How can i fix add this to my website:

[RunarM]

I want to add a counter to my website, how do i do that?

here is my Counter.php

<? 
    $file = "counter.txt"; 
    if (!file_exists($file)) 
    { 
        touch($file); 
        $handle = fopen($file, 'r+'); 
        $str = "<? \$count=0 ?>"; 
    } 
    else 
    { 
        include "counter.txt"; 
        $count++; 
        $str = "<? \$count=".$count." ?>"; 
        $handle = fopen ($file, 'r+'); 
    } 

    fwrite($handle, $str); 
    fclose($handle); 
    
    echo 'Views: ';
    echo $count; 
?>

and here is the Counter.txt:

<? $count=0 ?>