GetId3\Extension\Cache\Mysql Class Reference

GetId3() by James Heinrich info@.nosp@m.geti.nosp@m.d3.or.nosp@m.g //. More...

Inheritance diagram for GetId3\Extension\Cache\Mysql:

Collaboration diagram for GetId3\Extension\Cache\Mysql:

Public Member Functions
	__construct ($host, $database, $username, $password, $table='getid3_cache')
	public: constructor - see top of this file for cache type and cache_options More...
	clear_cache ()
	public: clear cache More...
	analyze ($filename)
	public: analyze file More...
Public Member Functions inherited from GetId3\GetId3Core
	__construct ()
	public: constructor More...
	version ()
	fread_buffer_size ()
	setOption ($optArray)
	public: setOption More...
	openfile ($filename)
	analyze ($filename)
	public: analyze file More...
	GetFileFormatArray ()
	@staticvar array $format_info More...
	GetFileFormat (&$filedata, $filename='')
	CharConvert (&$array, $encoding)
	HandleAllTags ()
	@staticvar array $tags More...
	getHashdata ($algorithm)
	ChannelsBitratePlaytimeCalculations ()
	CalculateCompressionRatioVideo ()
	CalculateCompressionRatioAudio ()
	CalculateReplayGain ()
	ProcessAudioStreams ()
	GetId3_tempnam ()

Private Member Functions
	create_table ($drop=false)
	private: (re)create sql table More...

Private Attributes
	$cursor
	$connection

Additional Inherited Members
Static Public Member Functions inherited from GetId3\GetId3Core
static	getHelperAppsDir ()
static	getTempDir ()
static	environmentIsWindows ()
static	getIncludePath ()
Data Fields inherited from GetId3\GetId3Core
	$encoding = 'UTF-8'
	$encoding_id3v1 = 'ISO-8859-1'
	$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_save_attachments = true
	$option_md5_data = false
	$option_md5_data_source = false
	$option_sha1_data = false
	$option_max_2gb_check = null
	$option_fread_buffer_size = 32768
	$filename
	$fp
	$info
	$tempdir
const	VERSION = '1.9.4-20120530'
const	FREAD_BUFFER_SIZE = 32768
const	ATTACHMENTS_NONE = false
const	ATTACHMENTS_INLINE = true
Protected Member Functions inherited from GetId3\GetId3Core
	setHelperAppsDir ()
Protected Attributes inherited from GetId3\GetId3Core
	$startup_error = ''
	$startup_warning = ''
	$memory_limit = 0
Static Protected Attributes inherited from GetId3\GetId3Core
static	$TempDir
static	$IncludePath
static	$EnvironmentIsWindows
static	$HelperAppsDir

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'; // 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

Author

James Heinrich info@.nosp@m.geti.nosp@m.d3.or.nosp@m.g

Allan Hansen <ahØartemis*dk>

Carlo Capocasa <calroØcarlocapocasa*com> http://www.getid3.org

Definition at line 85 of file Mysql.php.

Constructor & Destructor Documentation

__construct()

GetId3\Extension\Cache\Mysql::__construct	(		$host,
			$database,
			$username,
			$password,
			$table = 'getid3_cache'
	)

public: constructor - see top of this file for cache type and cache_options

Parameters

type	$host
type	$database
type	$username
type	$password
type	$table

Exceptions

Exception

Definition at line 109 of file Mysql.php.

    {
        // Check for mysql support
        if (!function_exists('mysql_pconnect')) {
            throw new DefaultException('PHP not compiled with mysql support.');
        }
 
        // Connect to database
        $this->connection = mysql_pconnect($host, $username, $password);
        if (!$this->connection) {
            throw new DefaultException('mysql_pconnect() failed - check permissions and spelling.');
        }
 
        // Select database
        if (!mysql_select_db($database, $this->connection)) {
            throw new DefaultException('Cannot use database '.$database);
        }
 
        // Set table
        $this->table = $table;
 
        // Create cache table if not exists
        $this->create_table();
 
        // Check version number and clear cache if changed
        $version = '';
        if ($this->cursor = mysql_query("SELECT `value` FROM `".mysql_real_escape_string($this->table)."` WHERE (`filename` = '".mysql_real_escape_string(GetId3Core::VERSION)."') AND (`filesize` = '-1') AND (`filetime` = '-1') AND (`analyzetime` = '-1')", $this->connection)) {
            list($version) = mysql_fetch_array($this->cursor);
        }
        if ($version != GetId3Core::VERSION) {
            $this->clear_cache();
        }
 
        parent::__construct();
    }

References $version, GetId3\Extension\Cache\Mysql\clear_cache(), GetId3\Extension\Cache\Mysql\create_table(), and GetId3\GetId3Core\VERSION.

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Member Function Documentation

analyze()

GetId3\Extension\Cache\Mysql::analyze

(

$filename

)

public: analyze file

Parameters

type

$filename

Returns

type

Reimplemented from GetId3\GetId3Core.

Definition at line 160 of file Mysql.php.

    {
        if (file_exists($filename)) {
 
            // Short-hands
            $filetime = filemtime($filename);
            $filesize = filesize($filename);
 
            // Lookup file
            $this->cursor = mysql_query("SELECT `value` FROM `".mysql_real_escape_string($this->table)."` WHERE (`filename` = '".mysql_real_escape_string($filename)."') AND (`filesize` = '".mysql_real_escape_string($filesize)."') AND (`filetime` = '".mysql_real_escape_string($filetime)."')", $this->connection);
            if (mysql_num_rows($this->cursor) > 0) {
                // Hit
                list($result) = mysql_fetch_array($this->cursor);
 
                return unserialize(base64_decode($result));
            }
        }
 
        // Miss
        $analysis = parent::analyze($filename);
 
        // Save result
        if (file_exists($filename)) {
            $this->cursor = mysql_query("INSERT INTO `".mysql_real_escape_string($this->table)."` (`filename`, `filesize`, `filetime`, `analyzetime`, `value`) VALUES ('".mysql_real_escape_string($filename)."', '".mysql_real_escape_string($filesize)."', '".mysql_real_escape_string($filetime)."', '".mysql_real_escape_string(time())."', '".mysql_real_escape_string(base64_encode(serialize($analysis)))."')", $this->connection);
        }
 
        return $analysis;
    }

References GetId3\GetId3Core\$filename, and $result.

clear_cache()

GetId3\Extension\Cache\Mysql::clear_cache

(

)

public: clear cache

Definition at line 148 of file Mysql.php.

    {
        $this->cursor = mysql_query("DELETE FROM `".mysql_real_escape_string($this->table)."`", $this->connection);
        $this->cursor = mysql_query("INSERT INTO `".mysql_real_escape_string($this->table)."` VALUES ('".GetId3Core::VERSION."', -1, -1, -1, '".GetId3Core::VERSION."')", $this->connection);
    }

References GetId3\GetId3Core\VERSION.

Referenced by GetId3\Extension\Cache\Mysql\__construct().

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create_table()

GetId3\Extension\Cache\Mysql::create_table (   $drop = false )

private

private: (re)create sql table

Parameters

type

$drop

Definition at line 194 of file Mysql.php.

    {
        $this->cursor = mysql_query("CREATE TABLE IF NOT EXISTS `".mysql_real_escape_string($this->table)."` (
            `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`)) ENGINE=MyISAM", $this->connection);
        echo mysql_error($this->connection);
    }

Referenced by GetId3\Extension\Cache\Mysql\__construct().

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Field Documentation

$connection

GetId3\Extension\Cache\Mysql::$connection

private

Definition at line 97 of file Mysql.php.

$cursor

GetId3\Extension\Cache\Mysql::$cursor

private

Definition at line 91 of file Mysql.php.

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

• libs/composer/vendor/phansys/getid3/GetId3/Extension/Cache/Mysql.php