Posted by Greg Donald on 10/04/19 11:08

On Wed, 16 Feb 2005 09:36:26 -0800 (PST), Richard Lynch <ceo@l-i-e.com> wrote:
> It's literally an hour's work to alter the code to use MySQL to store the
> sessions instead of the hard drive.

Not really, maybe 5 minutes.. here's the code:

Make the table in your database:

CREATE TABLE `sessions` (
`id` varchar(32) NOT NULL default '',
`data` text NOT NULL,
`expire` int(11) unsigned NOT NULL default '0',
PRIMARY KEY (`id`)
);

Make a sessions.php file:

<?php

// MySQL database connection parameters:
$dbhost = 'localhost';
$dbuser = 'dbuser';
$dbpasswd = 'dbpassword';
$dbname = 'dbname';

// Sessions table name:
$tb_sessions = 'sessions';

// Session lifetime in seconds:
$online_expire = 900;

// Use transparent sessions:
ini_set( 'session.use_trans_sid', 1);


// Below here should not require any changes

$sdbh = '';

function sess_open( $save_path, $session_name )
{
global $sdbh;

if( ! $sdbh = mysql_pconnect( $dbhost, $dbuser, $dbpasswd ) )
{
echo mysql_error();

exit();
}

return true;
}

function sess_close()
{
return true;
}

function sess_read( $key )
{
global $sdbh, $dbname, $tb_sessions;

$sql = "
SELECT data
FROM $tb_sessions
WHERE id = '$key'
AND expire > UNIX_TIMESTAMP()
";

$query = mysql_query( $sql ) or die( mysql_error() );

if( mysql_num_rows( $query ) )
{
return mysql_result( $query, 0, 'data' );
}

return false;
}

function sess_write( $key, $val )
{
global $tb_sessions, $online_expire;

$value = addslashes( $val );

$sql = "
REPLACE INTO $tb_sessions (
id,
data,
expire
) VALUES (
'$key',
'$value',
UNIX_TIMESTAMP() + $online_expire
)
";

return mysql_query( $sql ) or die( mysql_error() );
}

function sess_destroy( $key )
{
global $tb_sessions;

$sql = "
DELETE FROM $tb_sessions
WHERE id = '$key'
";

return mysql_query( $sql ) or die( mysql_error() );
}

function sess_gc()
{
global $tb_sessions;

$sql = "
DELETE FROM $tb_sessions
WHERE expire < UNIX_TIMESTAMP()
";

$query = mysql_query( $sql ) or die( mysql_error() );

return mysql_affected_rows();
}

session_set_save_handler(
'sess_open',
'sess_close',
'sess_read',
'sess_write',
'sess_destroy',
'sess_gc'
);

session_start();

$sn = session_name();
$sid = session_id();

?>

Then you just do include( 'sessions.php' );

http://wiki.destiney.com/DBSessions/Install


--
Greg Donald
Zend Certified Engineer
http://destiney.com/

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