函数代码：
复制代码代码如下://php 批量过滤post,get敏感数据if (get_magic_quotes_gpc()) {$_GET = stripslashes_array($_GET);$_POST = stripslashes_array($_POST);}function stripslashes_array(&$array) {while(list($key,$var) = each($array)) {if ($key != 'argc' && $key != 'argv' && (strtoupper($key) != $key || ''.intval($key) == "$key")) {if (is_string($var)) {$array[$key] = stripslashes($var);}if (is_array($var)) {$array[$key] = stripslashes_array($var);}}}return $array;}//过滤function htmlencode($str){if(empty($str)) return;if($str=="") return $str;$str=trim($str);$str=str_replace("&","&",$str);$str=str_replace(">",">",$str);$str=str_replace("$str=str_replace(chr(32)," ",$str);$str=str_replace(chr(9)," ",$str);$str=str_replace(chr(9)," ",$str);$str=str_replace(chr(34),"&",$str);$str=str_replace(chr(39),"'",$str);$str=str_replace(chr(13),"",$str);$str=str_replace("'","''",$str);$str=str_replace("select","select",$str);$str=str_replace("SCRIPT","SCRIPT",$str);$str=str_replace("script","script",$str);$str=str_replace("join","join",$str);$str=str_replace("union","union",$str);$str=str_replace("where","where",$str);$str=str_replace("insert","insert",$str);$str=str_replace("delete","delete",$str);$str=str_replace("update","update",$str);$str=str_replace("like","like",$str);$str=str_replace("drop","drop",$str);$str=str_replace("create","create",$str);$str=str_replace("modify","modify",$str);$str=str_replace("rename","rename",$str);$str=str_replace("alter","alter",$str);$str=str_replace("cast","cas",$str);return $str;}//解码function htmldecode($str){if(empty($str)) return;if($str=="") return $str;$str=str_replace("select","select",$str);$str=str_replace("join","join",$str);$str=str_replace("union","union",$str);$str=str_replace("where","where",$str);$str=str_replace("insert","insert",$str);$str=str_replace("delete","delete",$str);$str=str_replace("update","update",$str);$str=str_replace("like","like",$str);$str=str_replace("drop","drop",$str);$str=str_replace("create","create",$str);$str=str_replace("modify","modify",$str);$str=str_replace("rename","rename",$str);$str=str_replace("alter","alter",$str);$str=str_replace("cas","cast",$str);$str=str_replace("&","&",$str);$str=str_replace(">",">",$str);$str=str_replace("$str=str_replace(" ",chr(32),$str);$str=str_replace(" ",chr(9),$str);$str=str_replace(" ",chr(9),$str);$str=str_replace("&",chr(34),$str);$str=str_replace("'",chr(39),$str);$str=str_replace("",chr(13),$str);$str=str_replace("''","'",$str);return $str;}// 函数：string_filter($string, $match_type=1)// 功能：过滤非法内容// 参数：// $string 需要检查的字符串// $match_type 匹配类型,1为精确匹配, 2为模糊匹配，默认为1//// 返回：有非法内容返回True，无非法内容返回False// 其他：非法关键字列表保存在txt文件里, 分为普通非法关键字和严重非法关键字两个列表// 作者：heiyeluren// 时间：2006-1-18////======================================================================function lib_lawless_string_filter($string, $match_type=1){//字符串空直接返回为非法$string = trim($string);if (empty($string)){return false;}//获取重要关键字列表和普通关键字列表$common_file = "common_list.txt"; //通用过滤关键字列表$signify_file = "signify_list.txt"; //重要过滤关键字列表//如果任何列表文件不存在直接返回false，否则把两个文件列表读取到两个数组里if (!file_exists($common_file) || !file_exists($signify_file)){return false;}$common_list = file($common_file);$signify_list = file($signify_file);//精确匹配if ($match_type == 1){$is_lawless = exact_match($string, $common_list);}//模糊匹配if ($match_type == 2){$is_lawless = blur_match($string, $common_list, $signify_list);}//判断检索结果数组中是否有数据，如果有，证明是非法的if (is_array($is_lawless) && !empty($is_lawless)){return true;}else{return false;}}//---------------------// 精确匹配,为过滤服务//---------------------function exact_match($string, $common_list){$string = trim($string);$string = lib_replace_end_tag($string);//检索普通过滤关键字列表foreach($common_list as $block){$block = trim($block);if (preg_match("/^$string$/i", $block)){$blist[] = $block;}}//判断有没有过滤内容在数组里if (!empty($blist)){return array_unique($blist);}return false;}//----------------------// 模糊匹配,为过滤服务//----------------------function blur_match($string, $common_list, $signify_list){$string = trim($string);$s_len = strlen($string);$string = lib_replace_end_tag($string);//检索普通过滤关键字列表foreach($common_list as $block){$block = trim($block);if (preg_match("/^$string$/i", $block)){$blist[] = $block;}}//检索严重过滤关键字列表foreach($signify_list as $block){$block = trim($block);if ($s_len>=strlen($block) && preg_match("/$block/i", $string)){$blist[] = $block;}}//判断有没有过滤内容在数组里if (!empty($blist)){return array_unique($blist);}return false;}//--------------------------// 替换HTML尾标签,为过滤服务//--------------------------function lib_replace_end_tag($str){if (empty($str)) return false;$str = htmlspecialchars($str);$str = str_replace( '/', "", $str);$str = str_replace("\", "", $str);$str = str_replace(">", "", $str);$str = str_replace("$str = str_replace("", "", $str);$str = str_replace("", "", $str);$str=str_replace("select","select",$str);$str=str_replace("join","join",$str);$str=str_replace("union","union",$str);$str=str_replace("where","where",$str);$str=str_replace("insert","insert",$str);$str=str_replace("delete","delete",$str);$str=str_replace("update","update",$str);$str=str_replace("like","like",$str);$str=str_replace("drop","drop",$str);$str=str_replace("create","create",$str);$str=str_replace("modify","modify",$str);$str=str_replace("rename","rename",$str);$str=str_replace("alter","alter",$str);$str=str_replace("cas","cast",$str);$str=str_replace("&","&",$str);$str=str_replace(">",">",$str);$str=str_replace("$str=str_replace(" ",chr(32),$str);$str=str_replace(" ",chr(9),$str);$str=str_replace(" ",chr(9),$str);$str=str_replace("&",chr(34),$str);$str=str_replace("'",chr(39),$str);$str=str_replace("",chr(13),$str);$str=str_replace("''","'",$str);$str=str_replace("css","'",$str);$str=str_replace("CSS","'",$str);return $str;//HTML标签，可以作为扩展过滤/*$tags = array("/html", "/head", "/body", "/div", "/span", "/DOCTYPE", "/title", "/link", "/meta", "/style", "/p", "/h1,", "/h2,", "/h3,", "/h4,", "/h5,", "/h6", "/strong", "/em", "/abbr", "/acronym", "/address", "/bdo", "/blockquote", "/cite", "/q", "/code", "/ins", "/del", "/dfn", "/kbd", "/pre", "/samp", "/var", "/br", "/a", "/img", "/area", "/map", "/object", "/param", "/ul", "/ol", "/li", "/dl", "/dt", "/dd", "/table", "/tr", "/td", "/th", "/tbody", "/thead", "/tfoot", "/col", "/colgroup", "/caption", "/form", "/input", "/textarea", "/select", "/option", "/optgroup", "/button", "/label", "/fieldset", "/legend", "/script", "/noscript", "/b", "/i", "/tt", "/sub", "/sup", "/big", "/small", "/hr" );*/}
代码：
引用是直接这样：
复制代码代码如下:$xxx = htmlspecialchars($_POST['xxx']);或者复制代码代码如下:$xxx = htmlspecialchars($_GET['xxx']);