1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 | function inject_check( $sql_str ) { return eregi ( 'select|insert|and|or|update|delete|\'|\/\*|\*|\.\.\/|\.\/|union|into|load_file|outfile' , $sql_str ); } function verify_id( $id =null) { if (! $id ) { exit ( '没有提交参数!' ); } elseif (inject_check( $id )) { exit ( '提交的参数非法!' ); } elseif (! is_numeric ( $id )) { exit ( '提交的参数非法!' ); } $id = intval ( $id ); return $id ; } function str_check( $str ) { if (!get_magic_quotes_gpc()) { $str = addslashes ( $str ); // 进行过滤 } $str = str_replace ( "_" , "\_" , $str ); $str = str_replace ( "%" , "\%" , $str ); return $str ; } function post_check( $post ) { if (!get_magic_quotes_gpc()) { $post = addslashes ( $post ); } $post = str_replace ( "_" , "\_" , $post ); $post = str_replace ( "%" , "\%" , $post ); $post = nl2br ( $post ); $post = htmlspecialchars( $post ); return $post ; } |