loginizer / functions.php

functions.php in Loginizer 1.0, 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 $_SERVER["HTTP_CLIENT_IP"];
11	}
12	}
13
14	// Get the value of option from lz_options table
15	function lz_get_option($option_name, $default = ''){
16
17	global $wpdb;
18
19	$result = lz_selectquery("SELECT `option_value` FROM `".$wpdb->prefix."lz_options` WHERE `option_name` = '".$option_name."';");
20
21	if(!empty($result['option_value'])){
22	return $result['option_value'];
23	}
24
25	return $default;
26	}
27
28	// Update the value of an option in lz_options table
29	function lz_update_option($option_name, $value){
30
31	global $wpdb;
32
33	$result = $wpdb->query("INSERT INTO `".$wpdb->prefix."lz_options` SET `option_name` = '".$option_name."', `option_value` = '".$value."', `updated` = '".time()."' ON DUPLICATE KEY UPDATE `option_value` = '".$value."', `updated` = '".time()."';");
34
35	if(empty($result)){
36	return false;
37	}
38
39	return true;
40	}
41
42	// Execute a select query and return an array
43	function lz_selectquery($query, $array = 0){
44	global $wpdb;
45
46	$result = $wpdb->get_results($query, 'ARRAY_A');
47
48	if(empty($array)){
49	return current($result);
50	}else{
51	return $result;
52	}
53	}
54
55	// Check if an IP is valid
56	function lz_valid_ip($ip){
57
58	if(!ip2long($ip)){
59	return false;
60	}
61	return true;
62	}
63
64	// Check if a field is posted via POST else return default value
65	function lz_optpost($name, $default = ''){
66
67	if(!empty($_POST[$name])){
68	return lz_inputsec(lz_htmlizer(trim($_POST[$name])));
69	}
70
71	return $default;
72	}
73
74	// Check if a field is posted via GET else return default value
75	function lz_optget($name, $default = ''){
76
77	if(!empty($_GET[$name])){
78	return lz_inputsec(lz_htmlizer(trim($_GET[$name])));
79	}
80
81	return $default;
82	}
83
84	// Check if a field is posted via GET or POST else return default value
85	function lz_optreq($name, $default = ''){
86
87	if(!empty($_REQUEST[$name])){
88	return lz_inputsec(lz_htmlizer(trim($_REQUEST[$name])));
89	}
90
91	return $default;
92	}
93
94	function lz_inputsec($string){
95
96	if(!get_magic_quotes_gpc()){
97
98	$string = addslashes($string);
99
100	}else{
101
102	$string = stripslashes($string);
103	$string = addslashes($string);
104
105	}
106
107	// This is to replace ` which can cause the command to be executed in exec()
108	$string = str_replace('`', '\`', $string);
109
110	return $string;
111
112	}
113
114	function lz_htmlizer($string){
115
116	$string = htmlentities($string, ENT_QUOTES, 'UTF-8');
117
118	$string = preg_replace('/(&#(\d{1,7}\|x[0-9a-fA-F]{1,6});)/e', 'entity_check(\\2);', $string);
119
120	return $string;
121
122	}
123
124	// Check if a checkbox is selected
125	function lz_is_checked($post){
126
127	if(!empty($_POST[$post])){
128	return true;
129	}
130	return false;
131	}
132
133	// Reoort an error
134	function lz_report_error($error = array()){
135
136	if(empty($error)){
137	return true;
138	}
139
140	$error_string = '<b>Please fix the below error(s) :</b> <br />';
141
142	foreach($error as $ek => $ev){
143	$error_string .= '* '.$ev.'<br />';
144	}
145
146	echo '<div id="message" class="error"><p>'
147	. __($error_string, 'loginizer')
148	. '</p></div>';
149	}
150
151	// Report a notice
152	function lz_report_notice($notice = array()){
153
154	global $wp_version;
155
156	if(empty($notice)){
157	return true;
158	}
159
160	// Which class do we have to use ?
161	if(version_compare($wp_version, '3.8', '<')){
162	$notice_class = 'updated';
163	}else{
164	$notice_class = 'updated';
165	}
166
167	$notice_string = '<b>Please check the below notice(s) :</b> <br />';
168
169	foreach($notice as $ek => $ev){
170	$notice_string .= '* '.$ev.'<br />';
171	}
172
173	echo '<div id="message" class="'.$notice_class.'"><p>'
174	. __($notice_string, 'loginizer')
175	. '</p></div>';
176	}
177
178	// Convert an objext to array
179	function lz_objectToArray($d){
180
181	if(is_object($d)){
182	$d = get_object_vars($d);
183	}
184
185	if(is_array($d)){
186	return array_map(__FUNCTION__, $d); // recursive
187	}elseif(is_object($d)){
188	return lz_objectToArray($d);
189	}else{
190	return $d;
191	}
192	}
193
194	// Sanitize variables
195	function lz_sanitize_variables($variables = array()){
196
197	if(is_array($variables)){
198	foreach($variables as $k => $v){
199	$variables[$k] = trim($v);
200	$variables[$k] = escapeshellcmd($v);
201	}
202	}else{
203	$variables = escapeshellcmd(trim($variables));
204	}
205
206	return $variables;
207	}
208
209	// Is multisite ?
210	function lz_is_multisite() {
211
212	if(function_exists('get_site_option') && function_exists('is_multisite') && is_multisite()){
213	return true;
214	}
215
216	return false;
217	}
218
219	?>