getID3_cached_mysql Class Reference

getID3() by James Heinrich info@.nosp@m.geti.nosp@m.d3.or.nosp@m.g // More...

Inheritance diagram for getID3_cached_mysql:

Collaboration diagram for getID3_cached_mysql:

Public Member Functions
	getID3_cached_mysql ($host, $database, $username, $password)
	clear_cache ()
	analyze ($filename)
	create_table ($drop=false)
Public Member Functions inherited from getID3
	getID3 ()
	setOption ($optArray)
	analyze ($filename)
	error ($message)
	warning ($message)
	CleanUp ()
	GetFileFormatArray ()
	GetFileFormat (&$filedata, $filename='')
	CharConvert (&$array, $encoding)
	HandleAllTags ()
	getHashdata ($algorithm)
	ChannelsBitratePlaytimeCalculations ()
	CalculateCompressionRatioVideo ()
	CalculateCompressionRatioAudio ()
	CalculateReplayGain ()
	ProcessAudioStreams ()
	getid3_tempnam ()

Data Fields
	$cursor
	$connection
Data Fields inherited from getID3
	$encoding = 'ISO-8859-1'
	$encoding_id3v1 = 'ISO-8859-1'
	$tempdir = '*'
	$option_tag_id3v1 = true
	$option_tag_id3v2 = true
	$option_tag_lyrics3 = true
	$option_tag_apetag = true
	$option_tags_process = true
	$option_tags_html = true
	$option_extra_info = true
	$option_md5_data = false
	$option_md5_data_source = false
	$option_sha1_data = false
	$option_max_2gb_check = true
	$filename

Detailed Description

getID3() by James Heinrich info@.nosp@m.geti.nosp@m.d3.or.nosp@m.g //

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'; $getID3 = new getID3_cached_mysql('localhost', 'database', 'username', 'password'); $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

Definition at line 72 of file extension.cache.mysql.php.

Member Function Documentation

analyze()

getID3_cached_mysql::analyze

(

$filename

)

Reimplemented from getID3.

Definition at line 124 of file extension.cache.mysql.php.

                                    {
 
                if (file_exists($filename)) {
 
                        // Short-hands
                        $filetime = filemtime($filename);
                        $filesize = filesize($filename);
                        $filenam2 = mysql_escape_string($filename);
 
                        // Loopup file
                        $this->cursor = mysql_query("SELECT `value` FROM `getid3_cache` WHERE (`filename`='".$filenam2."') AND (`filesize`='".$filesize."') AND (`filetime`='".$filetime."')", $this->connection);
                        list($result) = @mysql_fetch_array($this->cursor);
 
                        // Hit
                        if ($result) {
                                return unserialize($result);
                        }
                }
 
                // Miss
                $result = parent::analyze($filename);
 
                // Save result
                if (file_exists($filename)) {
                        $res2 = mysql_escape_string(serialize($result));
                        $this->cursor = mysql_query("INSERT INTO `getid3_cache` (`filename`, `filesize`, `filetime`, `analyzetime`, `value`) VALUES ('".$filenam2."', '".$filesize."', '".$filetime."', '".time()."', '".$res2."')", $this->connection);
                }
                return $result;
        }

References getID3\$filename, and $result.

clear_cache()

getID3_cached_mysql::clear_cache

(

)

Definition at line 115 of file extension.cache.mysql.php.

                               {
 
                $this->cursor = mysql_query("DELETE FROM `getid3_cache`", $this->connection);
                $this->cursor = mysql_query("INSERT INTO `getid3_cache` VALUES ('".GETID3_VERSION."', -1, -1, -1, '".GETID3_VERSION."')", $this->connection);
        }

References GETID3_VERSION.

Referenced by getID3_cached_mysql().

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create_table()

getID3_cached_mysql::create_table

(

$drop = false

)

Definition at line 157 of file extension.cache.mysql.php.

                                             {
 
                $this->cursor = mysql_query("CREATE TABLE IF NOT EXISTS `getid3_cache` (
                        `filename` VARCHAR(255) NOT NULL DEFAULT '',
                        `filesize` INT(11) NOT NULL DEFAULT '0',
                        `filetime` INT(11) NOT NULL DEFAULT '0',
                        `analyzetime` INT(11) NOT NULL DEFAULT '0',
                        `value` TEXT NOT NULL,
                        PRIMARY KEY (`filename`,`filesize`,`filetime`)) TYPE=MyISAM", $this->connection);
                echo mysql_error($this->connection);
        }

Referenced by getID3_cached_mysql().

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getID3_cached_mysql()

getID3_cached_mysql::getID3_cached_mysql	(		$host,
			$database,
			$username,
			$password
	)

Definition at line 81 of file extension.cache.mysql.php.

                                                                             {
 
                // Check for mysql support
                if (!function_exists('mysql_pconnect')) {
                        die('PHP not compiled with mysql support.');
                }
 
                // Connect to database
                $this->connection = mysql_pconnect($host, $username, $password);
                if (!$this->connection) {
                        die('mysql_pconnect() failed - check permissions and spelling.');
                }
 
                // Select database
                if (!mysql_select_db($database, $this->connection)) {
                        die('Cannot use database '.$database);
                }
 
                // Create cache table if not exists
                $this->create_table();
 
                // Check version number and clear cache if changed
                $this->cursor = mysql_query("SELECT `value` FROM `getid3_cache` WHERE (`filename` = '".GETID3_VERSION."') AND (`filesize` = '-1') AND (`filetime` = '-1') AND (`analyzetime` = '-1')", $this->connection);
                list($version) = @mysql_fetch_array($this->cursor);
                if ($version != GETID3_VERSION) {
                        $this->clear_cache();
                }
 
                parent::getID3();
        }

References clear_cache(), create_table(), and GETID3_VERSION.

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Field Documentation

$connection

getID3_cached_mysql::$connection

Definition at line 77 of file extension.cache.mysql.php.

$cursor

getID3_cached_mysql::$cursor

Definition at line 76 of file extension.cache.mysql.php.

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The documentation for this class was generated from the following file:

• Services/MediaObjects/getid3/getid3/extension.cache.mysql.php