PHP过滤post,get敏感数据的实例代码

<?php
//php 批量过滤post,get敏感数据 
//by www.jb200.com
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 $array; 
} 
//--------------------------
// 替换HTML尾标签,为过滤服务 
//-------------------------- 
function lib_replace_end_tag($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 = str_replace("<SCRIPT>", "", $str); 
$str = str_replace("</SCRIPT>", "", $str); 
$str = str_replace("<script>", "", $str); 
$str = str_replace("</script>", "", $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); 
$str=str_replace(" ",chr(32),$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); 
$str=str_replace("<br />",chr(13),$str); 
$str=str_replace("''","'",$str); 
$str=str_replace("css","'",$str); 
$str=str_replace("CSS","'",$str); 
 
return $str;
}