Please Help I need some help with MySql and PHP

[Buck_NAkie]

Ok people I am new to programming so if this is really simple please don't laugh.


Hi All below you find a a chunk of code I need help finishing. What I am trying to do is get the total changes in one column called status. I can use the getICMSData to retrieve data then if I could get it to populate the $newcount then output to a .txt file. Right now my code works if I hard code a number into the $newcount. Idealy I would like to get that number from the my GetICMSData or if there is another way that is cool as well. If I am not clear please reply asking questions.

PHP Code:

<?
function CountDefUpdates ()
{
//GetICMSData

UpdateICMS("UPDATE desktops SET status = \"dupend\" WHERE status = \"installed\" AND spy_policy_index = 2",$link);

$newcount = 

$file="count.txt";

$fh1=fopen($file,"r");
$count=fscanf($fh1,"%d");
fclose($fh1);

//echo $newcount;
//echo $count[0];

$fh=fopen($file,"w+");
$count[0]=$count[0]+$newcount;

fprintf($fh,"%d",$count[0]);
fclose($fh);

}
?>

[sde]

what does count.txt look like? what exactly is going on in that file? is it a file just containing 1 number? are you sure it is writable by apache or your web server? ( chmod 666 count.txt )

[Buck_NAkie]

count.txt is a text file that can be written to. If I hard code a number like this $newcount = (10) then on my text file the count goes up by 10 every time I refresh my screen.

[sde]

Originally Posted by sde

is it a file just containing 1 number?

does the file look like this:

50

or is it formatted like this

10
20
30
40
50

[redhead]

hmmmm.... What happens for the very first time..

$newcount = 

$file="count.txt"; 

$fh1=fopen($file,"r"); 
$count=fscanf($fh1,"%d"); 
fclose($fh1); 

$fh=fopen($file,"w+"); 
$count[0]=$count[0]+$newcount;

Assuming the count.txt is empty, and since your newcount is empty, theres nothing written to the file, on next read we have the same problem..
If your file contains a number (say 1) then on your $count[0]=$count[0]+$newcount; you have the same problem, the counter isn't incremented, since $newcount isn't holding anything..
On another note, I doubt this code will even run..
$newcount= is an undisclosed statement, which usualy causes an error.

[Buck_NAkie]

Thanks for looking

SDE the out put is a single number that gets overwritten everytime.

redhead:here is the code my question is how do I put a number from my query into newcount

PHP Code:

function CountDefUpdates ()
{
    $newcount = GetICMSData ("SELECT COUNT(*) FROM desktops WHERE status=\"installed\"",$link);

    UpdateICMS("UPDATE desktops SET status = \"dupend\" WHERE status = \"installed\"AND spy_policy_index = 2",$link);

  //$newcount =(10);

  $file="count.txt";

  $fh1=fopen($file,"r");
  $count=fscanf($fh1,"%d");
  fclose($fh1);

  //echo $newcount;
  //echo $count[0];

  $fh=fopen($file,"w+");
  $count[0]=$count[0]+$newcount;

  fprintf($fh,"%d",$count[0]);
  fclose($fh);

} 


[redhead]

hmmm.. I havn't used this type of account holding, but from my point the $count=fscanf($fh1,"%d"); will let $count hold the value in the file (if the file only holds one number) thus the statement $count[0] won't return the correct value, instead $count will be the way to get the number.
How about something like:

PHP Code:

fscanf($fh1, "%[0-9]", $count); 


Your $newcount should be formed in the way, where $newcount[0] is holding the actual value, thus you would need to make your increment line something like:

PHP Code:

$count+=$newcount[0]; 


:: edit
I just realize, I dont even know what your GetICMSData() is doing, so I can't comment on wether $newcount is the value or $newcount[0], my suggestion was formed given the fact, that

PHP Code:

$res = mysql_query("SELECT COUNT(*)...");
value = mysql_fetch_array($res); 


makes $value hold the number in the way I describe $newcount.

[redhead]

I just looked through the code, and if I were to make it I'd probably do it something like this, assuming GetICMSData() is returning the number instead of an array with the number.

PHP Code:

function CountDefUpdates () 
{ 
    $newcount = GetICMSData ("SELECT COUNT(*) FROM desktops WHERE status=\"installed\"",$link); 
    UpdateICMS("UPDATE desktops SET status = \"dupend\" WHERE status = \"installed\"AND spy_policy_index = 2",$link); 

  $file="count.txt"; 

  $fp=fopen($file,"r+"); // make it read and write accessible 
  $ret = fscanf($fp, "%[0-9]", $count);
  if(!$ret)
    $count = 0;           // catch if the file is empty
  fseek($fp, 0);          // rewind to start of file, to prepare for writing
  fprintf($fp, "%d", $count+$newcount);
  fclose($fp); 
} 


[Buck_NAkie]

thanks for the help but i quess this is way over my head. I cannot get the output to show up in the count.txt.

thanks again

[DJMaze]

it's easy

PHP Code:

$res = mysql_query("SELECT COUNT(*)...");
// mysql_fetch_array and mysql_fetch_assoc are slower and not important here
list($newcount) =  mysql_fetch_row($res);

++$newcount; // increase the number

$file="count.txt"; 
if ($fh=fopen($file,"w+")) {
  fwrite($fh,$newcount);
  fclose($fh);
}