep the current selection[+], or type selection number: 2
#
# [Download] https://gist.github.com/renatomefidf/e71eb87ad83a8d16bf0e/download
#

LINKDIR=/usr/bin
PHPPATH=$1
PHPBIN=$PHPPATH/bin
[ -z $2 ] && PRIORITY=20000 || PRIORITY=$2

echo "Installing alternatives for PHP at $LINKDIR from $PHPBIN"
echo "With priority of $PRIORITY";

sudo alternatives --install $LINKDIR/php php $PHPBIN/php $PRIORITY  \
  --slave $LINKDIR/php-cgi     php-cgi     $PHPBIN/php-cgi    \
  --slave $LINKDIR/php-config  php-config  $PHPBIN/php-config \
  --slave $LINKDIR/phpize      phpize      $PHPBIN/phpize     \
  --slave $LINKDIR/phar.phar   phar.phar   $PHPBIN/phar.phar  \
  --slave $LINKDIR/phar        phar        $PHPBIN/phar       \
  --slave $LINKDIR/pecl        pecl        $PHPBIN/pecl       \
  --slave $LINKDIR/pear        pear        $PHPBIN/pear       \
  --slave $LINKDIR/peardev     peardev     $PHPBIN/peardev

echo "Current alternatives for PHP"
alternatives --display php