PHP website training also talk about PHP website online population statistics

function Checkonline ($userid, $tempid =null)
{
$conn = connect ();
For all users
Set yourself as online first
$stmt = "UPDATE". Db_name. ". USER SET is
$result = Query ($stmt, $conn);
info ($stmt);
If the current user is a visitor
if ($tempid! = null)
{
$stmt = "Select Tempid from". Db_name. ". Tempuser WHERE
Tempid= ". $tempid;
$result = Query ($stmt, $conn);
info ($stmt);
If the visitor is also online
if ($row = Fetch_array ($result))
{
$stmt = "UPDATE". Db_name. ". Tempuser SET
Requesttime= ' ". GetCurrentTime ()." ' WHERE tempid= ". $tempid;
$result = Query ($stmt, $conn);
info ($stmt);
}
The visitor has been offline
Else
{
$stmt = "INSERT into". Db_name. ". Tempuser
VALUES (' ". $tempid." ', ' ". GetCurrentTime ()." ') ";
$result = Query ($stmt, $conn);
info ($stmt);
}
}
View other users
Normal User
$stmt = "UPDATE". Db_name. ". USER SET is
Unix_timestamp (RequestTime) > ". Online_duration. " and usergroupid! = ". GUEST;
$result = Query ($stmt, $conn);
Tourists
$stmt = "DELETE from". Db_name. ". Tempuser WHERE ". Time ()."-
Unix_timestamp (RequestTime) > ". Online_duration;
$result = Query ($stmt, $conn);
Disconnect ($conn);
}
Get online number of users and visitors
function Getonlinenumber ()
{
$olnum = Array ();
$conn = connect ();
$stmt = "Select COUNT (UserID) from". Db_name. ". USER WHERE is
Usergroupid! = 4 "; 4 user group ID for guest
info ($stmt);
$result = Query ($stmt, $conn);
$olnum [' user '] = result ($result, 0, "COUNT (UserID)");
$stmt = "Select COUNT (Tempid) from". Db_name. ". Tempuser ";
info ($stmt);
$result = Query ($stmt, $conn);
if ($row = Fetch_array ($result))
{
$olnum [' guest '] = $row [' COUNT (Tempid) '];
}
Disconnect ($conn);
return $olnum; From www.w3sky.com
}

where connect (), disconnect (), query (), Fetch_array () function in Dbmanager.inc.PHP
Dbmanager.inc.PHP
Define ("Db_name", "databasename");
Define ("Db_user", "USER");
Define ("Db_pass", "PASS");
Define ("Db_host", "localhost");
Function Connect ()
{
echo "Connecting to Host:". HOST. "
";
$conn = mysql_connect (Db_host,db_user,db_pass);
mysql_select_db (db_name);
/*
if ($conn)
{
echo "Connect to database sucessfully. Connection ID: ". $conn."
";
}
Else
{
echo "Connect to database failed.
";
}
*/
return $conn;
}
function Pconnect ()
{
return Mysql_pconnect (Db_host,db_user,db_pass);
}
function Disconnect ($conn)
{
$close = Mysql_close ($conn);
/*
if ($close)
echo "MySQL Database disconnected.
";
Else
echo "MySQL Database disconnecting failed. Please try again.
";
*/
}
function query ($stmt, $conn)
{
Return mysql_query ($stmt, $conn); From www.w3sky.com
}
function Fetch_array ($result)
{
return mysql_fetch_array ($result);
}
function Fetch_row ($result)
{
Return mysql_fetch_row ($result);
}
function Num_rows ($result)
{
Return mysql_num_rows ($result);
}
function result ($result, $row, $field)
{
Return mysql_result ($result, $row, $field);
}

Rule layer:
Rl_online. Php
function Getonline ()
{
if ($userid = = 2)
{
if (session_is_registered ("Tempuserid"))
{
Checkonline ($userid, $tempuserid);
}
}
Else
{
Checkonline ($userid);
}
return Getonlinenumber ();
}
UI layer:
Ui_online. Php
$online _num = Getonline ();
echo "Online number, registered user". $online _num[' user '. People, tourists ". $online _num[' guest ']." People ";

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