├── README.md
├── example.php
└── MySqlSessionHandler.php


/README.md:
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1 | # PHP MySQL Session Handler
2 | 
3 | This is old and abandoned. Do not use.
4 | 


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/example.php:
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 1 | <?php
 2 | require_once('MySqlSessionHandler.php');
 3 | 
 4 | $session = new MySqlSessionHandler();
 5 | 
 6 | // add db data
 7 | $session->setDbDetails('localhost', 'username', 'password', 'database');
 8 | 
 9 | // OR alternatively send a MySQLi ressource
10 | // $session->setDbConnection($mysqli);
11 | 
12 | $session->setDbTable('session_handler_table');
13 | session_set_save_handler(array($session, 'open'),
14 |                          array($session, 'close'),
15 |                          array($session, 'read'),
16 |                          array($session, 'write'),
17 |                          array($session, 'destroy'),
18 |                          array($session, 'gc'));
19 | 
20 | // The following prevents unexpected effects when using objects as save handlers.
21 | register_shutdown_function('session_write_close');
22 | 
23 | session_start();
24 | 


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/MySqlSessionHandler.php:
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  1 | <?php
  2 | 
  3 | /**
  4 | * A PHP session handler to keep session data within a MySQL database
  5 | *
  6 | * @author 	Manuel Reinhard <manu@sprain.ch>
  7 | * @link		https://github.com/sprain/PHP-MySQL-Session-Handler
  8 | */
  9 | 
 10 | class MySqlSessionHandler{
 11 | 
 12 |     /**
 13 |      * a database MySQLi connection resource
 14 |      * @var resource
 15 |      */
 16 |     protected $dbConnection;
 17 |     
 18 |     /**
 19 |      * the name of the DB table which handles the sessions
 20 |      * @var string
 21 |      */
 22 |     protected $dbTable;
 23 | 
 24 |     /**
 25 |      * Set db data if no connection is being injected
 26 |      * @param 	string	$dbHost
 27 |      * @param	string	$dbUser
 28 |      * @param	string	$dbPassword
 29 |      * @param	string	$dbDatabase
 30 |      */
 31 |     public function setDbDetails($dbHost, $dbUser, $dbPassword, $dbDatabase)
 32 |     {
 33 |         $this->dbConnection = new mysqli($dbHost, $dbUser, $dbPassword, $dbDatabase);
 34 | 
 35 |         if (mysqli_connect_error()) {
 36 |             throw new Exception('Connect Error (' . mysqli_connect_errno() . ') ' . mysqli_connect_error());
 37 |         }
 38 |     }
 39 | 
 40 |     /**
 41 |      * Inject DB connection from outside
 42 |      * @param 	object	$dbConnection	expects MySQLi object
 43 |      */
 44 |     public function setDbConnection($dbConnection)
 45 |     {
 46 |         $this->dbConnection = $dbConnection;
 47 |     }
 48 | 
 49 |     /**
 50 |      * Inject DB connection from outside
 51 |      * @param 	object	$dbConnection	expects MySQLi object
 52 |      */
 53 |     public function setDbTable($dbTable)
 54 |     {
 55 |         $this->dbTable = $dbTable;
 56 |     }
 57 | 
 58 |     /**
 59 |      * Open the session
 60 |      * @return bool
 61 |      */
 62 |     public function open()
 63 |     {
 64 |         //delete old session handlers
 65 |         $limit = time() - (3600 * 24);
 66 |         $sql = sprintf("DELETE FROM %s WHERE timestamp < %s", $this->dbTable, $limit);
 67 |         return $this->dbConnection->query($sql);
 68 |     }
 69 | 
 70 |     /**
 71 |      * Close the session
 72 |      * @return bool
 73 |      */
 74 |     public function close()
 75 |     {
 76 |         return $this->dbConnection->close();
 77 |     }
 78 | 
 79 |     /**
 80 |      * Read the session
 81 |      * @param int session id
 82 |      * @return string string of the sessoin
 83 |      */
 84 |     public function read($id)
 85 |     {
 86 |         $sql = sprintf("SELECT data FROM %s WHERE id = '%s'", $this->dbTable, $this->dbConnection->escape_string($id));
 87 |         if ($result = $this->dbConnection->query($sql)) {
 88 |             if ($result->num_rows && $result->num_rows > 0) {
 89 |                 $record = $result->fetch_assoc();
 90 |                 return $record['data'];
 91 |             } else {
 92 |                 return false;
 93 |             }
 94 |         } else {
 95 |             return false;
 96 |         }
 97 | 
 98 |         return true;
 99 |     }
100 | 
101 |     /**
102 |      * Write the session
103 |      * @param int session id
104 |      * @param string data of the session
105 |      */
106 |     public function write($id, $data)
107 |     {
108 | 
109 |         $sql = sprintf("REPLACE INTO %s VALUES('%s', '%s', '%s')",
110 |                        $this->dbTable,
111 |                        $this->dbConnection->escape_string($id),
112 |                        $this->dbConnection->escape_string($data),
113 |                        time());
114 |         return $this->dbConnection->query($sql);
115 |     }
116 | 
117 |     /**
118 |      * Destoroy the session
119 |      * @param int session id
120 |      * @return bool
121 |      */
122 |     public function destroy($id)
123 |     {
124 |         $sql = sprintf("DELETE FROM %s WHERE `id` = '%s'", $this->dbTable, $this->dbConnection->escape_string($id));
125 |         return $this->dbConnection->query($sql);
126 |     }
127 | 
128 |     /**
129 |      * Garbage Collector
130 |      * @param int life time (sec.)
131 |      * @return bool
132 |      * @see session.gc_divisor      100
133 |      * @see session.gc_maxlifetime 1440
134 |      * @see session.gc_probability    1
135 |      * @usage execution rate 1/100
136 |      *        (session.gc_probability/session.gc_divisor)
137 |      */
138 |     public function gc($max)
139 |     {
140 |         $sql = sprintf("DELETE FROM %s WHERE `timestamp` < '%s'", $this->dbTable, time() - intval($max));
141 |         return $this->dbConnection->query($sql);
142 |     }
143 | }
144 | 


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