How to Reset Counter when 5 is reached - php

Question

can someone help me with a reset for a mysql counter. here is the code
$host="localhost"; // Host name
$username=""; // Mysql username
$password=""; // Mysql password
$db_name="test"; // Database name
$tbl_name="members"; // Table name
// Connect to server and select database.
mysql_connect("$host", "$username", "$password")or die("cannot connect to server ");
mysql_select_db("$db_name")or die("cannot select DB");
$sql="SELECT * FROM $tbl_name";
$result=mysql_query($sql);
$rows=mysql_fetch_array($result);
$counter=$rows['counter'];
// if have no counter value set counter = 1
if(empty($counter)){
$counter=1;
$sql1="INSERT INTO $tbl_name(counter) VALUES('$counter')";
$result1=mysql_query($sql1);
}
echo "You 're visitors No. ";
echo $counter;
// count more value
$addcounter=$counter+1;
// reset counter if 5 has been reached
If (counter==5){
echo "counter=5 ";
// now im getting an error here//
counter=0;
}
$sql2="update $tbl_name set counter='$addcounter'";
$result2=mysql_query($sql2);
mysql_close();
?>
the error is:
Parse error: syntax error, unexpected '=' in C:\xampp\htdocs\test\counter.php on line
and based on // counter=0

Answer 1

you forgot $:
$counter=0;
counter on it's own is not a variable, additionally in your update query, you most likely after 0 value if you reached 5
If ($counter==5){
echo "counter=5 ";
$counter=0;
$addcounter=0;
}

Answer 2

this is the corrct working code.
<?php
$host="localhost"; // Host name
$username="root"; // Mysql username
$password=""; // Mysql password
$db_name="gametest"; // Database name
$tbl_name="counter"; // Table name
// Connect to server and select database.
mysql_connect("$host", "$username", "$password")or die("cannot connect to server ");
mysql_select_db("$db_name")or die("cannot select DB");
$sql="SELECT * FROM $tbl_name";
$result=mysql_query($sql);
$rows=mysql_fetch_array($result);
$counter=$rows['counter'];
// if have no counter value set counter = 1
if(empty($counter)){
$counter=1;
$sql1="INSERT INTO $tbl_name(counter) VALUES('$counter')";
$result1=mysql_query($sql1);
}
echo "You 're visitors No. ";
echo $counter;
// count more value
$addcounter=$counter+1;
// reset counter if 5 has been reached
If ($counter==5){
$counter=0;
$addcounter=0;
}
$sql2="update $tbl_name set counter='$addcounter'";
$result2=mysql_query($sql2);
mysql_close();
?>