Test a webserver for its status<BR>
<FORM METHOD=POST NAME=testserver>
<INPUT TYPE=TEXT NAME=servername value=$servername></INPUT>
<INPUT TYPE=SUBMIT NAME=submit VALUE=test></INPUT>
</FORM>
 1
<?php
if(isset($submit) && $servername != "")
{
if(ereg("([0-9]{1,3}).([0-9]{1,3}).([0-9]{1,3}).([0-9]{1,3})",$servername))
    { 
    echo "SUCCES: String reckognized as IP address<BR>"; 
    $target="ip";
    }
elseif(ereg("([a-zA-Z0-9]{1})*\.([a-zA-Z0-9]{1})*",$servername))
    {
    echo "SUCCES: String reckognized as domain name<BR>";
    $target="dns";
    }
else    {
    echo "FAILURE: String not reckognized as domain name nor IP address<BR>";
    echo "String should be an IP address or a Fully Qualified Domain Name<BR>";
    exit;
    }
if(checkdnsrr($servername)) 
    { 
    echo "SUCCES: $servername is known in DNS<BR>\n"; 
    if($target=="dns") { echo "IP address is ".gethostbyname($servername)."<BR>"; }
    if($target=="ip")  { echo "DNS name is ".gethostbyaddr($servername)."<BR>"; }
    }
else     { 
    echo "FAILURE: $servername is not known in DNS<BR>\n"; 
    }

echo "<BR>Trying to open a socket to \"$servername\" port 80 (HTTP) ...<BR>";
$fp = fsockopen($servername, 80, $errno, $errstr, 4);
if (!$fp) { echo "FAILURE: $errstr ($errno)<br>\n"; } 
else     { 
    fputs ($fp, "HEAD / HTTP/1.0\r\nHost: $servername\r\n\r\n");
    echo "SUCCES: port 80 opened up succesfully<P>\n";
    echo "HEADERS Received:<BR>";
    while(!feof($fp)) { echo fgets($fp,128)."<BR>";}
    fclose ($fp);
    }
}
?>
 1
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