/*
*
* 生成验证字符串
*/
private function createNonceStr($length = 16)
{
$chars = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789";
$str = "";
for ($i = 0; $i < $length; $i++) {
$str .= substr($chars, mt_rand(0, strlen($chars) - 1), 1);
}
return $str;
}
/*
*
* 拼接签名字符串
* @param array $urlObj
*
* @return 返回已经拼接好的字符串
*/
private function ToUrlParams($urlObj)
{
$buff = "";
foreach ($urlObj as $k => $v)
{
if($k != "sign"){
$buff .= $k . "=" . $v . "&";
}
}
$buff = trim($buff, "&");
return $buff;
}
/*
* 获取中文字首字母信息
*/
function getfirstchar($s0)
{
$firstchar_ord = ord(strtoupper($s0{0}));
if (($firstchar_ord>=65 and $firstchar_ord<=91)or($firstchar_ord>=48 and $firstchar_ord<=57)) return strtoupper($s0{0});
$s=iconv("UTF-8","gb2312", $s0);
$asc=ord($s{0})*256+ord($s{1})-65536;
if($asc>=-20319 and $asc<=-20284)return "A";
if($asc>=-20283 and $asc<=-19776)return "B";
if($asc>=-19775 and $asc<=-19219)return "C";
if($asc>=-19218 and $asc<=-18711)return "D";
if($asc>=-18710 and $asc<=-18527)return "E";
if($asc>=-18526 and $asc<=-18240)return "F";
if($asc>=-18239 and $asc<=-17923)return "G";
if($asc>=-17922 and $asc<=-17418)return "H";
if($asc>=-17417 and $asc<=-16475)return "J";
if($asc>=-16474 and $asc<=-16213)return "K";
if($asc>=-16212 and $asc<=-15641)return "L";
if($asc>=-15640 and $asc<=-15166)return "M";
if($asc>=-15165 and $asc<=-14923)return "N";
if($asc>=-14922 and $asc<=-14915)return "O";
if($asc>=-14914 and $asc<=-14631)return "P";
if($asc>=-14630 and $asc<=-14150)return "Q";
if($asc>=-14149 and $asc<=-14091)return "R";
if($asc>=-14090 and $asc<=-13319)return "S";
if($asc>=-13318 and $asc<=-12839)return "T";
if($asc>=-12838 and $asc<=-12557)return "W";
if($asc>=-12556 and $asc<=-11848)return "X";
if($asc>=-11847 and $asc<=-11056)return "Y";
if($asc>=-11055 and $asc<=-10247)return "Z";
return null;
}
/**
* 获取客户端IP地址
* @param integer $type 返回类型 0 返回IP地址 1 返回IPV4地址数字
* @return mixed
*/
function get_client_ip($type = 0) {
$type = $type ? 1 : 0;
static $ip = NULL;
if ($ip !== NULL) return $ip[$type];
if (isset($_SERVER['HTTP_X_FORWARDED_FOR'])) {
$arr = explode(',', $_SERVER['HTTP_X_FORWARDED_FOR']);
$pos = array_search('unknown',$arr);
if(false !== $pos) unset($arr[$pos]);
$ip = trim($arr[0]);
}elseif (isset($_SERVER['HTTP_CLIENT_IP'])) {
$ip = $_SERVER['HTTP_CLIENT_IP'];
}elseif (isset($_SERVER['REMOTE_ADDR'])) {
$ip = $_SERVER['REMOTE_ADDR'];
}
// IP地址合法验证
$long = sprintf("%u",ip2long($ip));
$ip = $long ? array($ip, $long) : array('0.0.0.0', 0);
return $ip[$type];
}
/**
* 字符串加密、解密函数
*
*
* @param string $txt 字符串
* @param string $operation ENCODE为加密，DECODE为解密，可选参数，默认为ENCODE，
* @param string $key 密钥：数字、字母、下划线
* @param string $expiry 过期时间
* @return string
*/
function encry_code($string, $operation = 'ENCODE', $key = '', $expiry = 0) {
$ckey_length = 4;
$key = md5($key != '' ? $key : config('encry_key'));
$keya = md5(substr($key, 0, 16));
$keyb = md5(substr($key, 16, 16));
$keyc = $ckey_length ? ($operation == 'DECODE' ? substr($string, 0, $ckey_length) : substr(md5(microtime()), -$ckey_length)) : '';
$cryptkey = $keya . md5($keya . $keyc);
$key_length = strlen($cryptkey);
$string = $operation == 'DECODE' ? base64_decode(strtr(substr($string, $ckey_length), '-_', '+/')) : sprintf('%010d', $expiry ? $expiry + time() : 0) . substr(md5($string . $keyb), 0, 16) . $string;
$string_length = strlen($string);
$result = '';
$box = range(0, 255);
$rndkey = array();
for ($i = 0; $i <= 255; $i++) {
$rndkey[$i] = ord($cryptkey[$i % $key_length]);
}
for ($j = $i = 0; $i < 256; $i++) {
$j = ($j + $box[$i] + $rndkey[$i]) % 256;
$tmp = $box[$i];
$box[$i] = $box[$j];
$box[$j] = $tmp;
}
for ($a = $j = $i = 0; $i < $string_length; $i++) {
$a = ($a + 1) % 256;
$j = ($j + $box[$a]) % 256;
$tmp = $box[$a];
$box[$a] = $box[$j];
$box[$j] = $tmp;
$result .= chr(ord($string[$i]) ^ ($box[($box[$a] + $box[$j]) % 256]));
}
if ($operation == 'DECODE') {
if ((substr($result, 0, 10) == 0 || substr($result, 0, 10) - time() > 0) && substr($result, 10, 16) == substr(md5(substr($result, 26) . $keyb), 0, 16)) {
return substr($result, 26);
} else {
return '';
}
} else {
return $keyc . rtrim(strtr(base64_encode($result), '+/', '-_'), '=');
}
}
/*
* 函数说明：截取指定长度的字符串
* utf-8专用 汉字和大写字母长度算1，其它字符长度算0.5
*
* @param string $str 原字符串
* @param int $len 截取长度
* @param string $etc 省略字符...
* @return string 截取后的字符串
*/
function ReStrLen($str, $len=10, $etc='...')
{
$restr = '';
$i = 0;
$n = 0.0;
//字符串的字节数
$strlen = strlen($str);
while(($n < $len) and ($i < $strlen))
{
$temp_str = substr($str, $i, 1);
//得到字符串中第$i位字符的ASCII码
$ascnum = ord($temp_str);
//如果ASCII位高与252
if($ascnum >= 252)
{
//根据UTF-8编码规范，将6个连续的字符计为单个字符
$restr = $restr.substr($str, $i, 6);
//实际Byte计为6
$i = $i + 6;
//字串长度计1
$n++;
}
else if($ascnum >= 248)
{
$restr = $restr.substr($str, $i, 5);
$i = $i + 5;
$n++;
}
else if($ascnum >= 240)
{
$restr = $restr.substr($str, $i, 4);
$i = $i + 4;
$n++;
}
else if($ascnum >= 224)
{
$restr = $restr.substr($str, $i, 3);
$i = $i + 3 ;
$n++;
}
else if ($ascnum >= 192)
{
$restr = $restr.substr($str, $i, 2);
$i = $i + 2;
$n++;
}
//如果是大写字母 I除外
else if($ascnum>=65 and $ascnum<=90 and $ascnum!=73)
{
$restr = $restr.substr($str, $i, 1);
//实际的Byte数仍计1个
$i = $i + 1;
//但考虑整体美观，大写字母计成一个高位字符
$n++;
}
//%,&,@,m,w 字符按1个字符宽
else if(!(array_search($ascnum, array(37, 38, 64, 109 ,119)) === FALSE))
{
$restr = $restr.substr($str, $i, 1);
//实际的Byte数仍计1个
$i = $i + 1;
//但考虑整体美观，这些字条计成一个高位字符
$n++;
}
//其他情况下，包括小写字母和半角标点符号
else
{
$restr = $restr.substr($str, $i, 1);
//实际的Byte数计1个
$i = $i + 1;
//其余的小写字母和半角标点等与半个高位字符宽
$n = $n + 0.5;
}
}
//超过长度时在尾处加上省略号
if($i < $strlen)
{
$restr = $restr.$etc;
}
return $restr;
}
/*
* 获得当前的页面文件的url
*/
public function GetCurUrl()
{
if(!empty($_SERVER['REQUEST_URI']))
{
$nowurls = explode('?',$_SERVER['REQUEST_URI']);
$nowurl = $nowurls[0];
}
else
{
$nowurl = $_SERVER['PHP_SELF'];
}
return $nowurl;
}
//查看数据大小
function GetRealSize($size)
{
$kb = 1024; // Kilobyte
$mb = 1024 * $kb; // Megabyte
$gb = 1024 * $mb; // Gigabyte
$tb = 1024 * $gb; // Terabyte
if($size < $kb)
return $size.'B';
else if($size < $mb)
return round($size/$kb,2).'KB';
else if($size < $gb)
return round($size/$mb,2).'MB';
else if($size < $tb)
return round($size/$gb,2).'GB';
else
return round($size/$tb,2).'TB';
}
//获取文件夹大小
function GetDirSize($dir)
{
$handle = opendir($dir);
$fsize = '';
while(($fname = readdir($handle)) !== false)
{
if($fname != '.' && $fname != '..')
{
if(is_dir("$dir/$fname"))
$fsize += GetDirSize("$dir/$fname");
else
$fsize += filesize("$dir/$fname");
}
}
closedir($handle);
if(empty($fsize)) $fsize = 0;
return $fsize;
}
//创建多级目录
function MkDirs($dir)
{
return is_dir($dir) or (MkDirs(dirname($dir)) and mkdir($dir, 0777));
}
//读取文件内容
function Readf($file)
{
if(file_exists($file) && is_readable($file))
{
if(function_exists('file_get_contents'))
{
$str = file_get_contents($file);
}
else
{
$str = '';
$fp = fopen($file, 'r');
while(!feof($fp))
{
$str .= fgets($fp, 1024);
}
fclose($fp);
}
return $str;
}
else
{
return FALSE;
}
}
// 写入文件内容
function Writef($file,$str,$mode='w')
{
if(file_exists($file) && is_writable($file))
{
$fp = fopen($file, $mode);
flock($fp, 3);
fwrite($fp, $str);
fclose($fp);
return TRUE;
}
else if(!file_exists($file))
{
$fp = fopen($file, $mode);
flock($fp, 3);
fwrite($fp, $str);
fclose($fp);
}
else
{
return FALSE;
}
}
// 清除HTML
function ClearHtml($str)
{
$str = strip_tags($str);
//首先去掉头尾空格
$str = trim($str);
//接着去掉两个空格以上的
$str = preg_replace('/\s(?=\s)/', '', $str);
//最后将非空格替换为一个空格
$str = preg_replace('/[\n\r\t]/', ' ', $str);
return $str;
}
// 是否移动设备访问
function IsMobile()
{
//如果有HTTP_X_WAP_PROFILE则一定是移动设备
if(isset($_SERVER['HTTP_X_WAP_PROFILE'])) return TRUE;
//如果via信息含有wap则一定是移动设备,部分服务商会屏蔽该信息
if(isset($_SERVER['HTTP_VIA']))
{
//找不到为flase,否则为true
return stristr($_SERVER['HTTP_VIA'], "wap") ? true : false;
}
//判断手机发送的客户端标志,兼容性有待提高
if(isset($_SERVER['HTTP_USER_AGENT']))
{
$clientkeywords = array('nokia','sony','ericsson','mot','samsung','htc','sgh','lg','sharp','sie-','philips','panasonic','alcatel','lenovo','iphone','ipod','blackberry','meizu','android','netfront','symbian','ucweb','windowsce','palm','operamini','operamobi','openwave','nexusone','cldc','midp','wap','mobile');
//从HTTP_USER_AGENT中查找手机浏览器的关键字
if(preg_match('/('.implode('|', $clientkeywords).')/i', strtolower($_SERVER['HTTP_USER_AGENT'])))
{
return TRUE;
}
}
//协议法，因为有可能不准确，放到最后判断
if(isset($_SERVER['HTTP_ACCEPT']))
{
//如果只支持wml并且不支持html那一定是移动设备
//如果支持wml和html但是wml在html之前则是移动设备
if((strpos($_SERVER['HTTP_ACCEPT'], 'vnd.wap.wml') !== false) &&
(strpos($_SERVER['HTTP_ACCEPT'], 'text/html') === false ||
(strpos($_SERVER['HTTP_ACCEPT'], 'vnd.wap.wml') < strpos($_SERVER['HTTP_ACCEPT'], 'text/html'))))
{
return TRUE;
}
}
return FALSE;
}