PHP Switch for homebrew

php-switch.sh

#!/usr/bin/env bash
# Initial creator: Phil Cook

brew_prefix=$(brew --prefix | sed 's#/#\\\/#g')

brew_array=("53","54","55","56","70","71")
php_array=("php53" "php54" "php55" "php56" "php70" "php71")
php_installed_array=()
php_version="php$1"
php_opt_path="$brew_prefix\/opt\/"

php5_module="php5_module"
apache_php5_lib_path="\/libexec\/apache2\/libphp5.so"
php7_module="php7_module"
apache_php7_lib_path="\/libexec\/apache2\/libphp7.so"
native_osx_php_apache_module="LoadModule php5_module libexec\/apache2\/libphp5.so"

php_module="$php5_module"
apache_php_lib_path="$apache_php5_lib_path"
if [ $(echo "$php_version" | sed 's/^php//') -ge 70 ]; then
	php_module="$php7_module"
	apache_php_lib_path="$apache_php7_lib_path"
fi

apache_change=1
native_osx_apache=$(which apachectl | grep '/usr/sbin/apachectl' | wc -l)
apache_conf_path=$(apachectl -V | grep SERVER_CONFIG_FILE | cut -d '"' -f 2)
#apache_conf_path="/etc/apache2/httpd.conf"
apache_php_mod_path="$php_opt_path$php_version$apache_php_lib_path"
lastLoadModule=$(sed -E -e '/^#?LoadModule php/d' $apache_conf_path | grep -e '^LoadModule ' | tail -1  | sed 's#/#\\\/#g')

if [ $native_osx_apache -eq 1 ]; then
	php_apache_module=$native_osx_php_apache_module
else
	php_apache_module=$lastLoadModule
fi

# Has the user submitted a version required
if [[ -z "$1" ]]
then
	echo "usage: brew-php-switcher version [-s]"; echo;
	echo "    version    one of:" ${brew_array[@]};
	echo "    -s         skip change of mod_php on apache"; echo;
	exit
fi

# Check for skip apache
while [[ ${2:0:1} = '-' ]] ; do
	N=1
	L=${#1}
	while [[ $N -lt $L ]] ; do
		case ${2:$N:1} in
			's') apache_change=0 ;;
			*) echo $USAGE
			exit 1 ;;
		esac
		N=$(($N+1))
	done
	shift
done

# What versions of php are installed via brew
for i in ${php_array[*]}
	do
		if [[ -n "$(brew ls --versions "$i")" ]]
		then
			php_installed_array+=("$i")
		fi
done

# Check that the requested version is supported
if [[ " ${php_array[*]} " == *"$php_version"* ]]
then
	# Check that the requested version is installed
	if [[ " ${php_installed_array[*]} " == *"$php_version"* ]]
	then
		# Switch Shell
		echo "Switching to $php_version"
		echo "Switching your shell"
		for i in ${php_installed_array[@]}
		do
			if [[ -n $(brew ls --versions $i) ]]
			then
				brew unlink $i
			fi
		done
		brew link "$php_version"

		# Switch apache
		if [[ $apache_change -eq 1 ]]; then
			echo "You will need sudo power from now on"
			echo "Switching your apache conf in '"$apache_conf_path"'"

			for j in ${php_installed_array[@]}
			do
				loop_php_module="$php5_module"
				loop_apache_php_lib_path="$apache_php5_lib_path"
				if [ $(echo "$j" | sed 's/^php//') -ge 70 ]; then
					loop_php_module="$php7_module"
					loop_apache_php_lib_path="$apache_php7_lib_path"
				fi
				apache_module_string="LoadModule $loop_php_module $php_opt_path$j$loop_apache_php_lib_path"
				comment_apache_module_string="#$apache_module_string"

				# If apache module string within apache conf
				if grep -q "$apache_module_string" "$apache_conf_path"; then
					# If apache module string not commented out already
					if ! grep -q "$comment_apache_module_string" "$apache_conf_path"; then
						sudo sed -i.bak "s/$apache_module_string/$comment_apache_module_string/g" $apache_conf_path
					fi
				# Else the string for the php module is not in the apache config then add it
	 			else
					sudo sed -i.bak "/$php_apache_module/a\\
$comment_apache_module_string\\
" $apache_conf_path
				fi
			done
			sudo sed -i.bak "s/\#LoadModule $php_module $apache_php_mod_path/LoadModule $php_module $apache_php_mod_path/g" $apache_conf_path
			echo "Restarting apache"
			sudo apachectl restart
		fi
		echo "All done!"
	else
		echo "Sorry, but $php_version is not installed via brew. Install by running: brew install $php_version"
	fi
else
	echo "Unknown version of PHP. PHP Switcher can only handle arguments of:" ${brew_array[@]}
fi