PHP防止SQL注入攻击和XSS攻击

代码如下：

/**
 * 防SQL注入和XSS攻击
 * @param $arr
 */
function SafeFilter (&$arr)
{

   $ra=Array(\'/([\x00-\x08,\x0b-\x0c,\x0e-\x19])/\',\'/script/\',\'/javascript/\',\'/vbscript/\',\'/expression/\',\'/applet/\',\'/meta/\',\'/xml/\',\'/blink/\',\'/link/\',\'/style/\',\'/embed/\',\'/object/\',\'/frame/\',\'/layer/\',\'/title/\',\'/bgsound/\',\'/base/\',\'/onload/\',\'/onunload/\',\'/onchange/\',\'/onsubmit/\',\'/onreset/\',\'/onselect/\',\'/onblur/\',\'/onfocus/\',\'/onabort/\',\'/onkeydown/\',\'/onkeypress/\',\'/onkeyup/\',\'/onclick/\',\'/ondblclick/\',\'/onmousedown/\',\'/onmousemove/\',\'/onmouseout/\',\'/onmouseover/\',\'/onmouseup/\',\'/onunload/\');

   if (is_array($arr))
   {
     foreach ($arr as $key => $value)
     {
        if (!is_array($value))
        {
          if (!get_magic_quotes_gpc())             //不对magic_quotes_gpc转义过的字符使用addslashes(),避免双重转义。
          {
             $value  = addslashes($value);           //给单引号（\'）、双引号（"）、反斜线（\）与 NUL（NULL 字符）加上反斜线转义
          }
          $value       = preg_replace($ra,\'\',$value);     //删除非打印字符，粗暴式过滤xss可疑字符串
          $arr[$key]     = htmlentities(strip_tags($value)); //去除 HTML 和 PHP 标记并转换为 HTML 实体
        }
        else
        {
          SafeFilter($arr[$key]);
        }
     }
   }
}

发表于 2019-05-17 14:41 dreams7433 阅读(1500) 评论(0) 编辑收藏举报