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check if a service exists on a port
check if a service exists ona port using PEAR NET_Portscan package
<?php
require_once "/Net/Portscan.php";
if (Net_Portscan::checkPort("localhost", 80) == NET_PORTSCAN_SERVICE_FOUND)
{
echo "Service exists on port 80 (" . Net_Portscan::getService(80) . ").\n";
}
?>
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