loginizer / functions.php

functions.php in Loginizer 1.0.1, at functions.php

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1	<?php
2
3	// Get the client IP
4	function lz_getip(){
5	if(isset($_SERVER["REMOTE_ADDR"])){
6	return $_SERVER["REMOTE_ADDR"];
7	}elseif(isset($_SERVER["HTTP_X_FORWARDED_FOR"])){
8	return $_SERVER["HTTP_X_FORWARDED_FOR"];
9	}elseif(isset($_SERVER["HTTP_CLIENT_IP"])){
10	return $_SERVER["HTTP_CLIENT_IP"];
11	}
12	}
13
14	// Execute a select query and return an array
15	function lz_selectquery($query, $array = 0){
16	global $wpdb;
17
18	$result = $wpdb->get_results($query, 'ARRAY_A');
19
20	if(empty($array)){
21	return current($result);
22	}else{
23	return $result;
24	}
25	}
26
27	// Check if an IP is valid
28	function lz_valid_ip($ip){
29
30	if(!ip2long($ip)){
31	return false;
32	}
33	return true;
34	}
35
36	// Check if a field is posted via POST else return default value
37	function lz_optpost($name, $default = ''){
38
39	if(!empty($_POST[$name])){
40	return lz_inputsec(lz_htmlizer(trim($_POST[$name])));
41	}
42
43	return $default;
44	}
45
46	// Check if a field is posted via GET else return default value
47	function lz_optget($name, $default = ''){
48
49	if(!empty($_GET[$name])){
50	return lz_inputsec(lz_htmlizer(trim($_GET[$name])));
51	}
52
53	return $default;
54	}
55
56	// Check if a field is posted via GET or POST else return default value
57	function lz_optreq($name, $default = ''){
58
59	if(!empty($_REQUEST[$name])){
60	return lz_inputsec(lz_htmlizer(trim($_REQUEST[$name])));
61	}
62
63	return $default;
64	}
65
66	function lz_inputsec($string){
67
68	if(!get_magic_quotes_gpc()){
69
70	$string = addslashes($string);
71
72	}else{
73
74	$string = stripslashes($string);
75	$string = addslashes($string);
76
77	}
78
79	// This is to replace ` which can cause the command to be executed in exec()
80	$string = str_replace('`', '\`', $string);
81
82	return $string;
83
84	}
85
86	function lz_htmlizer($string){
87
88	$string = htmlentities($string, ENT_QUOTES, 'UTF-8');
89
90	$string = preg_replace('/(&#(\d{1,7}\|x[0-9a-fA-F]{1,6});)/e', 'entity_check(\\2);', $string);
91
92	return $string;
93
94	}
95
96	// Check if a checkbox is selected
97	function lz_is_checked($post){
98
99	if(!empty($_POST[$post])){
100	return true;
101	}
102	return false;
103	}
104
105	// Reoort an error
106	function lz_report_error($error = array()){
107
108	if(empty($error)){
109	return true;
110	}
111
112	$error_string = '<b>Please fix the below error(s) :</b> <br />';
113
114	foreach($error as $ek => $ev){
115	$error_string .= '* '.$ev.'<br />';
116	}
117
118	echo '<div id="message" class="error"><p>'
119	. __($error_string, 'loginizer')
120	. '</p></div>';
121	}
122
123	// Report a notice
124	function lz_report_notice($notice = array()){
125
126	global $wp_version;
127
128	if(empty($notice)){
129	return true;
130	}
131
132	// Which class do we have to use ?
133	if(version_compare($wp_version, '3.8', '<')){
134	$notice_class = 'updated';
135	}else{
136	$notice_class = 'updated';
137	}
138
139	$notice_string = '<b>Please check the below notice(s) :</b> <br />';
140
141	foreach($notice as $ek => $ev){
142	$notice_string .= '* '.$ev.'<br />';
143	}
144
145	echo '<div id="message" class="'.$notice_class.'"><p>'
146	. __($notice_string, 'loginizer')
147	. '</p></div>';
148	}
149
150	// Convert an objext to array
151	function lz_objectToArray($d){
152
153	if(is_object($d)){
154	$d = get_object_vars($d);
155	}
156
157	if(is_array($d)){
158	return array_map(__FUNCTION__, $d); // recursive
159	}elseif(is_object($d)){
160	return lz_objectToArray($d);
161	}else{
162	return $d;
163	}
164	}
165
166	// Sanitize variables
167	function lz_sanitize_variables($variables = array()){
168
169	if(is_array($variables)){
170	foreach($variables as $k => $v){
171	$variables[$k] = trim($v);
172	$variables[$k] = escapeshellcmd($v);
173	}
174	}else{
175	$variables = escapeshellcmd(trim($variables));
176	}
177
178	return $variables;
179	}
180
181	// Is multisite ?
182	function lz_is_multisite() {
183
184	if(function_exists('get_site_option') && function_exists('is_multisite') && is_multisite()){
185	return true;
186	}
187
188	return false;
189	}
190
191