段IP的数字小于0或者大于255，则提示出错
$closed='此端口目前处于关闭状态。www.knowsky.com';
$opened='<font color=red>此端口目前处于打开状态！</font>';
$close="关闭";
$open="<font color=red>打开</font>";
$port=array(21,23,25,79,80,110,135,137,138,139,143,443,445,1433,3306,3389);
$msg=array(
'Ftp',
'Telnet',
'Smtp',
'Finger',
'Http',
'Pop3',
'Location Service',
'Netbios-NS',
'Netbios-DGM',
'Netbios-SSN',
'IMAP',
'Https',
'Microsoft-DS',
'MSSQL',
'MYSQL',
'Terminal Services'
);
// 通过IP格式的检查后用数组定义各端口对应的服务名称及状态
echo "<table border=0 cellpadding=15 cellspacing=0>\n";
echo "<tr>\n";
echo "<td align=center><strong>您扫描的IP：<font
color=red>".$remoteip."</font></strong></td>\n";
echo "</tr>\n";
echo "</table>\n";
echo "<table cellpadding=5 cellspacing=1 bgcolor=#636194>\n";
echo "<tr bgcolor=#7371A5 align=center>\n";
echo "<td><span class=style1>端口</span></td>\n";
echo "<td><span class=style1>服务</span></td>\n";
echo "<td><span class=style1>检测结果</span></td>\n";
echo "<td><span class=style1>描述</span></td>\n";
echo "</tr>\n";
// 输出显示的表格
for($i=0;$i<sizeof($port);$i++)
{
$fp = @fsockopen($remoteip, $port[$i], &$errno, &$errstr, 1);
if (!$fp) {
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