Apache + fastcgi + php mode, how to implement socket persistent connection, such as the mysql_pconnect function

Apache + fastcgi + php mode, how to implement socket persistent connection, apache + fastcgi + php mode like mysql_pconnect function, how to implement socket persistent connection, like mysql_pconnect function, the socket does not have the connection length problem. as long as you keep on going, apache + fastcgi + php mode, how does one implement the socket persistent connection, like the mysql_pconnect function?
Apache + fastcgi + php mode, how to implement socket persistent connection, such as the mysql_pconnect function

------ Solution --------------------
The socket does not have the connection length problem. as long as you keep on going, it will be connected (except for network faults, power loss, and on-premise servers)
The lifecycle of php under apache + fastcgi + php is an HTTP session, so the socket initiated by php ends with the completion of the php process.

Of course, php also provides pfsockopen for your use.