Open persistent Internet or Unix domain socket connection
(PHP 3>= 3.0.7, PHP 4 )
int pfsockopen ( stringhostname, intport [, interrno [, stringerrstr [, inttimeout]]] )
This function behaves exactly as fsockopen()
with the difference that the connection is not closed after the
script finishes. It is the persistent version of
fsockopen().