|
1
|
|
|
<?php |
|
2
|
|
|
/* |
|
3
|
|
|
Copyright 2006 Aaron D. Campbell (email : [email protected]) |
|
4
|
|
|
|
|
5
|
|
|
This program is free software; you can redistribute it and/or modify |
|
6
|
|
|
it under the terms of the GNU General Public License as published by |
|
7
|
|
|
the Free Software Foundation; either version 2 of the License, or |
|
8
|
|
|
(at your option) any later version. |
|
9
|
|
|
|
|
10
|
|
|
This program is distributed in the hope that it will be useful, |
|
11
|
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of |
|
12
|
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
|
13
|
|
|
GNU General Public License for more details. |
|
14
|
|
|
|
|
15
|
|
|
You should have received a copy of the GNU General Public License |
|
16
|
|
|
along with this program; if not, write to the Free Software |
|
17
|
|
|
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
|
18
|
|
|
*/ |
|
19
|
|
|
|
|
20
|
|
|
/** |
|
21
|
|
|
* Jetpack_Google_Analytics is the class that handles ALL of the plugin functionality. |
|
22
|
|
|
* It helps us avoid name collisions |
|
23
|
|
|
* http://codex.wordpress.org/Writing_a_Plugin#Avoiding_Function_Name_Collisions |
|
24
|
|
|
*/ |
|
25
|
|
|
class Jetpack_Google_Analytics { |
|
26
|
|
|
|
|
27
|
|
|
/** |
|
28
|
|
|
* @var Jetpack_Google_Analytics - Static property to hold our singleton instance |
|
29
|
|
|
*/ |
|
30
|
|
|
static $instance = false; |
|
|
|
|
|
|
31
|
|
|
|
|
32
|
|
|
/** |
|
33
|
|
|
* This is our constructor, which is private to force the use of get_instance() |
|
34
|
|
|
* |
|
35
|
|
|
* @return void |
|
|
|
|
|
|
36
|
|
|
*/ |
|
37
|
|
|
private function __construct() { |
|
38
|
|
|
add_action( 'wp_footer', array( $this, 'insert_code' ) ); |
|
39
|
|
|
} |
|
40
|
|
|
|
|
41
|
|
|
/** |
|
42
|
|
|
* Function to instantiate our class and make it a singleton |
|
43
|
|
|
*/ |
|
44
|
|
|
public static function get_instance() { |
|
45
|
|
|
if ( ! self::$instance ) { |
|
46
|
|
|
self::$instance = new self; |
|
47
|
|
|
} |
|
48
|
|
|
|
|
49
|
|
|
return self::$instance; |
|
50
|
|
|
} |
|
51
|
|
|
|
|
52
|
|
|
/** |
|
53
|
|
|
* Used to generate a tracking URL |
|
54
|
|
|
* |
|
55
|
|
|
* @param array $track - Must have ['data'] and ['code']. |
|
56
|
|
|
* @return string - Tracking URL |
|
57
|
|
|
*/ |
|
58
|
|
|
private function _get_url( $track ) { |
|
59
|
|
|
$site_url = ( is_ssl() ? 'https://':'http://' ) . sanitize_text_field( wp_unslash( $_SERVER['HTTP_HOST'] ) ); // Input var okay. |
|
60
|
|
|
foreach ( $track as $k => $value ) { |
|
61
|
|
|
if ( strpos( strtolower( $value ), strtolower( $site_url ) ) === 0 ) { |
|
62
|
|
|
$track[ $k ] = substr( $track[ $k ], strlen( $site_url ) ); |
|
63
|
|
|
} |
|
64
|
|
|
if ( 'data' === $k ) { |
|
65
|
|
|
$track[ $k ] = preg_replace( '/^https?:\/\/|^\/+/i', '', $track[ $k ] ); |
|
66
|
|
|
} |
|
67
|
|
|
|
|
68
|
|
|
// This way we don't lose search data. |
|
69
|
|
|
if ( 'data' === $k && 'search' === $track['code'] ) { |
|
70
|
|
|
$track[ $k ] = rawurlencode( $track[ $k ] ); |
|
71
|
|
|
} else { |
|
72
|
|
|
$track[ $k ] = preg_replace( '/[^a-z0-9\.\/\+\?=-]+/i', '_', $track[ $k ] ); |
|
73
|
|
|
} |
|
74
|
|
|
|
|
75
|
|
|
$track[ $k ] = trim( $track[ $k ], '_' ); |
|
76
|
|
|
} |
|
77
|
|
|
$char = ( strpos( $track['data'], '?' ) === false ) ? '?' : '&'; |
|
78
|
|
|
return str_replace( "'", "\'", "/{$track['code']}/{$track['data']}{$char}referer=" . rawurlencode( isset( $_SERVER['HTTP_REFERER'] ) ? $_SERVER['HTTP_REFERER'] : '' ) ); // Input var okay. |
|
79
|
|
|
} |
|
80
|
|
|
|
|
81
|
|
|
/** |
|
82
|
|
|
* Maybe output or return, depending on the context |
|
83
|
|
|
*/ |
|
84
|
|
|
private function _output_or_return( $val, $maybe ) { |
|
85
|
|
|
if ( $maybe ) { |
|
86
|
|
|
echo $val . "\r\n"; |
|
87
|
|
|
} else { |
|
88
|
|
|
return $val; |
|
89
|
|
|
} |
|
90
|
|
|
} |
|
91
|
|
|
|
|
92
|
|
|
/** |
|
93
|
|
|
* This injects the Google Analytics code into the footer of the page. |
|
94
|
|
|
* |
|
95
|
|
|
* @param bool[optional] $output - defaults to true, false returns but does NOT echo the code. |
|
96
|
|
|
*/ |
|
97
|
|
|
public function insert_code( $output = true ) { |
|
98
|
|
|
// If $output is not a boolean false, set it to true (default). |
|
99
|
|
|
$output = ( false !== $output); |
|
100
|
|
|
|
|
101
|
|
|
$tracking_id = $this->_get_tracking_code(); |
|
102
|
|
|
if ( empty( $tracking_id ) ) { |
|
103
|
|
|
return $this->_output_or_return( '<!-- Your Google Analytics Plugin is missing the tracking ID -->', $output ); |
|
104
|
|
|
} |
|
105
|
|
|
|
|
106
|
|
|
// If we're in the admin_area, return without inserting code. |
|
107
|
|
|
if ( is_admin() ) { |
|
108
|
|
|
return $this->_output_or_return( '<!-- Your Google Analytics Plugin is set to ignore Admin area -->', $output ); |
|
109
|
|
|
} |
|
110
|
|
|
|
|
111
|
|
|
$custom_vars = array( |
|
112
|
|
|
"_gaq.push(['_setAccount', '{$tracking_id}']);", |
|
113
|
|
|
); |
|
114
|
|
|
|
|
115
|
|
|
$track = array(); |
|
116
|
|
|
if ( is_404() ) { |
|
117
|
|
|
// This is a 404 and we are supposed to track them. |
|
118
|
|
|
$custom_vars[] = "_gaq.push( [ '_trackEvent', '404', document.location.href, document.referrer ] );"; |
|
119
|
|
|
} elseif ( is_search() ) { |
|
120
|
|
|
// Set track for searches, if it's a search, and we are supposed to. |
|
121
|
|
|
$track['data'] = sanitize_text_field( wp_unslash( $_REQUEST['s'] ) ); // Input var okay. |
|
122
|
|
|
$track['code'] = 'search'; |
|
123
|
|
|
} |
|
124
|
|
|
|
|
125
|
|
|
if ( ! empty( $track ) ) { |
|
126
|
|
|
$track['url'] = $this->_get_url( $track ); |
|
127
|
|
|
// adjust the code that we output, account for both types of tracking. |
|
128
|
|
|
$track['url'] = esc_js( str_replace( '&', '&', $track['url'] ) ); |
|
129
|
|
|
$custom_vars[] = "_gaq.push(['_trackPageview','{$track['url']}']);"; |
|
130
|
|
|
} else { |
|
131
|
|
|
$custom_vars[] = "_gaq.push(['_trackPageview']);"; |
|
132
|
|
|
} |
|
133
|
|
|
|
|
134
|
|
|
$async_code = "<!-- Jetpack Google Analytics --> |
|
135
|
|
|
<script type='text/javascript'> |
|
136
|
|
|
var _gaq = _gaq || []; |
|
137
|
|
|
%custom_vars% |
|
138
|
|
|
|
|
139
|
|
|
(function() { |
|
140
|
|
|
var ga = document.createElement('script'); ga.type = 'text/javascript'; ga.async = true; |
|
141
|
|
|
ga.src = ('https:' == document.location.protocol ? 'https://ssl' : 'http://www') + '.google-analytics.com/ga.js'; |
|
142
|
|
|
var s = document.getElementsByTagName('script')[0]; s.parentNode.insertBefore(ga, s); |
|
143
|
|
|
})(); |
|
144
|
|
|
</script>"; |
|
145
|
|
|
|
|
146
|
|
|
$custom_vars_string = implode( "\r\n", $custom_vars ); |
|
147
|
|
|
$async_code = str_replace( '%custom_vars%', $custom_vars_string, $async_code ); |
|
148
|
|
|
|
|
149
|
|
|
return $this->_output_or_return( $async_code, $output ); |
|
150
|
|
|
} |
|
151
|
|
|
|
|
152
|
|
|
/** |
|
153
|
|
|
* Used to get the tracking code option |
|
154
|
|
|
* |
|
155
|
|
|
* @return tracking code option value. |
|
156
|
|
|
*/ |
|
157
|
|
|
private function _get_tracking_code() { |
|
158
|
|
|
$o = get_option( 'jetpack_wga' ); |
|
159
|
|
|
|
|
160
|
|
|
if ( isset( $o['code'] ) && preg_match( '#UA-[\d-]+#', $o['code'], $matches ) ) { |
|
161
|
|
|
return $o['code']; |
|
162
|
|
|
} |
|
163
|
|
|
|
|
164
|
|
|
return ''; |
|
165
|
|
|
} |
|
166
|
|
|
} |
|
167
|
|
|
|
|
168
|
|
|
global $jetpack_google_analytics; |
|
169
|
|
|
$jetpack_google_analytics = Jetpack_Google_Analytics::get_instance(); |
|
170
|
|
|
|
Automattic /
jetpack
Loading history...
The PSR-2 coding standard requires that all properties in a class have their visibility explicitly declared. If you declare a property using
the property is implicitly global.
To learn more about the PSR-2, please see the PHP-FIG site on the PSR-2.