<?PHP
/**
 * 备份MysqL数据库
 *
 * @param 
 * @arrange (512.笔记) jb51.cc
 **/

backup_tables('localhost','misslily','blog','*');
 
/* backup the db OR just a table */
function backup_tables($host,$user,$pass,$name,$tables = '*'){
 $return = "";
 $link = MysqL_connect($host,$pass);
 MysqL_select_db($name,$link);
 
 //get all of the tables
 if($tables == '*')
 {
  $tables = array();
  $result = MysqL_query('SHOW TABLES');
  while($row = MysqL_fetch_row($result))
  {
   $tables[] = $row[0];
  }
 }
 else
 {
  $tables = is_array($tables) ? $tables : explode(',',$tables);
 }
 
 //cycle through
 foreach($tables as $table)
 {
  $result = MysqL_query('SELECT * FROM '.$table);
  $num_fields = MysqL_num_fields($result);
 
  $return.= 'DROP TABLE '.$table.';';
  $row2 = MysqL_fetch_row(MysqL_query('SHOW CREATE TABLE '.$table));
  $return.= "\n\n".$row2[1].";\n\n";
 
  for ($i = 0; $i < $num_fields; $i++)
  {
   while($row = MysqL_fetch_row($result))
   {
    $return.= 'INSERT INTO '.$table.' VALUES(';
    for($j=0; $j<$num_fields; $j++)
    {
     $row[$j] = addslashes($row[$j]);
     $row[$j] = ereg_replace("\n","\\n",$row[$j]);
     if (isset($row[$j])) { $return.= '"'.$row[$j].'"' ; } else { $return.= '""'; }
     if ($j<($num_fields-1)) { $return.= ','; }
    }
    $return.= ");\n";
   }
  }
  $return.="\n\n\n";
 }
 
 //save file
 $handle = fopen('db-backup-'.time().'-'.(md5(implode(',$tables))).'.sql','w+');
 fwrite($handle,$return);
 fclose($handle);
}




/*** 来自：编程之家 jb51.cc（jb51.cc） ***/ 
?>