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<?php |
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/** |
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* Funcs about client side info |
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* |
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* @package fwolflib |
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* @subpackage func |
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* @copyright Copyright 2003-2009, Fwolf |
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* @author Fwolf <[email protected]> |
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* @since 2006-07-03 |
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*/ |
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require_once(dirname(__FILE__) . '/../fwolflib.php'); |
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/** |
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* Convert user ip from hex string |
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* |
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* @deprecated Use Fwlib\Util\Ip::fromHex() |
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* @param string $hex |
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* @return string |
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* @link http://us.php.net/uniqid |
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*/ |
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View Code Duplication |
function ClientIpFromHex($hex) { |
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$ip = ""; |
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if (8 == strlen($hex)) { |
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$ip .= hexdec(substr($hex ,0 ,2)) . '.'; |
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$ip .= hexdec(substr($hex ,2 ,2)) . '.'; |
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$ip .= hexdec(substr($hex ,4 ,2)) . '.'; |
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$ip .= hexdec(substr($hex ,6 ,2)); |
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} |
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return $ip; |
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} // end of func ClientIpFromHex |
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/** |
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* Convert user ip to hex string |
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* |
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* @deprecated Use Fwlib\Util\Ip::toHex() |
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* @param string $ip |
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* @return string |
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* @link http://us.php.net/uniqid |
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*/ |
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function ClientIpToHex($ip = "") { |
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$hex = ""; |
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if('' == $ip) |
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//$ip = getenv('REMOTE_ADDR'); |
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$ip = GetClientIp(); |
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View Code Duplication |
if (false == ip2long($ip)) |
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return ''; |
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else { |
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$part = explode('.', $ip); |
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if (4 != count($part)) |
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return ''; |
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else |
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for ($i=0; $i<=count($part)-1; $i++) { |
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$hex .= substr('0' . dechex($part[$i]), -2); |
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} |
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} |
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return $hex; |
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} // end of func ClientIpToHex |
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/** |
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* 检查客户端的浏览器是NS还是IE |
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* |
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* @deprecated Use Fwlib\Util\HttpUtil::getBrowserType() |
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* @return string |
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*/ |
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function GetBrowserType() |
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{ |
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$str = isset($_SERVER['HTTP_USER_AGENT']) ? $_SERVER['HTTP_USER_AGENT'] : ''; |
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if (false === strpos($str, 'MSIE')) { |
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return('NS'); |
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} |
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else { |
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return('IE'); |
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} |
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} // end func GetBrowserType |
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/** |
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* Get ip of client |
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* |
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* @deprecated Use Fwlib\Util\HttpUtil::getClientIp() |
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* @return string |
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* @link http://roshanbh.com.np/2007/12/getting-real-ip-address-in-php.html |
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*/ |
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function GetClientIp() { |
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$s = ''; |
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// Original way: check ip from share internet |
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if (!empty($_SERVER['HTTP_CLIENT_IP'])) { |
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$s = $_SERVER['HTTP_CLIENT_IP']; |
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} |
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// Using proxy ? |
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elseif (!empty($_SERVER['HTTP_X_FORWARDED_FOR'])) { |
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$s = $_SERVER['HTTP_X_FORWARDED_FOR']; |
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} |
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// Another way |
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elseif (!empty($_SERVER['REMOTE_ADDR'])) { |
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$s = $_SERVER['REMOTE_ADDR']; |
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} |
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else { |
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$s = ''; |
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} |
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return $s; |
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} // end of func GetClientIp |
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?> |
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This check looks for variable assignements that are either overwritten by other assignments or where the variable is not used subsequently.
Both the
$myVar
assignment in line 1 and the$higher
assignment in line 2 are dead. The first because$myVar
is never used and the second because$higher
is always overwritten for every possible time line.