通用的PHP防注入漏洞攻擊的過濾函式程式碼
阿新 • • 發佈：2019-02-03
<?PHP
//PHP整站防注入程式，需要在公共檔案中require_once本檔案//判斷magic_quotes_gpc狀態
if (@get_magic_quotes_gpc ()) {
$_GET = sec ( $_GET );
$_POST = sec ( $_POST );
$_COOKIE = sec ( $_COOKIE );
$_FILES = sec ( $_FILES );
}
$_SERVER = sec ( $_SERVER );
function sec(&$array) {
//如果是陣列，遍歷陣列，遞迴呼叫
if (is_array ( $array )) {
foreach ( $array as $k => $v ) {
$array [$k] = sec ( $v );
}
} else if (is_string ( $array )) {
//使用addslashes函式來處理
$array = addslashes ( $array );
} else if (is_numeric ( $array )) {
$array = intval ( $array );
}
return $array;
}
//整型過濾函式
function num_check($id) {
if (! $id) {
die ( '引數不能為空！' );
} //是否為空的判斷
else if (inject_check ( $id )) {
die ( '非法引數' );
} //注入判斷
else if (! is_numetic ( $id )) {
die ( '非法引數' );
}
//數字判斷
$id = intval ( $id );
//整型化
return $id;
}
//字元過濾函式
function str_check($str) {
if (inject_check ( $str )) {
die ( '非法引數' );
}
//注入判斷
$str = htmlspecialchars ( $str );
//轉換html
return $str;
}
function search_check($str) {
$str = str_replace ( "_", "\_", $str );
//把"_"過濾掉
$str = str_replace ( "%", "\%", $str );
//把"%"過濾掉
$str = htmlspecialchars ( $str );
//轉換html
return $str;
}
//表單過濾函式
function post_check($str, $min, $max) {
if (isset ( $min ) && strlen ( $str ) < $min) {
die ( '最少$min位元組' );
} else if (isset ( $max ) && strlen ( $str ) > $max) {
die ( '最多$max位元組' );
}
return stripslashes_array ( $str );
}
//防注入函式
function inject_check($sql_str) {
return eregi ( 'select|inert|update|delete|\'|\/\*|\*|\.\.\/|\.\/|UNION|into|load_file|outfile', $sql_str );
// www.q3060.com 進行過濾，防注入
}
function stripslashes_array(&$array) {
if (is_array ( $array )) {
foreach ( $array as $k => $v ) {
$array [$k] = stripslashes_array ( $v );
}
} else if (is_string ( $array )) {
$array = stripslashes ( $array );
}
return $array;
}
?>