PHP website training also talks about the online population statistics of PHP website

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. "Tempuseer Where
Tempid =". $ Tempid;
$ Result = Query ($ STMT, $ CONN);
// Info ($ STMT);
// = fetch_array($result))
{
$stmt = "UPDATE ".DB_NAME.".TEMPUSER SET
RequestTime='".getCurrentTime()."' WHERE TempID=".$tempid;
$result = query ($ stmt,$conn);
//info($stmt);
//The visitor is 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,$conn) ; stmt,$conn );
disconnect($conn);
}
//Get the number of people online, divided into users and visitors
function getOnlineNumber()
{
$olnum = array();
$stmt = " SELECT COUNT(UserID) FROM ".DB_NAME.".USER WHERE Is
UserGroupID != 4"; //4 is the guest's user group id
//info ($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($result)) '];
}
disconnect($conn);
return $olnum; //from www.w3sky.com
}

其中的connect(), disconnect(), query(),fetch_array()函数在dbmanager.inc.PHP中
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层：
rl_online.PHP
function getOnline()
{
if ($userid == 2)
{
if (session_is_registered("tempuserid"))
{
checkOnline($userid,$tempuserid);
}
}
else
{
checkOnline($userid);
}
return getOnlineNumber();
}
ui层：
ui_online.PHP
$online_num = getOnline();
echo "在线人数，注册用户".$online_num['user']."人，游客".$online_num['guest']."人";

以上就介绍了php网站培训 也谈php网站在线人数统计，包括了php网站培训方面的内容，希望对PHP教程有兴趣的朋友有所帮助。