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