PHP problems on verification of server offline/online

[Ace]

if (always_true){

I can use this? or is this just an example?

[console]

In theory, like this...

<?php
$fp = fsockopen("udp://74.54.186.226", 27910, $errno, $errstr);
if (!$fp) {
    echo "ERROR: $errno - $errstr<br />\n";
} else {
    fwrite($fp, "ÿÿÿÿping\n");
    $coutput = fread($fp, 26);
    $cresponse = "ack\n";

if(strstr($coutput,$cresponse)){
echo "print HTML server up";
}

else{
echo "print HTML server down";
}

fclose($fp);
}
?>

(Not sure about where it reads exactly 26 characters, though.)

[Ace]

OK whats wrong the code below?  Its still showing them all as online when only 3 servers are up! Remember I am trying to to do 12 servers at once for testing, not just 1, so some of your code may not apply...  or my code can be simplified?

<?php
$serv1 = @fsockopen("udp://www.aceintergraphs.com", 27910, $errno, $errstr);
$serv2 = @fsockopen("udp://www.aceintergraphs.com", 27911, $errno, $errstr);
$serv3 = @fsockopen("udp://www.aceintergraphs.com", 27912, $errno, $errstr);
$serv4 = @fsockopen("udp://www.aceintergraphs.com", 27913, $errno, $errstr);
$serv5 = @fsockopen("udp://www.aceintergraphs.com", 27914, $errno, $errstr);
$serv6 = @fsockopen("udp://www.aceintergraphs.com", 27915, $errno, $errstr);
$serv7 = @fsockopen("udp://www.aceintergraphs.com", 27916, $errno, $errstr);
$serv8 = @fsockopen("udp://www.aceintergraphs.com", 27917, $errno, $errstr);
$serv9 = @fsockopen("udp://www.aceintergraphs.com", 27918, $errno, $errstr);
$serv10 = @fsockopen("udp://www.aceintergraphs.com", 27919, $errno, $errstr);
$serv11 = @fsockopen("udp://www.aceintergraphs.com", 27920, $errno, $errstr);
$serv12 = @fsockopen("udp://www.aceintergraphs.com", 27921, $errno, $errstr);
if (!$serv1){
   echo '<br>Fezonia';
   echo '<img src="images/soffline.gif" width="100" height="8" alt="The Fezonia Realm is Offline">';
}else{
    fwrite($serv1, "����ping\n");
   fread($serv1, 26);
   echo '<br>Fezonia';
   echo '<img src="images/sonline.gif" width="100" height="8" alt="The Fezonia Realm is Online">';
   fclose($serv1);
}
if (!$serv2){
   echo '<br>Feasa';
   echo '<img src="images/soffline.gif" width="100" height="8" alt="The Feasa Realm is Offline">';
}else{
   fwrite($serv2, "����ping\n");
    fread($serv2, 26);
   echo '<br>Feasa';
   echo '<img src="images/sonline.gif" width="100" height="8" alt="The Feasa Realm is Online">';
   fclose($serv2);
}
if (!$serv3){
    echo '<br>Harlband';
   echo '<img src="images/soffline.gif" width="100" height="8" alt="The Harlband Real is Offline">';
}else{
   fwrite($serv3, "����ping\n");
   fread($serv3, 26);
   echo '<br>Harlband';
   echo '<img src="images/sonline.gif" width="100" height="8" alt="The Harlband Real is Online">';
   fclose($serv3);
}
if (!$serv4){
   echo '<br>Sodoara';
   echo '<img src="images/soffline.gif" width="100" height="8" alt="The Sodoara Real is Offline">';
}else{
   fwrite($serv4, "����ping\n");
   fread($serv4, 26);
   echo '<br>Sodoara';
   echo '<img src="images/sonline.gif" width="100" height="8" alt="The Sodoara Real is Online">';
   fclose($serv4);   
}
if (!$serv5){
   echo '<br>Binndroa';
   echo '<img src="images/soffline.gif" width="100" height="8" alt="The Binndroa Real is Offline">';
}else{
   fwrite($serv5, "����ping\n");
   fread($serv5, 26);
   echo '<br>Binndroa';
   echo '<img src="images/sonline.gif" width="100" height="8" alt="The Binndroa Real is Online">';
   fclose($serv5);
}
if (!$serv6){
   echo '<br>Elboria';
   echo '<img src="images/soffline.gif" width="100" height="8" alt="The Elboria Realm is Offline">';
}else{
   fwrite($serv6, "����ping\n");
   fread($serv6, 26);
   echo '<br>Elboria';
   echo '<img src="images/sonline.gif" width="100" height="8" alt="The Elboria Realm is Online">';
   fclose($serv6);
}
if (!$serv7){
   echo '<br>Eskaara';
   echo '<img src="images/soffline.gif" width="100" height="8" alt="The Eskaara Real is Offline">';
}else{
   fwrite($serv7, "����ping\n");
   fread($serv7, 26);
   echo '<br>Eskaara';
   echo '<img src="images/sonline.gif" width="100" height="8" alt="The Eskaara Real is Online">';
   fclose($serv7);
}
if (!$serv8){
   echo '<br>Eldorian';
   echo '<img src="images/soffline.gif" width="100" height="8" alt="The Eldorian Realm is Offline">';
}else{
   fwrite($serv8, "����ping\n");
   fread($serv8, 26);
   echo '<br>Eldorian';
   echo '<img src="images/sonline.gif" width="100" height="8" alt="The Eldorian Realm is Online">';
   fclose($serv8);
}
if (!$serv9){
   echo '<br>Shamka';
   echo '<img src="images/soffline.gif" width="100" height="8" alt="The Shamka Realm is Offline">';
}else{
   fwrite($serv9, "����ping\n");
   fread($serv9, 26);
   echo '<br>Shamka';
   echo '<img src="images/sonline.gif" width="100" height="8" alt="The Shamka Realm is Online">';
   fclose($serv9);
}
if (!$serv10){
    echo '<br>Redaila';
   echo '<img src="images/soffline.gif" width="100" height="8" alt="The Redaila Realm is Offline">';
}else{
   fwrite($serv10, "����ping\n");
   fread($serv10, 26);
   echo '<br>Redaila';
   echo '<img src="images/sonline.gif" width="100" height="8" alt="The Redaila Realm is Online">';
   fclose($serv10);
}
if (!$serv11){
   echo '<br>Skara';
   echo '<img src="images/soffline.gif" width="100" height="8" alt="The Skara Realm is Offline">';
}else{
   fwrite($serv11, "����ping\n");
   fread($serv11, 26);
   echo '<br>Skara';
   echo '<img src="images/sonline.gif" width="100" height="8" alt="The Skara Realm is Online">';
   fclose($serv11);
}
if (!$serv12){
    echo '<br>Prison';
   echo '<img src="images/soffline.gif" width="100" height="8" alt="The Prison is Offline">';
}else{
   fwrite($serv12, "����ping\n");
   fread($serv12, 26);
   echo '<br>Prison';
   echo '<img src="images/sonline.gif" width="100" height="8" alt="The Prison is Online">';
   fclose($serv12);
}
?>

[console]

if (always_true){

I can use this? or is this just an example?

Sir, I'm going to have to ask you to step away from the keyboard.

[Ace]

Sorry Mr. Moderator, but spending 2 to 3 days working on somehting that don;t work experiementing with all types of commands, I begin to wonder....  I do not know PHP that well you know, only enouhg to blow up buildings! 

[reaper]

 

I don't know what the 26 is from.  I just grabbed the example from the fopensocket UDP documentation and altered it a bit.  However after changing the parameters, reading 26 bytes seemed fine, because I got the challange response back.  I believe it is reading 26bytes passed the UDP header.

Ace: you are sending a packet, and saying..if I send a packet the server is up.  See quadz post on the conditional.  You have been showing us a script that is saying basically (if x=x, then server is up).  This is because you don't test the response from the server.  You send a packet and say if you can send a packet the server is up.  The protocol is UDP so for the function to return something normal it doesn't have to do anything but send a packet.

[reaper]

I always think PHP looks weird, it almost looks like plain writing.  I like Perl better I think.


 

edit: FYI the Q2 net protocol has been decoded, although for just doing the challenge you don't need the decoder.  but if you want to look at it, check out wireshark and the q2 decoder.  They will show you the meaning of bytes at certain offsets in the communication.

[console]

Sorry Mr. Moderator, but spending 2 to 3 days working on somehting that don;t work experiementing with all types of commands

This is written in a dickish way, but it makes some good points:

http://www.catb.org/~esr/faqs/smart-questions.html

In particular, "So, while it isn't necessary to already be technically competent to get attention from us, it is necessary to demonstrate the kind of attitude that leads to competence..."

  *  *  *

Programming requires taking the time to understand precisely what you're telling the system to do, and to understand precisely what you expect from the system in response.

You keep pasting code with lines like the following:

  if (!$serv1)

Most of the responses from reaper and me so far have highlighted the problems with how statements like if (!$serv1) are being used in your code.

So let me ask you this: What do you think if (!$serv1) is telling the system to do?

There are really no shortcuts here.  You'll need to understand what each line of your program is doing and why.

[Ace]

I had an issue:  I uised your guys ideas, it still does nto work, and even though all statatements are simular only 3 servers are getting this error on my hTML web page Warning:

Warning: fwrite(): 17 is not a valid stream resource in F:\xampp\htdocs\onlinestatus.php on line 188

But this is teh Code so far:

<?php
$serv1 = @fsockopen("udp://aceintergraphs.com", 27910, $errno, $errstr);
$serv2 = @fsockopen("udp://aceintergraphs.com", 27911, $errno, $errstr);
$serv3 = @fsockopen("udp://aceintergraphs.com", 27912, $errno, $errstr);
$serv4 = @fsockopen("udp://aceintergraphs.com", 27913, $errno, $errstr);
$serv5 = @fsockopen("udp://aceintergraphs.com", 27914, $errno, $errstr);
$serv6 = @fsockopen("udp://aceintergraphs.com", 27915, $errno, $errstr);
$serv7 = @fsockopen("udp://aceintergraphs.com", 27916, $errno, $errstr);
$serv8 = @fsockopen("udp://aceintergraphs.com", 27917, $errno, $errstr);
$serv9 = @fsockopen("udp://aceintergraphs.com", 27918, $errno, $errstr);
$serv10 = @fsockopen("udp://aceintergraphs.com", 27919, $errno, $errstr);
$serv11 = @fsockopen("udp://aceintergraphs.com", 27920, $errno, $errstr);
$serv12 = @fsockopen("udp://aceintergraphs.com", 27921, $errno, $errstr);

if (!$serv1){
    echo "ERROR: $errno - $errstr<br />\n";
}else{
   fwrite($serv1, "ÿÿÿÿping\n");
   $read1 = fread($serv1, 26);
    $res1 = "ack\n";
   
if(strstr($read1,$res1)){
   echo '<br>Fezonia';
   echo '<img src="images/soffline.gif" width="100" height="8" alt="The Fezonia Realm is Offline">';
}else{
   echo '<br>Fezonia';
   echo '<img src="images/sonline.gif" width="100" height="8" alt="The Fezonia Realm is Online">';
}
fclose($serv1);
}

if (!$serv2){
    echo "ERROR: $errno - $errstr<br />\n";
}else{
   fwrite($serv2, "ÿÿÿÿping\n");
   $read2 = fread($serv2, 26);
    $res2 = "ack\n";
   
if(strstr($read2,$res2)){
   echo '<br>Feasa';
   echo '<img src="images/soffline.gif" width="100" height="8" alt="The Feasa Realm is Offline">';
}else{
   echo '<br>Feasa';
   echo '<img src="images/sonline.gif" width="100" height="8" alt="The Feasa Realm is Online">';
}
fclose($serv2);
}

if (!$serv3){
    echo "ERROR: $errno - $errstr<br />\n";
}else{
   fwrite($serv3, "ÿÿÿÿping\n");
   $read3 = fread($serv3, 26);
    $res3 = "ack\n";
   
if(strstr($read3,$res3)){
   echo '<br>Harlband';
   echo '<img src="images/soffline.gif" width="100" height="8" alt="The Harlband Realm is Offline">';
}else{
   echo '<br>Harlband';
   echo '<img src="images/sonline.gif" width="100" height="8" alt="The Harlband Realm is Online">';
}
fclose($serv3);
}

if (!$serv4){
    echo "ERROR: $errno - $errstr<br />\n";
}else{
   fwrite($serv4, "ÿÿÿÿping\n");
   $read4 = fread($serv4, 26);
    $res4 = "ack\n";
   
if(strstr($read4,$res4)){
   echo '<br>Sodoara';
   echo '<img src="images/soffline.gif" width="100" height="8" alt="The Sodoara Realm is Offline">';
}else{
   echo '<br>Sodoara';
   echo '<img src="images/sonline.gif" width="100" height="8" alt="The Sodoara Realm is Online">';
}
fclose($serv4);
}

if (!$serv5){
    echo "ERROR: $errno - $errstr<br />\n";
}else{
   fwrite($serv5, "ÿÿÿÿping\n");
   $read5 = fread($serv5, 26);
    $res5 = "ack\n";
   
if(strstr($read5,$res5)){
   echo '<br>Binndroa';
   echo '<img src="images/soffline.gif" width="100" height="8" alt="The Binndroa Realm is Offline">';
}else{
   echo '<br>Binndroa';
   echo '<img src="images/sonline.gif" width="100" height="8" alt="The Binndroa Realm is Online">';
}
fclose($serv5);
}

if (!$serv6){
    echo "ERROR: $errno - $errstr<br />\n";
}else{
   fwrite($serv6, "ÿÿÿÿping\n");
   $read6 = fread($serv6, 26);
    $res6 = "ack\n";
   
if(strstr($read6,$res6)){
   echo '<br>Elboria';
   echo '<img src="images/soffline.gif" width="100" height="8" alt="The Elboria Realm is Offline">';
}else{
   echo '<br>Elboria';
   echo '<img src="images/sonline.gif" width="100" height="8" alt="The Elboria Realm is Online">';
}
fclose($serv6);
}

if (!$serv7){
    echo "ERROR: $errno - $errstr<br />\n";
}else{
   fwrite($serv7, "ÿÿÿÿping\n");
   $read7 = fread($serv7, 26);
    $res7 = "ack\n";
   
if(strstr($read7,$res7)){
   echo '<br>Eskaara';
   echo '<img src="images/soffline.gif" width="100" height="8" alt="The Eskaara Realm is Offline">';
}else{
   echo '<br>Eskaara';
   echo '<img src="images/sonline.gif" width="100" height="8" alt="The Eskaara Realm is Online">';
}
fclose($serv7);
}

if (!$serv8){
    echo "ERROR: $errno - $errstr<br />\n";
}else{
   fwrite($serv8, "ÿÿÿÿping\n");
   $read8 = fread($serv8, 26);
    $res8 = "ack\n";
   
if(strstr($read8,$res8)){
   echo '<br>Eldorian';
   echo '<img src="images/soffline.gif" width="100" height="8" alt="The Eldorian Realm is Offline">';
}else{
   echo '<br>Eldorian';
   echo '<img src="images/sonline.gif" width="100" height="8" alt="The Eldorian Realm is Online">';
}
fclose($serv8);
}

if (!$serv9){
    echo "ERROR: $errno - $errstr<br />\n";
}else{
   fwrite($serv9, "ÿÿÿÿping\n");
   $read9 = fread($serv9, 26);
    $res9 = "ack\n";
   
if(strstr($read9,$res9)){
   echo '<br>Shamka';
   echo '<img src="images/soffline.gif" width="100" height="8" alt="The Shamka Realm is Offline">';
}else{
   echo '<br>Shamka';
   echo '<img src="images/sonline.gif" width="100" height="8" alt="The Shamka Realm is Online">';
}
fclose($serv9);
}

if (!$serv10){
    echo "ERROR: $errno - $errstr<br />\n";
}else{
   fwrite($serv10, "ÿÿÿÿping\n");
   $read10 = fread($serv10, 26);
    $res10 = "ack\n";
   
if(strstr($read10,$res10)){
   echo '<br>Redaila';
   echo '<img src="images/soffline.gif" width="100" height="8" alt="The Redaila Realm is Offline">';
}else{
   echo '<br>Redaila';
   echo '<img src="images/sonline.gif" width="100" height="8" alt="The Redaila Realm is Online">';
}
fclose($serv11);
}

if (!$serv11){
    echo "ERROR: $errno - $errstr<br />\n";
}else{
   fwrite($serv11, "ÿÿÿÿping\n");
   $read11 = fread($serv11, 26);
    $res11 = "ack\n";
   
if(strstr($read11,$res11)){
   echo '<br>Skara';
   echo '<img src="images/soffline.gif" width="100" height="8" alt="The Skara Realm is Offline">';
}else{
   echo '<br>Skara';
   echo '<img src="images/sonline.gif" width="100" height="8" alt="The Skara Realm is Online">';
}
fclose($serv11);
}

if (!$serv12){
    echo "ERROR: $errno - $errstr<br />\n";
}else{
   fwrite($serv12, "ÿÿÿÿping\n");
   $read12 = fread($serv12, 26);
    $res12 = "ack\n";
   
if(strstr($read12,$res12)){
   echo '<br>Prison';
   echo '<img src="images/soffline.gif" width="100" height="8" alt="The Prison is Offline">';
}else{
   echo '<br>Prison';
   echo '<img src="images/sonline.gif" width="100" height="8" alt="The Prison is Online">';
}
fclose($serv12);
}
?>

[Ace]

Sorry Mr. Moderator, but spending 2 to 3 days working on somehting that don;t work experiementing with all types of commands

This is written in a dickish way, but it makes some good points:

http://www.catb.org/~esr/faqs/smart-questions.html

In particular, "So, while it isn't necessary to already be technically competent to get attention from us, it is necessary to demonstrate the kind of attitude that leads to competence..."

  *  *  *

Programming requires taking the time to understand precisely what you're telling the system to do, and to understand precisely what you expect from the system in response.

You keep pasting code with lines like the following:

  if (!$serv1)

Most of the responses from reaper and me so far have highlighted the problems with how statements like if (!$serv1) are being used in your code.

So let me ask you this: What do you think if (!$serv1) is telling the system to do?

There are really no shortcuts here.  You'll need to understand what each line of your program is doing and why.

Your right, but if I am pissing you off I am sorry, or upsetting you....  when I program I play by ear and copy then create, I may not understand all the functions, but 75% of the time I have success, and I carry on my merry way not truely understanding what I just did, but eventually I will learn, I did this with Basic Programming untill I Understood it, its my process of learning,, sure later down the road I learn the rights and wrongs, but you got to remember the last month is my first time dabbling in PHP, and you have to admit its pretty damn good for amature, thats if you had been watching my web page ror even had the time to and seen the things I have done using PHP.  So yes, I am a compleate idiot, so forgive me....  BUT THATS NOT STOPPING ME FROM TRYING! 

[reaper]

There is no newline after the acknowledgement

[Ace]

There is no newline after the acknowledgement

If your refering to the code, I will look into it, if not ???  Also why is it still stating the servers are online?  If its the

if (!$serv){

bits let me know instead of beating arround the bush, I am dumb remember?

[Ace]

ok I fixed that part, but still showing servers online when they are not....  so tell me guys, what am I doing wrong?

[reaper]

ok I fixed that part, but still showing servers online when they are not....  so tell me guys, what am I doing wrong?

not reading the link quadz posted

get rid of the newline that you're searching for, because you don't need to search the response for it

if you do find an acknowledgment in the response, do you want to show the server as online or offline?

[Ace]

This is the function response the code is supposed to do in Basic:

If Server1 is Online, then display the picture and name of server on the HTML page corrisponding to it being Online,
Else Server1 is Offline, then display the picture and name of server on the HTML page corrisponding to it being Offline.

Same for the rest of the servers, see www.aceintergraphs.com for example at the left side panel....

Currently they all are Green, so sdo you have a sample code, that would do this, using the same code as above, just corrected?  I can type up the rest, and fix it up.