PHP opinion voting box suitable for personal homepage_PHP tutorial

For moderators, it is very useful information to know whether their homepage is popular, what aspects are popular, what aspects need to be improved, etc. Putting an opinion voting box on your homepage can collect visitors' opinions in a timely manner, which will be of great help to the construction of the website. Below is an opinion ballot box page written in PHP. This page will be refreshed after each vote to display the number and percentage of various votes.

----------------------vote.php------------------ ----------

if(isset($Submit)) //If new content is submitted
{
if(!file_exists("voterec.txt"))
{
/ /The number of votes is 0
$voterec = array(0, 0, 0, 0, 0);
}
else
{
//Read the voting record
$voterec = file("voterec.txt");
}
//Update voting record
$voterec[$vote - 1] += 1;
//Write new vote Record
$fp = fopen("voterec.txt", "w+");
$total = 0;
for($i = 0; $i {
$voterec[$i] = chop($voterec[$i]);
$total += $voterec[$i];
fwrite($fp, $voterec[$i] ." ");
}
fclose($fp);
}
?>