[Unit]
Description=AloVoice Service
Requires=mysqld.service memcached.service 
After=mysqld.service memcached.service

[Service]
User=root
Type=simple
TimeoutSec=0
PIDFile=/var/run/amibx.pid
ExecStart=/usr/bin/php -f /var/www/html/bx24/listener.php test> /dev/null 2>/dev/null
ExecStop=/bin/kill -HUP $MAINPID #It's the default you can change whats happens on stop command
ExecReload=/bin/kill -HUP $MAINPID
KillMode=process

Restart=on-failure
RestartSec=42s

StandardOutput=null #If you don't want to make toms of logs you can set it null if you sent a file or some other options it will send all php output to this one.
StandardError=/var/log/myphpdaemon.log
[Install]
WantedBy=default.target