输入过滤

Posted 2020-10-05 ~灵动奇迹~

//输入过滤 同时去除连续空白字符可参考扩展库的remove_xss
function get_replace_input($str,$rptype=0){
   $str = stripslashes($str);
   $str = htmlspecialchars($str);
   $str = get_replace_nb($str);
   return addslashes($str);
}
//去除换行
function get_replace_nr($str){
   $str = str_replace(array("<nr/>","<rr/>"),array("\n","\r"),$str);
   return trim($str);
}
//去除连续空格
function get_replace_nb($str){
   $str = str_replace("&nbsp;",‘ ‘,$str);
   $str = str_replace("　",‘ ‘,$str);
   $str = ereg_replace("[\r\n\t ]{1,}",‘ ‘,$str);
   return trim($str);
}
//去除所有标准的HTML代码
function get_replace_html($str, $start=0, $length, $charset="utf-8", $suffix=false){
   return myubstr(eregi_replace(‘<[^>]+>‘,‘‘,ereg_replace("[\r\n\t ]{1,}",‘ ‘,get_replace_nb($str))),$start,$length,$charset,$suffix);
}

//生成字母前缀
function get_letter($s0){
   $firstchar_ord = ord(strtoupper($s0{0})); 
   if (($firstchar_ord>=65 and $firstchar_ord<=91)or($firstchar_ord>=48 and $firstchar_ord<=57)) return $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 0;
}

/**
 * [msubstr 截取字符串长度]
 * @param  [type]  $str     [description]
 * @param  integer $start   [description]
 * @param  [type]  $length  [description]
 * @param  string  $charset [description]
 * @param  boolean $suffix  [description]
 * @return [type]           [description]
 */
function myubstr($str, $start=0, $length, $charset="utf-8", $suffix=true){
   if(function_exists("mb_substr")){
      $slice = mb_substr($str, $start, $length, $charset);
   }elseif(function_exists(‘iconv_substr‘)) {
      $slice = iconv_substr($str,$start,$length,$charset);
      if(false === $slice) {
         $slice = ‘‘;
      }
   }else{
      $re[‘utf-8‘]   = "/[\x01-\x7f]|[\xc2-\xdf][\x80-\xbf]|[\xe0-\xef][\x80-\xbf]{2}|[\xf0-\xff][\x80-\xbf]{3}/";
      $re[‘gb2312‘] = "/[\x01-\x7f]|[\xb0-\xf7][\xa0-\xfe]/";
      $re[‘gbk‘]    = "/[\x01-\x7f]|[\x81-\xfe][\x40-\xfe]/";
      $re[‘big5‘]   = "/[\x01-\x7f]|[\x81-\xfe]([\x40-\x7e]|\xa1-\xfe])/";
      preg_match_all($re[$charset], $str, $match);
      $slice = join("",array_slice($match[0], $start, $length));
   }
   if(mb_strlen($str,‘utf8‘) > $length){
      return $suffix ? $slice.‘...‘ : $slice;
   }else{
      return  $slice;
   }
}


/**
 * 单向 MD5 加密
 */
function encrypt($password) {
   $password = md5($password.C(‘ENCRYPT_KEY‘));
   $start = substr($password, 0,8);
   $end   = substr($password, -8);
   $password = $start . $end;
   $password = md5($password);
   return $password;
}
/**
 * 验证手机号
 */
function check_mobile($mobilephone){
   //手机号码的正则验证
   if(preg_match("/^13[0-9]{1}[0-9]{8}$|15[012356789]{1}[0-9]{8}$|18[0-9]{1}[0-9]{8}$|17[0-9]{1}[0-9]{8}$/",$mobilephone)){
      return true;
   }else{
      return false;
   }
}
/**
 * 验证QQ
 * @param unknown_type $qqstr
 */
function check_qq($qqstr){
   $qq_reg = ‘/^[1-9]{1}[0-9]{4,11}$/‘;
   if (preg_match($qq_reg, $qqstr)){
      return true;
   }else{
      return false;
   }
}
/**
 * 验证固定电话
 */
function check_tel($tel){
   $tel_pattern = ‘/^(0?(([1-9]\d)|([3-9]\d{2}))-?)?\d{7,8}$/‘;
   if (preg_match($tel_pattern, $tel)){
      return true;
   }else{
      return false;
   }
}
/**
 * 验证邮箱
 */
function check_email($email){
   $chars = "/^([a-z0-9+_]|\\-|\\.)[email protected](([a-z0-9_]|\\-)+\\.)+[a-z]{2,5}\$/i";
   if (strpos($email, ‘@‘) !== false && strpos($email, ‘.‘) !== false){
      if (preg_match($chars, $email)){
         return true;
      }else{
         return false;
      }
   }else{
      return false;
   }
}
/**
 * [unique_arr 将二维数组中的重复值去除]
 * @param  [type]  $array2D  [description]
 * @param  boolean $stkeep   [description]
 * @param  boolean $ndformat [description]
 * @return [type]            [description]
 */
function unique_arr($array2D,$stkeep=false,$ndformat=true){
   // 判断是否保留一级数组键 (一级数组键可以为非数字)
   if($stkeep) $stArr = array_keys($array2D);
   // 判断是否保留二级数组键 (所有二级数组键必须相同)
   if($ndformat) $ndArr = array_keys(end($array2D));
   //降维,也可以用implode,将一维数组转换为用逗号连接的字符串
   foreach ($array2D as $v){
      $v = join(",",$v);
      $temp[] = $v;
   }
   //去掉重复的字符串,也就是重复的一维数组
   $temp = array_unique($temp);
   //再将拆开的数组重新组装
   foreach ($temp as $k => $v){
      if($stkeep) $k = $stArr[$k];
      if($ndformat)
      {
         $tempArr = explode(",",$v);
         foreach($tempArr as $ndkey => $ndval) $output[$k][$ndArr[$ndkey]] = $ndval;
      }
      else $output[$k] = explode(",",$v);
   }
   return $output;
}
/**
 * [rebuild_array 将二维数组转成一维数组]
 * @param  [type] $arr [description]
 * @return [type]      [description]
 */
function rebuild_array($arr){  //rebuild a array
   static $tmp=array();
   foreach($arr as $key=>$val){
      if(is_array($val)){
         rebuild_array($val);
      }else{
         $tmp[] = $val;
      }
   }
   return $tmp;
}
/**
 * 获取浏览者ip
 * @param unknown_type $default
 * @return unknown
 */
function GetRemoteIp($default=‘127.0.0.1‘){
   $ip_string = $_SERVER[‘HTTP_CLIENT_IP‘].‘,‘.$_SERVER[‘HTTP_X_FORWARDED_FOR‘].‘,‘.$_SERVER[‘REMOTE_ADDR‘];
   if ( preg_match ("/\d+\.\d+\.\d+\.\d+/", $ip_string, $matches) ) {
      return $matches[0];
   }
   return $default;
}

/**
 * 验证身份证号
 */

function isCreditNo($vStr)
{
   $vCity = array(
         ‘11‘,‘12‘,‘13‘,‘14‘,‘15‘,‘21‘,‘22‘,
         ‘23‘,‘31‘,‘32‘,‘33‘,‘34‘,‘35‘,‘36‘,
         ‘37‘,‘41‘,‘42‘,‘43‘,‘44‘,‘45‘,‘46‘,
         ‘50‘,‘51‘,‘52‘,‘53‘,‘54‘,‘61‘,‘62‘,
         ‘63‘,‘64‘,‘65‘,‘71‘,‘81‘,‘82‘,‘91‘
   );

   if (!preg_match(‘/^([\d]{17}[xX\d]|[\d]{15})$/‘, $vStr)) return false;

   if (!in_array(substr($vStr, 0, 2), $vCity)) return false;

   $vStr = preg_replace(‘/[xX]$/i‘, ‘a‘, $vStr);
   $vLength = strlen($vStr);

   if ($vLength == 18)
   {
      $vBirthday = substr($vStr, 6, 4) . ‘-‘ . substr($vStr, 10, 2) . ‘-‘ . substr($vStr, 12, 2);
   } else {
      $vBirthday = ‘19‘ . substr($vStr, 6, 2) . ‘-‘ . substr($vStr, 8, 2) . ‘-‘ . substr($vStr, 10, 2);
   }

   if (date(‘Y-m-d‘, strtotime($vBirthday)) != $vBirthday) return false;
   if ($vLength == 18)
   {
      $vSum = 0;

      for ($i = 17 ; $i >= 0 ; $i--)
      {
      $vSubStr = substr($vStr, 17 - $i, 1);
      $vSum += (pow(2, $i) % 11) * (($vSubStr == ‘a‘) ? 10 : intval($vSubStr , 11));
      }

      if($vSum % 11 != 1) return false;
}

return true;
}