用PHP为每个页面点击计数器

我想在我的网页上集成一个计数器,因为我已经这样做了,所以计数器可以工作。但我真正想要的是,这个计数器对于每个要生成的页面都是特定的 id

<?php

session_start();

$counter_name = 'counter'.$id.'.txt';
// Check if a text file exists. If not create one and initialize it to zero.
if (!file_exists($counter_name)) {
  $f = fopen($counter_name, "w");
  fwrite($f,"0");
  fclose($f);
}
// Read the current value of our counter file
$f = fopen($counter_name,"r");
$counterVal = fread($f, filesize($counter_name));
fclose($f);
// Has visitor been counted in this session?
// If not, increase counter value by one
if(!isset($_SESSION['hasVisited'])){
  $_SESSION['hasVisited']="no";
  $counterVal++;
  $f = fopen($counter_name, "w");
  fwrite($f, $counterVal);
  fclose($f); 
}
else {
    $counterVal++;
    $f = fopen($counter_name, "w");
    fwrite($f, $counterVal);
    fclose($f);
}
$counterVal = str_pad($counterVal, 5, "0", STR_PAD_LEFT);
$chars = preg_split('//', $counterVal);
$im = imagecreatefrompng("canvas.png");
$src1 = imagecreatefrompng("$chars[1].png");
$src2 = imagecreatefrompng("$chars[2].png");
$src3 = imagecreatefrompng("$chars[3].png");
$src4 = imagecreatefrompng("$chars[4].png");
$src5 = imagecreatefrompng("$chars[5].png");
imagecopymerge($im, $src1, 0, 0, 0, 0, 15, 15, 100);
imagecopymerge($im, $src2, 15, 0, 0, 0, 15, 15, 100);
imagecopymerge($im, $src3, 30, 0, 0, 0, 15, 15, 100);
imagecopymerge($im, $src4, 45, 0, 0, 0, 15, 15, 100);
imagecopymerge($im, $src5, 60, 0, 0, 0, 15, 15, 100);
// Output and free from memory
header('Content-Type: image/png');
echo imagepng($im);
imagedestroy($im);
?>

前任。

page 1 count: 100 
page 2 count: 100

刷新50倍后第1页

page 1 count: 150
page 2 count: 150

文件名为 counter.php

 <img style="padding-left: 2px;" alt="Hit counter" src="http://www.example.com/counter/counter.php" />

我一直在寻找解决方案,但至今没有找到任何解决方案。
提前谢谢。

顺致敬意,