Description

This function checks if there is a service available at the specified port on the specified machine.

Parameter

• string $host - address of the host to check

• string $port - port to check

• string $timeout - time in seconds to wait for response from host

  Important: If you run into timeout problems despite setting this parameter to a reasonably high value, you need to make sure that the configuration directive default_socket_timeout in the php.ini configuration file does not force the maximum timeout down to a lower value.

Return value

boolean - Returns TRUE on success, FALSE on failure.

Note

This function can be called statically.

Example

require_once "Net_Portscan/Portscan.php";

if (Net_Portscan::checkPort("localhost", 80) == NET_PORTSCAN_SERVICE_FOUND) {
    echo "There is a service on localhost on port 80 (" . Net_Portscan::getService(80) . ").\n";
}