1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
|
<?php
/*
** Copyright (C) 1995-2007 by the ITools Authors.
** This file is part of ITools - the Internet Tools Library
**
** ITools is free software; you can redistribute it and/or modify
** it under the terms of the GNU General Public License as published by
** the Free Software Foundation; either version 3 of the License, or
** (at your option) any later version.
**
** ITools is distributed in the hope that it will be useful,
** but WITHOUT ANY WARRANTY; without even the implied warranty of
** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
** GNU General Public License for more details.
**
** You should have received a copy of the GNU General Public License
** along with this program. If not, see <http://www.gnu.org/licenses/>.
**
** Inspired by browser.pinc,v 1.1.1.1 1999/03/23 14:51:39 bobak Exp
*/
/**
* Browser capabilities class
* var $Type string: Browser type, "Netscape", "MSIE", "Konqueror", "Opera", "Safari", "Gecko" etc.
* var $Version float: Browser-Version x.y for all brands
* var $Platform string: "Win95", "Macintosh", "Linux" ... may be wrong
* var $Language string: Browser's language, "de", "en", ... or unset
* var $HTMLVersion float: Suported HTML version x.y
* var $JavaScript bool: Browser supports Javascript
* var $CSS bool: Browser supports Style sheets
* var $TextOnly bool: Browser supports only text, no graphics
*/
class it_browser
{
/* Generic attributes */
var $UserAgent; /* string: Unparsed HTTP_USER_AGENT */
var $Type = ''; /* string: Browser type, "Netscape", "MSIE", etc. */
var $Version; /* float: Browser-Version x.y for all brands */
var $Platform; /* string: "Win95", "Macintosh", "Linux" ... may be wrong */
var $Language; /* string: Browser's language, "de", "en", ... or unset */
var $HTMLVersion=0; /* float: Suported HTML version x.y */
var $JavaScript=0; /* bool: Browser supports Javascript */
var $CSS=1; /* int: Style sheet level (0..3) */
var $CSSFilter=0; /* bool: Is MSIE and supports CSS filter: property */
var $TextOnly=0; /* bool: Browser supports only text, no graphics */
var $VML=0; /* bool: Browser support VectorMarkupLanguage */
var $Canvas=0; /* bool: Supports Canvas */
var $XMLHTTP=0; /* bool: Browser supports XMLHTTP requests */
/* Browser specific stuff (DEPRECATED, use generic attributes above) */
var $MSIE; /* float: Microsoft Internet Explorer Version or 0 */
var $NS; /* float: Netscape Navigator Version or 0 */
/**
* Constructor: Initializes public fields with browser capabilities
*/
function __construct()
{
$this->UserAgent = $_SERVER['HTTP_USER_AGENT'];
/* $this->UserAgent = "Mozilla/4.0 [de] (compatible; MSIE 5.0; Windows 95; .NET CRL 2.0.154)"; */
/* Find "Mozilla/4.0" */
if (preg_match("#([^/]*)/([^ ]*)#", $this->UserAgent, $regs))
{
$this->Type = $regs[1];
$this->Version = (double)$regs[2];
}
/* Find optional "(compatible; MSIE 3.0; Win95)" */
if (preg_match("/\((.+)\)/U", $this->UserAgent, $regs))
{
$optattr = preg_split("/;\s+/", $regs[1]);
if ($optattr[0] == "compatible")
{
if (preg_match("#([^/]*)[/ ]([^/]*)#", $optattr[1], $regs))
{
$this->Type = $regs[1];
$this->Version = (double)$regs[2];
}
else
$this->Type = $optattr[1];
$this->Platform = !empty($optattr[2]) ? $optattr[2] : $optattr[count($optattr)-1];
}
else
$this->Platform = $optattr[0];
for ($i=1; $i < count($optattr); $i++)
{
if (preg_match("/^([a-z]{2})(\-[a-z]{2})?$/i", $optattr[$i], $regs))
$this->Language = $regs[1];
if (preg_match("/^rv:([0-9\.]+)/", $optattr[$i], $regs))
$this->Version = (float)$regs[1];
if (strstr($optattr[$i], "Linux") || $optattr[$i] == "X11")
$this->Platform = "Linux";
}
}
/* Find optional "[de]" */
if (!$this->Language && preg_match("/\[(.*)\]/", $this->UserAgent, $regs))
$this->Language = $regs[1];
/* Check for Safari/KHTML */
if (preg_match("/(Safari|AppleWebKit)\/([0-9\.]+)/", $this->UserAgent, $regs))
{
$this->Type = "Safari";
$this->Version = floatval($regs[2]);
}
/* Check for Gecko based browser */
if ($this->Type == "Mozilla" && preg_match("/[^a-z]Gecko[^a-z]/", $this->UserAgent))
$this->Type = "Gecko";
else if ($this->Type == "Mozilla" && $this->Version < 5)
$this->Type = "Netscape";
/* Read language from Accept-Language header */
if (!$this->Language && $_SERVER['HTTP_ACCEPT_LANGUAGE'])
{
$accept_langs = explode(',', $_SERVER['HTTP_ACCEPT_LANGUAGE']);
$this->Language = substr($accept_langs[0], 0, 2);
}
/* And now for the browser capabilities ... */
if ($this->Type == "MSIE")
{
$this->MSIE = $this->Version;
$this->HTMLVersion = 4.0;
$this->JavaScript = true;
$this->VML = ($this->Version >= 5.5);
$this->XMLHTTP = ($this->Version >= 5);
$this->CSS = $this->Version >= 4.0 ? 2 : 1;
$this->CSSFilter = ($this->Version >= 5.0);
}
else if ($this->Type == "Opera")
{
$this->Opera = $this->Version;
if ($this->Version >= 3.5)
{
$this->HTMLVersion = 4.0;
$this->CSS = 2;
}
else
{
$this->HTMLVersion = 3.2;
$this->CSS = 1;
}
$this->JavaScript = true;
$this->XMLHTTP = ($this->Version >= 8);
}
else if ($this->Type == "Konqueror")
{
$this->HTMLVersion = 4.0;
$this->CSS = 2;
$this->JavaScript = true;
$this->XMLHTTP = ($this->Version >= 3);
}
else if ($this->Type == "Netscape")
{
$this->NS = $this->Version;
$this->HTMLVersion = 4.0;
$this->JavaScript = true;
if ($this->Version >= 5.0)
$this->CSS = 2;
}
else if ($this->Type == "Gecko")
{
$this->HTMLVersion = 4.0;
$this->CSS = 2;
$this->JavaScript = true;
$this->XMLHTTP = true;
$this->Canvas = ($this->Version >= 1.8);
}
else if ($this->Type == "Safari")
{
$this->HTMLVersion = 4.0;
$this->JavaScript = true;
$this->CSS = 2;
$this->XMLHTTP = true;
$this->Canvas = ($this->Version >= 418);
}
else if ($this->Type == "Lynx")
$this->TextOnly = 1;
}
} /* End Class it_Browser */
?>
|