Returns a FTP stream on success or
FALSE on error.
ftp_connect() opens an FTP
connection to the specified
host. The port
parameter specifies an alternate port to connect to. If it is
omitted or set to zero, then the default FTP port, 21, will
be used.
The timeout parameter
specifies the timeout for all subsequent network operations.
If omitted, the default value is 90 seconds. The timeout can
be changed and queried at any time with
ftp_set_option() and
ftp_get_option().
注: The timeout parameter became available in PHP 4.2.0.