source: branches/MootoolsFileManager-Update/plugins/MootoolsFileManager/mootools-filemanager/Assets/Connector/Assets/getid3/extension.cache.mysql.php @ 1300

Last change on this file since 1300 was 1300, checked in by gogo, 8 years ago

Update the MootoolsFileManager? to the latest cpojer with some modifications.
Add a demo for the MFM examples/mootools-file-manager.php
Change the default config for ImageManager? and ExtendedFileManager? for added security.

File size: 5.7 KB
Line 
1<?php
2/////////////////////////////////////////////////////////////////
3/// getID3() by James Heinrich <info@getid3.org>               //
4//  available at http://getid3.sourceforge.net                 //
5//            or http://www.getid3.org                         //
6/////////////////////////////////////////////////////////////////
7//                                                             //
8// extension.cache.mysql.php - part of getID3()                //
9// Please see readme.txt for more information                  //
10//                                                            ///
11/////////////////////////////////////////////////////////////////
12//                                                             //
13// This extension written by Allan Hansen <ahØartemis*dk>      //
14//                                                            ///
15/////////////////////////////////////////////////////////////////
16
17
18/**
19* This is a caching extension for getID3(). It works the exact same
20* way as the getID3 class, but return cached information very fast
21*
22* Example:  (see also demo.cache.mysql.php in /demo/)
23*
24*    Normal getID3 usage (example):
25*
26*       require_once 'getid3/getid3.php';
27*       $getID3 = new getID3;
28*       $getID3->encoding = 'UTF-8';
29*       $info1 = $getID3->analyze('file1.flac');
30*       $info2 = $getID3->analyze('file2.wv');
31*
32*    getID3_cached usage:
33*
34*       require_once 'getid3/getid3.php';
35*       require_once 'getid3/getid3/extension.cache.mysql.php';
36*       $getID3 = new getID3_cached_mysql('localhost', 'database',
37*                                         'username', 'password');
38*       $getID3->encoding = 'UTF-8';
39*       $info1 = $getID3->analyze('file1.flac');
40*       $info2 = $getID3->analyze('file2.wv');
41*
42*
43* Supported Cache Types    (this extension)
44*
45*   SQL Databases:
46*
47*   cache_type          cache_options
48*   -------------------------------------------------------------------
49*   mysql               host, database, username, password
50*
51*
52*   DBM-Style Databases:    (use extension.cache.dbm)
53*
54*   cache_type          cache_options
55*   -------------------------------------------------------------------
56*   gdbm                dbm_filename, lock_filename
57*   ndbm                dbm_filename, lock_filename
58*   db2                 dbm_filename, lock_filename
59*   db3                 dbm_filename, lock_filename
60*   db4                 dbm_filename, lock_filename  (PHP5 required)
61*
62*   PHP must have write access to both dbm_filename and lock_filename.
63*
64*
65* Recommended Cache Types
66*
67*   Infrequent updates, many reads      any DBM
68*   Frequent updates                    mysql
69*/
70
71
72class getID3_cached_mysql extends getID3
73{
74
75        // private vars
76        var $cursor;
77        var $connection;
78
79
80        // public: constructor - see top of this file for cache type and cache_options
81        function getID3_cached_mysql($host, $database, $username, $password) {
82
83                // Check for mysql support
84                if (!function_exists('mysql_pconnect')) {
85                        throw new Exception('PHP not compiled with mysql support.');
86                }
87
88                // Connect to database
89                $this->connection = mysql_pconnect($host, $username, $password);
90                if (!$this->connection) {
91                        throw new Exception('mysql_pconnect() failed - check permissions and spelling.');
92                }
93
94                // Select database
95                if (!mysql_select_db($database, $this->connection)) {
96                        throw new Exception('Cannot use database '.$database);
97                }
98
99                // Create cache table if not exists
100                $this->create_table();
101
102                // Check version number and clear cache if changed
103                $version = '';
104                if ($this->cursor = mysql_query("SELECT `value` FROM `getid3_cache` WHERE (`filename` = '".mysql_real_escape_string(GETID3_VERSION)."') AND (`filesize` = '-1') AND (`filetime` = '-1') AND (`analyzetime` = '-1')", $this->connection)) {
105                        list($version) = mysql_fetch_array($this->cursor);
106                }
107                if ($version != GETID3_VERSION) {
108                        $this->clear_cache();
109                }
110
111                parent::getID3();
112        }
113
114
115
116        // public: clear cache
117        function clear_cache() {
118
119                $this->cursor = mysql_query("DELETE FROM `getid3_cache`", $this->connection);
120                $this->cursor = mysql_query("INSERT INTO `getid3_cache` VALUES ('".GETID3_VERSION."', -1, -1, -1, '".GETID3_VERSION."')", $this->connection);
121        }
122
123
124
125        // public: analyze file
126        function analyze($filename) {
127
128                if (file_exists($filename)) {
129
130                        // Short-hands
131                        $filetime = filemtime($filename);
132                        $filesize = filesize($filename);
133
134                        // Loopup file
135                        $result = '';
136                        if ($this->cursor = mysql_query("SELECT `value` FROM `getid3_cache` WHERE (`filename` = '".mysql_real_escape_string($filename)."') AND (`filesize` = '".mysql_real_escape_string($filesize)."') AND (`filetime` = '".mysql_real_escape_string($filetime)."')", $this->connection)) {
137                                // Hit
138                                list($result) = mysql_fetch_array($this->cursor);
139                                return unserialize(base64_decode($result));
140                        }
141                }
142
143                // Miss
144                $analysis = parent::analyze($filename);
145
146                // Save result
147                if (file_exists($filename)) {
148                        $this->cursor = mysql_query("INSERT INTO `getid3_cache` (`filename`, `filesize`, `filetime`, `analyzetime`, `value`) VALUES ('".mysql_real_escape_string($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);
149                }
150                return $result;
151        }
152
153
154
155        // private: (re)create sql table
156        function create_table($drop=false) {
157
158                $this->cursor = mysql_query("CREATE TABLE IF NOT EXISTS `getid3_cache` (
159                        `filename` VARCHAR(255) NOT NULL DEFAULT '',
160                        `filesize` INT(11) NOT NULL DEFAULT '0',
161                        `filetime` INT(11) NOT NULL DEFAULT '0',
162                        `analyzetime` INT(11) NOT NULL DEFAULT '0',
163                        `value` TEXT NOT NULL,
164                        PRIMARY KEY (`filename`,`filesize`,`filetime`)) TYPE=MyISAM", $this->connection);
165                echo mysql_error($this->connection);
166        }
167}
168
169
170?>
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