Example of php using mysql database to store session-PHP Tutorial-php.cn

Example of php using mysql database to store session

WBOY

Release： 2016-07-25 09:07:38

Original

1073 people have browsed it

CREATE TABLE `db_session` (
`sesskey` char(32) NOT NULL,
`expiry` int(11) unsigned NOT NULL,
`value` text NOT NULL,
PRIMARY KEY (`sesskey`)
) ENGINE=InnoDB DEFAULT CHARSET=latin1;

Copy code

Database shows: db_session Column names: sesskey, expiry, value Where: sesskey is the primary key. Value stores the value in the session.

3. Create session_mysql.php file. This file is used to construct a method to save the session. Just modify the parameters and use it directly. session_mysql.php php code:

$gb_DBname="db_myBBS";//Database name
$gb_DBuser="root";//Database user name
$gb_DBpass="23928484";//Database password
$gb_DBHOSTname ="localhost";//The name or IP address of the host
$SESS_DBH="";
$SESS_LIFE=get_cfg_var("session.gc_maxlifetime");//Get the maximum validity period of the session.
function sess_open($save_path,$session_name){
global $gb_DBHOSTname,$gb_DBname,$gb_DBuser,$gb_DBpass,$SESS_DBH;
if(!$SESS_DBH=mysql_pconnect($gb_DBHOSTname,$gb_DBuser,$gb_DBpass)){
echo "
MySql Error:".mysql_error()."
";
die();
}
if(!mysql_select_db($gb_DBname,$SESS_DBH)){
echo "
MySql Error: ".mysql_error()."
";
die();
}
return true;
}
function sess_close(){
return true;
}
function sess_read($key){
global $SESS_DBH,$SESS_LIFE;
$qry="select value from db_session where sesskey = '$key' and expiry > ".time();
$qid=mysql_query($qry,$SESS_DBH);
if(list( $value)=mysql_fetch_row($qid)){
return $value;
}
return false;
}
function sess_write($key,$val){
global $SESS_DBH,$SESS_LIFE;
$expiry=time() +$SESS_LIFE;
$value=$val;
$qry="insert into db_session values('$key',$expiry,'$value')";
$qid=mysql_query($qry,$SESS_DBH);
if(!$qid){
$qry="update db_session set expiry=$expiry, value='$value' where sesskey='$key' and expiry >".time();
$qid=mysql_query($ qry,$SESS_DBH);
}
return $qid;
}
function sess_destroy($key){
global $SESS_DBH;
$qry="delete from db_session where sesskey = '$key'";
$qid=mysql_query ($qry,$SESS_DBH);
return $qid;
}
function sess_gc($maxlifetime){
global $SESS_DBH;
$qry="delete from db_session where expiry < ".time();
$qid= mysql_query($qry,$SESS_DBH);
return mysql_affected_rows($SESS_DBH);
}
session_module_name();
session_set_save_handler("sess_open","sess_close","sess_read","sess_write","sess_destroy","sess_g c" );
?>