name : extension.cache.mysql.php <?php ///////////////////////////////////////////////////////////////// /// getID3() by James Heinrich <info@getid3.org> // // available at https://github.com/JamesHeinrich/getID3 // // or https://www.getid3.org // // or http://getid3.sourceforge.net // // // // 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 { /** * @var resource */ private $cursor; /** * @var resource */ private $connection; /** * @var string */ private $table; /** * constructor - see top of this file for cache type and cache_options * * @param string $host * @param string $database * @param string $username * @param string $password * @param string $table * * @throws Exception * @throws getid3_exception */ public function __construct($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(); } /** * 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); } /** * analyze file * * @param string $filename * @param int $filesize * @param string $original_filename * @param resource $fp * * @return mixed */ public function analyze($filename, $filesize=null, $original_filename='', $fp=null) { $filetime = 0; if (file_exists($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, $fp); // Save result if (file_exists($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; } /** * (re)create sql table * * @param bool $drop */ private function create_table($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`))'; $this->cursor = mysql_query($SQLquery, $this->connection); echo mysql_error($this->connection); } }