add php install script

install/scripts/install-php.sh

@@ -0,0 +1,28 @@
+#!/bin/sh
+
+if [ "$php_version" != 'latest' ] ; then
+	echo 'ERROR: unable to install PHP - only '"'latest'"' version currently supported'
+	exit 30
+fi
+
+if [ -n "$wp_user" ] ; then
+	echo 'Installing PHP for WordPress ...'
+
+ssh -T $ssh << 'EOSSH'
+	apt install -y php-fpm php-bcmath php-curl php-gd php-imagick php-mbstring \
+		php-mysql php-soap php-xml php-zip
+
+	_php_config_file=$(php --ini | grep Loaded | awk '{ print $4 }')
+	sed -i '/memory_limit/c\memory_limit = 256M' "$_php_config_file"
+	sed -i '/upload_max_filesize/c\upload_max_filesize = 64M' "$_php_config_file"
+	sed -i '/post_max_size/c\post_max_size = 64M' "$_php_config_file"
+	sed -i '/max_execution_time/c\max_execution_time = 300M' "$_php_config_file"
+	sed -i '/max_input_time/c\max_input_time = 1000' "$_php_config_file"
+EOSSH
+else
+	echo 'Installing default PHP ...'
+
+ssh -T $ssh << EOSSH
+	apt install -y php libapache2-mod-php php-mysql
+EOSSH
+fi