Customization of php session processing_PHP tutorial

user-define-session-inc.php file code:

Copy code The code is as follows:

function mysession_open($save_path, $session_name)
{
@mysql_connect("localhost", "root","1981427") //You need to connect to the database server before selecting the database
or die("database Server connection failed");
@mysql_select_db("test") //Select database mydb
or die("Database does not exist or is unavailable");
return true;
}

function mysession_close()
{
return true;
}

function mysession_read($key)
{
@mysql_connect("localhost", "root" ,"1981427") //You need to connect to the database server before selecting the database
or die("Database server connection failed");
@mysql_select_db("test") //Select the database mydb
or die( "The database does not exist or is unavailable");
$expiry_time = time(); //Get the Session expiration time
//Execute the SQL statement to get the value of the Session
$query = @mysql_query("select session_data from mysession "
."where session_key = '$key' and session_expiry > $expiry_time")
or die("SQL statement execution failed");
if($row = mysql_fetch_array($query) )
return $row['session_data'];
else
return false;
}

function mysession_write($key, $data)
{
@ mysql_connect("localhost", "root","1981427") //You need to connect to the database server before selecting the database
or die("Database server connection failed");
@mysql_select_db("test") // Select database mydb
or die("Database does not exist or is unavailable");
$expiry_time = time() + 1200; //Get the Session expiration time
//Query whether the key value of the Session already exists
$query = @mysql_query("select session_data from mysession "
."where session_key = '$key'")
or die("SQL statement execution failed");
//if not If exists, perform the insertion operation, otherwise perform the update operation
if(mysql_numrows($query) == 0)
{
//Execute the SQL statement to insert the value of the Session
$query = @mysql_query( "insert into mysession values('$key', '$data', $expiry_time)")
or die("SQL statement execution failed");
}
else
{
//Execute SQL statements to update the value of Session
$query = @mysql_query("update mysession set "
."session_data = '$data', session_expiry = $expiry_time "
."where session_key = '$ key'")
or die("SQL statement execution failed");
}
return $query;
}

function mysession_destroy($key)
{
@mysql_connect("localhost", "root","1981427") //You need to connect to the database server before selecting the database
or die("Database server connection failed");
@mysql_select_db("test" ) //Select database mydb
or die("Database does not exist or is unavailable");
//Execute SQL statement to delete Session
$query = @mysql_query("delete from mysession where session_key = '$ key'")
or die("SQL statement execution failed");
return $query;
}

function mysession_gc($expiry_time)
{
@mysql_connect ("localhost", "root","1981427") //You need to connect to the database server before selecting the database
or die("Database server connection failed");
@mysql_select_db("test") //Select Database mydb
or die("Database does not exist or is unavailable");
$expiry_time = time();
//Execute SQL statement to delete Session
$query = @mysql_query("delete from mysession where session_expiry < $expiry_time")
or die("SQL statement execution failed");
return $query;
}

//Set user-defined Session storage
session_set_save_handler('mysession_open',
'mysession_close',
'mysession_read',
'mysession_write',
'mysession_destroy',
'mysession_gc');
?>

Copy code The code is as follows:

include('user-define -session-inc.php'); //File containing session_set_save_handler definition

session_start();
$_SESSION['username'] = "zhuzhao";
$_SESSION['password' ] = "123456";
?>

Copy code The code is as follows:

include('user-define-session-inc.php'); //File containing the definition of session_set_save_handler

session_start();
echo "UserName:".$_SESSION ['username']."
";
echo "PassWord:".$_SESSION['password']."
";
?>

http://www.bkjia.com/PHPjc/319895.htmlwww.bkjia.comtruehttp: //www.bkjia.com/PHPjc/319895.htmlTechArticleuser-define-session-inc.php file code: Copy the code as follows: ?php function mysession_open($save_path , $session_name) { @mysql_connect("localhost", "root","1981427") //Select number...