php代码备份mysql数据库

$Database_name = 'somedb';
$table = 'sometable';

     Define ('H', 'localhost'); define ('N', 'root') define ('P','password'); define ('T', $database_name);
     Mysql_connect (H, N, P) or die (mysql_error ()); mysql_select_db (T) or die (mysql_error ());

     function Escape($v){return mysql_real_escape_string($v);}

     Define('FILE', 'C:/Program Files/EasyPHP 2.0b1/www/'. $table .'/'. date ('d').'-'. date (' m').'-' . date ('Y').'.php');
     Define('FP', fopen(FILE,'w'));

     $aa = mysql_list_tables($database_name); while ($a = mysql_fetch_row($aa))
     {

             $bb = mysql_query ('SELECT * FROM'. $a[0].''); $tt = mysql_num_rows($bb); $nb = mysql_num_fields($bb);
             If($tt>0)
             {
                 $p = 'INSERT INTO'. $a[0]. " VALUES ';

                 $t = 0;
                 while ($b = mysql_fetch_array($bb))
                 {
                     $ p .='(';
                     For ($i=0;$i
                     {
                            if ($i==0)
                            {
                                $p .= "'$b[$i]'";
                            }
                            else
                            {
                                $p .=' , ''. Escape($b[$ i]). ''';
                            }
                     }
                     $t++;

                     if ($t                     {
                         $ p .='),'."  n ";
                     }
                     else
                     {
                        $ p .=');'."  n";
                     }
                 }
                 $p .= "nnn";
                 fwrite(FP, $p);
             }
     }

     fclose(FP);
?>

php, mysql