Simple code example of php counter

/*
* Example 1, text file recording data
* edit bbs.it-home.org
*/
$counter=1;
if(file_exists( "mycounter.txt")){
$fp=fopen("mycounter.txt","r");
$counter=fgets($fp,9);
$counter++;
fclose($fp);
}
$fp=fopen("mycounter.txt","w");
fputs($fp,$counter);
fclose($fp);
echo "You are the ".$counter." Visits to this page!
$result=mysql_query("use db_counter");
$re=mysql_query("select * from tb_counter");
$result=mysql_fetch_row($re);
$counter=$result[0];
echo "You Is the {$counter}th visitor! ";
$counter+=1;echo "{$counter}";
mysql_query("update tb_counter set counter=$counter");
mysql_close($conn) ;
//Just a simple counter, you can add the function to prevent repeated refresh
?>