AWS Elastic Beanstalk .ebextensions config to install Elasticache memcached cluster client (PHP 5.6)

install-cluster-client.config

files:
  "/home/ec2-user/install-cluster-client.sh":
    mode: "000744"
    owner: root
    group: root
    content: |
        #!/bin/bash
        #hide old ini
        if [ -a /etc/php.d/50-memcached.ini ]
            then
            mv /etc/php.d/50-memcached.ini /etc/php.d/50-memcached.ini.disabled
        fi
        #fetch client
        wget http://elasticache-downloads.s3.amazonaws.com/ClusterClient/PHP-5.6/latest-64bit -O /tmp/AmazonElastiCacheClusterClient-latest-PHP56-64bit.tgz
        #uninstall old version (can fail - is ok)
        pecl uninstall __uri/AmazonElastiCacheClusterClient
        #install new
        pecl install /tmp/AmazonElastiCacheClusterClient-latest-PHP56-64bit.tgz
        #move module to correct place
        mv /root/pear/ext/amazon-elasticache-cluster-client.so /usr/lib64/php/5.6/modules/amazon-elasticache-cluster-client.so
        chmod +x /usr/lib64/php/5.6/modules/amazon-elasticache-cluster-client.so
        #remove where client is stuck in wrong place in ini file
        sed -i '/extension="amazon-elasticache-cluster-client.so"/d' /etc/php.ini
        #make correct ini (done as separate file in .ebextensions)
        #echo "extension=amazon-elasticache-cluster-client.so" | tee /etc/php.d/memcached.ini
  "/etc/php.d/memcached.ini":
    mode: "000644"
    owner: root
    group: root
    content: |
        extension=amazon-elasticache-cluster-client.so
        ;standard settings from 50-memcached
        [memcached]
        memcached.sess_locking = On
        memcached.sess_lock_wait = 150000
        memcached.sess_lock_max_wait = 0;
        memcached.sess_lock_expire = 0;
        memcached.sess_prefix = "memc.sess.key."
        memcached.sess_consistent_hash = Off
        memcached.sess_remove_failed = 1
        memcached.sess_number_of_replicas = 0
        memcached.sess_binary = Off
        memcached.sess_randomize_replica_read = Off
        memcached.sess_connect_timeout = 1000
        memcached.sess_sasl_username = NULL
        memcached.sess_sasl_password = NULL
        memcached.compression_type = "fastlz"
        memcached.compression_factor = "1.3"
        memcached.compression_threshold = 2000
        memcached.serializer = "igbinary"
        memcached.use_sasl = Off
        memcached.store_retry_count = 2
       
commands:
    "01":
        command: /home/ec2-user/install-cluster-client.sh

memcached parameters need adjusting (e.g. sess_consistent_hash) - these are the defaults from 50-memcached.ini.

This is a minimum viable version - bash script could be elaborated with more error checking etc.

Hello!
And for PHP 7 version how to proceed?