getID3() by James Heinrich <info@getid3.org> // 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) | |
Data Fields | |
| $cursor | |
| $connection | |
Detailed Description
getID3() by James Heinrich <info@getid3.org> //
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
| getID3_cached_mysql::analyze | ( | $ | filename | ) |
Reimplemented from getID3.
Definition at line 124 of file extension.cache.mysql.php.
References getID3::$filename.
{
if (file_exists($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;
}
| getID3_cached_mysql::clear_cache | ( | ) |
Definition at line 115 of file extension.cache.mysql.php.
Referenced by getID3_cached_mysql().
{
$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);
}
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| getID3_cached_mysql::create_table | ( | $ | drop = false |
) |
Definition at line 157 of file extension.cache.mysql.php.
Referenced by getID3_cached_mysql().
{
$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);
}
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| getID3_cached_mysql::getID3_cached_mysql | ( | $ | host, | |
| $ | database, | |||
| $ | username, | |||
| $ | password | |||
| ) |
Definition at line 81 of file extension.cache.mysql.php.
References $host, clear_cache(), create_table(), and getID3::getID3().
{
// 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) {
$this->clear_cache();
}
parent::getID3();
}
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Field Documentation
| getID3_cached_mysql::$connection |
Definition at line 77 of file extension.cache.mysql.php.
| getID3_cached_mysql::$cursor |
Definition at line 76 of file extension.cache.mysql.php.
The documentation for this class was generated from the following file:
- Services/MediaObjects/getid3/getid3/extension.cache.mysql.php
