Here is how you can do it with a socket on php-fpm 7
install socat
apt-get install socat
#!/bin/sh
if echo /dev/null | socat UNIX:/var/run/php/php7.0-fpm.sock - ; then
echo "$home/run/php-fpm.sock connect OK"
else
echo "$home/run/php-fpm.sock connect ERROR"
fi
You can also check if the service is running like this.
service php7.0-fpm status | grep running
It will return
Active: active (running) since Sun 2017-04-09 12:48:09 PDT; 48s ago