PHP - Edit a specific line in a txt file - php

Question

I'm programming a visitcounter for my website...
The textfile should look like this:
index.php: 4 views
contact.php: 6
views etc.
Here is my code:
function set_cookie(){
setcookie("counter", "Don't delete this cookie!", time()+600);
}
function count_views(){
$page = basename($_SERVER['PHP_SELF']);
$file = fopen("counter.txt","r+");
$page_found = false;
if (!isset($_COOKIE['counter'])) {
while (!feof($file)) {
$currentline = fgets($file);
if(strpos($currentline, ":")){
$filecounter = explode(":", $currentline);
$pif = $filecounter[0]; $counterstand = $filecounter[1];
if ($pif == $page) {
$counterstand = intval($counterstand);
$counterstand++;
fseek($file, -1);
fwrite($file, $counterstand);
$page_found = true;
set_cookie();
}
}
}
if (!$page_found) { fwrite($file, $page . ": 1\n"); }
fclose($file);
}
}
And now my problem:
Everytime i visit the page he is not able to update the new value. so at the end it looks like this
home.php: 1
index.php: 1
2222
It looks like he takes the 1 from the correct line after the filename, and prints it at the end of the file...
how can I write the new value in the correct line?

Answer 1

this is another method to store your data in textfile which frequently changed.
function count_views(){
$page = basename($_SERVER['PHP_SELF']);
$filename = "counter.txt";
if (!isset($_COOKIE['counter']))
{
$fh = fopen($filename, 'r+');
$content = #fread($fh,filesize($filename));
$arr_content = json_decode($content, true);
if(isset($arr_content[$page]))
{
$arr_content[$page] = $arr_content[$page]+1;
}
else
{
$arr_content[$page] = 1;
}
$content = json_encode($arr_content);
#ftruncate($fh, filesize($filename));
#rewind($fh);
fwrite($fh, $content);
}
}
here we use a array which key is the page and the value is the counter.
and we store it in json_encode format in it.
whenever we want to update a particular page count. read the json written in file decode it in php array and update the count if page exists or assign 1 with new page if page index not exists in array.
then we again encode it in json and store it in textfile.