array help

davieboy

hi there.

i am needing some help

i am getting three pieces of info from a user from the variable $message
[1][2][3] and i want to echo out the [3] part.

how would i go about doing this?

Jocke

If $message is an array with three elements:

echo $message[0] //First element
echo $message[1] //Second element
echo $message[2] //Third element

davieboy

how do i make it an array,

basically it is the following info

parta partb partc

i want to be able to extract partc and echo it

David

Jocke

parta partb partc

Does this mean that the data is one string and has three parts divided by " "? In that case:

$array = explode(" ",$message);

davieboy

have tried that, its giving me the 3rd letter not the third word in the phrase

Jocke

Could you post the part of your code that is not working?

davieboy

$array = explode(" ",$message);
$check = @fsockopen($message[2], 80); 

if ($check) { 
echo "$site is up"; 
} 
else { 
echo "$site is down"; 
}

the message is PARTA PARTB PARTC
the message it should be echoing is PARTC

David

Jocke

try this

$array = explode(" ",$message); 
$check = @fsockopen($array[2], 80);  

if ($check) {  

echo "$site is up";  

}  

else {  

echo "$site is down";  

}

davieboy

thats giving the invalid resource id error

David

wad

I just managed to complete what you are asking.

I have a script which passes many variables through $_GET, one of them in format "n,n1,n2,n3,nn,". This is just a variable, but I needed it in an array to properly display it all.

I started with:

$results = $_GET['results'];

I then put it into an array:

$explodeResults = explode (",", $results);

If I know exactly what piece I want to echo, I can say:

echo $explodeResults[2];

Which actually echos the third item in the array. If I don't know what I want, but want to see everything, I can say:

for ($i = 0; $i < $n; $i++)
{
     $arrayNum = $i + 1;
     echo ("Item $arrayNum of the array contains value $explodeResults[$i]");
}

And from there, I can see the entire array and what values it contains.

Note, in the above example, I increase the count number by 1, so it's easier to know where it is in the array. People tend to count starting from 1, whereas arrays start counting from 0.

I hope this helps 🙂

wad

Given your code:

$check = @fsockopen ("hostname", 80, $errorno, $errorstr, 30);

if (!$check)
{   

     $message = "down $errorno";
}   

else
{   

     $message = "up $errorno";   

}

$array = explode (" ",$message);

fclose ($check);

echo ("The site is currently $array[0] with status code $array[1]");

I'm fairly certain that will work. Basically, what's happening there is we are telling the system we are opening a connection to "hostname" on port 80. Any error numbers or error messages will be passed on the next 2 variables. The timeout is in seconds.

If fsockopen() doesn't return properly, the site is considered down, and an error code is generated. If fsockopen() returns properly, the site is considered up and another better error code is generated.

Then the result is echoed using an array.

I hope this works out for you. I couldn't test it.

More info: http://ca.php.net/fsockopen

davieboy

cheers

the think is the hsotname is actually contained in partc of $message

thats y i need to try to get it

David

wad

If this is for a personal site so users can see site status, statically defining the hostname part won't be bad.

If you are writing a script to allow for checking of remote sites, you should be using a different approach.

But did what I post help you, or help in understanding?

Jocke

Are you certain the variables actually contain the data you're expecting? I suggest that you go through your code again. This time, make sure the variables contain the data you expect by echoing the variables to the screen.

davieboy

i guess another way around it might be to ignore ALL data before the partc

so how would i ignore parta partb?

David

davieboy

i have managed to use the split() command to split the phrase

$text = $message;
$array = split (" ", $text );
$i = 0;
foreach ( $array as $item )
{
  if ($i = 1)
  {
    $domain = $item;
  }
  print "<br>";
}
$check = @fsockopen($domain, 80) ;

if ($check) {   

echo "$domain is up<br>";   

}   

else {   

echo "$domain is down<br>";   

}

now i am getting a Resource error #1 on the $check line.

Anyone see why?im stumped