READ line X

Anon

So far i have this
<?php
$filename = $SCRIPT_PATH . "/businessdb.cfg";
$file = fopen($filename, "r+");
$counter = 0;
while (!(feof($file)))
{
$string = trim(fgets($file, 1024));
list($business, $pas, $phone, $address, $picture, $url, $email, $info) = explode("|", $string);
$counter = $counter + 1;
if ($counter == $number)
{

// do anything here
}
}
fclose($file);
?>

I don't know if its right,,

Basicly all i want to do is it load the info from the testfile
and have it like
http://www.xxxx.com/list.php?number=2
Then it will output line 2,
How do i go about doing it ?

Thanks

Anon

Basically I think you've got it about right. One only other way would be to use 'file' to read the whole file into an array, and then output the required elements of the array. My example below uses 'break' to escape the 'while' loop and stop reading once the required record has been found and output. And there's no need to do the 'explode' until the required rec is found. Also it sets a default of 1 for $number in case it wasn't specified.

<?php
if (!isset($number)) $number=1;
$fp = fopen ("file.txt","r");
$counter = 0;
while ($data = fgets ($fp, 100)) {
$counter++;
if ($counter == $number) {
list($f1,$f2,$f3,$f4)=explode("|",$data);
echo "$counter $f1 $f2 $f3 $f4";
break;
}
}
fclose ($fp);
?>

Anon

You said:

Hi,

That PHP scripted worked 100%,
How i do go about the other way of writeing infomation to the file ?

Thx dan

I assume you mean you want to amend the selected record, and then write it back to the text file, in the same place. Trouble is, this sort of thing is much easier with a database than with a text file.

The simple way is to read the whole file into an array to start (use 'file'). Then replace just the element of the array you've changed, and write the whole array back to the file.

So - assuming you've got your fields to replace all ready:

$newrec = "$f1|$f2|$f3|$f4\r\n";
$fcontents = file ("file.txt");
$fp = fopen ("file.txt","w");
flock ($fp,LOCK_EX);
while (list ($line_num, $rec) = each ($fcontents)) {
if ($line_num == $number) $rec = $newrec;
fputs ($fp,$rec);
}
fclose ($fp);
echo "Line $number updated OK<br>";

Not very pretty, really!