復制代碼 代碼如下:

<?PHP
//PHP整站防注入程序，需要在公共文件中require_once本文件
//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) {
//如果是數組，遍歷數組，遞歸調用
if (is_array ( $array )) {
foreach ( $array as $k => $v ) {
$array [$k] = sec ( $v );
}
} else if (is_string ( $array )) {
//使用addslashes函數來處理
$array = addslashes ( $array );
} else if (is_numeric ( $array )) {
$array = intval ( $array );
}
return $array;
}
//整型過濾函數
function num_check($id) {
if (! $id) {
die ( '參數不能為空！' );
} //是否為空的判斷
else if (inject_check ( $id )) {
die ( '非法參數' );
} //注入判斷
else if (! is_numetic ( $id )) {
die ( '非法參數' );
}
//數字判斷
$id = intval ( $id );
//整型化
return $id;
}
//字符過濾函數
function str_check($str) {
if (inject_check ( $str )) {
die ( '非法參數' );
}
//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 $str;
}
//表單過濾函數
function post_check($str, $min, $max) {
if (isset ( $min ) && strlen ( $str ) < $min) {
die ( '最少$min字節' );
} else if (isset ( $max ) && strlen ( $str ) > $max) {
die ( '最多$max字節' );
}
return stripslashes_array ( $str );
}
//防注入函數
function inject_check($sql_str) {
return eregi ( 'select|inert|update|delete|/'|///*|/*|/././/|/.//|UNION|into|load_file|outfile', $sql_str );
// 進行過濾，防注入
}
function stripslashes_array(&$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;
}
?>