--- /dev/null
+<?php
+/////////////////////////////////////////////////////////////////
+/// getID3() by James Heinrich <info@getid3.org> //
+// available at http://getid3.sourceforge.net //
+// or http://www.getid3.org //
+// also https://github.com/JamesHeinrich/getID3 //
+/////////////////////////////////////////////////////////////////
+// //
+// extension.cache.mysql.php - part of getID3() //
+// Please see readme.txt for more information //
+// ///
+/////////////////////////////////////////////////////////////////
+// //
+// This extension written by Allan Hansen <ahØartemis*dk> //
+// Table name mod by Carlo Capocasa <calroØcarlocapocasa*com> //
+// ///
+/////////////////////////////////////////////////////////////////
+
+
+/**
+* This is a caching extension for getID3(). It works the exact same
+* way as the getID3 class, but return cached information very fast
+*
+* Example: (see also demo.cache.mysql.php in /demo/)
+*
+* Normal getID3 usage (example):
+*
+* require_once 'getid3/getid3.php';
+* $getID3 = new getID3;
+* $getID3->encoding = 'UTF-8';
+* $info1 = $getID3->analyze('file1.flac');
+* $info2 = $getID3->analyze('file2.wv');
+*
+* getID3_cached usage:
+*
+* require_once 'getid3/getid3.php';
+* require_once 'getid3/getid3/extension.cache.mysql.php';
+* // 5th parameter (tablename) is optional, default is 'getid3_cache'
+* $getID3 = new getID3_cached_mysql('localhost', 'database', 'username', 'password', 'tablename');
+* $getID3->encoding = 'UTF-8';
+* $info1 = $getID3->analyze('file1.flac');
+* $info2 = $getID3->analyze('file2.wv');
+*
+*
+* Supported Cache Types (this extension)
+*
+* SQL Databases:
+*
+* cache_type cache_options
+* -------------------------------------------------------------------
+* mysql host, database, username, password
+*
+*
+* DBM-Style Databases: (use extension.cache.dbm)
+*
+* cache_type cache_options
+* -------------------------------------------------------------------
+* gdbm dbm_filename, lock_filename
+* ndbm dbm_filename, lock_filename
+* db2 dbm_filename, lock_filename
+* db3 dbm_filename, lock_filename
+* db4 dbm_filename, lock_filename (PHP5 required)
+*
+* PHP must have write access to both dbm_filename and lock_filename.
+*
+*
+* Recommended Cache Types
+*
+* Infrequent updates, many reads any DBM
+* Frequent updates mysql
+*/
+
+
+class getID3_cached_mysql extends getID3
+{
+
+ // private vars
+ private $cursor;
+ private $connection;
+
+
+ // public: constructor - see top of this file for cache type and cache_options
+ public function __construct($host, $database, $username, $password, $table='getid3_cache') {
+
+ // Check for mysql support
+ if (!function_exists('mysql_pconnect')) {
+ throw new Exception('PHP not compiled with mysql support.');
+ }
+
+ // Connect to database
+ $this->connection = mysql_pconnect($host, $username, $password);
+ if (!$this->connection) {
+ throw new Exception('mysql_pconnect() failed - check permissions and spelling.');
+ }
+
+ // Select database
+ if (!mysql_select_db($database, $this->connection)) {
+ throw new Exception('Cannot use database '.$database);
+ }
+
+ // Set table
+ $this->table = $table;
+
+ // Create cache table if not exists
+ $this->create_table();
+
+ // Check version number and clear cache if changed
+ $version = '';
+ $SQLquery = 'SELECT `value`';
+ $SQLquery .= ' FROM `'.mysql_real_escape_string($this->table).'`';
+ $SQLquery .= ' WHERE (`filename` = \''.mysql_real_escape_string(getID3::VERSION).'\')';
+ $SQLquery .= ' AND (`filesize` = -1)';
+ $SQLquery .= ' AND (`filetime` = -1)';
+ $SQLquery .= ' AND (`analyzetime` = -1)';
+ if ($this->cursor = mysql_query($SQLquery, $this->connection)) {
+ list($version) = mysql_fetch_array($this->cursor);
+ }
+ if ($version != getID3::VERSION) {
+ $this->clear_cache();
+ }
+
+ parent::__construct();
+ }
+
+
+
+ // public: clear cache
+ public function clear_cache() {
+
+ $this->cursor = mysql_query('DELETE FROM `'.mysql_real_escape_string($this->table).'`', $this->connection);
+ $this->cursor = mysql_query('INSERT INTO `'.mysql_real_escape_string($this->table).'` VALUES (\''.getID3::VERSION.'\', -1, -1, -1, \''.getID3::VERSION.'\')', $this->connection);
+ }
+
+
+
+ // public: analyze file
+ public function analyze($filename, $filesize=null, $original_filename='') {
+
+ if (file_exists($filename)) {
+
+ // Short-hands
+ $filetime = filemtime($filename);
+ $filesize = filesize($filename);
+
+ // Lookup file
+ $SQLquery = 'SELECT `value`';
+ $SQLquery .= ' FROM `'.mysql_real_escape_string($this->table).'`';
+ $SQLquery .= ' WHERE (`filename` = \''.mysql_real_escape_string($filename).'\')';
+ $SQLquery .= ' AND (`filesize` = \''.mysql_real_escape_string($filesize).'\')';
+ $SQLquery .= ' AND (`filetime` = \''.mysql_real_escape_string($filetime).'\')';
+ $this->cursor = mysql_query($SQLquery, $this->connection);
+ if (mysql_num_rows($this->cursor) > 0) {
+ // Hit
+ list($result) = mysql_fetch_array($this->cursor);
+ return unserialize(base64_decode($result));
+ }
+ }
+
+ // Miss
+ $analysis = parent::analyze($filename, $filesize, $original_filename);
+
+ // Save result
+ if (file_exists($filename)) {
+ $SQLquery = 'INSERT INTO `'.mysql_real_escape_string($this->table).'` (`filename`, `filesize`, `filetime`, `analyzetime`, `value`) VALUES (';
+ $SQLquery .= '\''.mysql_real_escape_string($filename).'\'';
+ $SQLquery .= ', \''.mysql_real_escape_string($filesize).'\'';
+ $SQLquery .= ', \''.mysql_real_escape_string($filetime).'\'';
+ $SQLquery .= ', \''.mysql_real_escape_string(time() ).'\'';
+ $SQLquery .= ', \''.mysql_real_escape_string(base64_encode(serialize($analysis))).'\')';
+ $this->cursor = mysql_query($SQLquery, $this->connection);
+ }
+ return $analysis;
+ }
+
+
+
+ // private: (re)create sql table
+ private function create_table($drop=false) {
+
+ $SQLquery = 'CREATE TABLE IF NOT EXISTS `'.mysql_real_escape_string($this->table).'` (';
+ $SQLquery .= '`filename` VARCHAR(990) NOT NULL DEFAULT \'\'';
+ $SQLquery .= ', `filesize` INT(11) NOT NULL DEFAULT \'0\'';
+ $SQLquery .= ', `filetime` INT(11) NOT NULL DEFAULT \'0\'';
+ $SQLquery .= ', `analyzetime` INT(11) NOT NULL DEFAULT \'0\'';
+ $SQLquery .= ', `value` LONGTEXT NOT NULL';
+ $SQLquery .= ', PRIMARY KEY (`filename`, `filesize`, `filetime`)) ENGINE=MyISAM CHARACTER SET=latin1 COLLATE=latin1_general_ci';
+ $this->cursor = mysql_query($SQLquery, $this->connection);
+ echo mysql_error($this->connection);
+ }
+}
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