仿照phpMyAdmin写的一个简单MYSQL备份、还原程序

仿照phpMyAdmin写的一个简单MYSQL备份、还原程序，已测试通过（不适合复杂结构），仅供参考！
config.php文件：
$dbhost="localhost";
$dbuser="root";
$dbpass="";
$dbname="test";
$filename="backup_".$dbname."_2002_10_16.sql";
$conn = mysql_pconnect($dbhost,$dbuser,$dbpass);
@mysql_select_db($dbname,$conn) or die(mysql_error());
set_time_limit(0);
?>

backup.php文件：
include("config.php");
$tables = mysql_list_tables($dbname);
$num_tables = @mysql_numrows($tables);
//header("Content-type: text/plain");
header("Content-Type: application/octetstream");
if(preg_match("/MSIE 5.5/", $HTTP_USER_AGENT))
{
   header("Content-Disposition: filename=$filename");
}
else
{
   header("Content-Disposition: attachment;filename=$filename");
}

echo "#  \n";
echo "# Database backup file \n";
echo "# copyright @ phpteam 20002-2003 \n";
echo "# \n";
echo "# Host    : " . $dbhost ."\n";
echo "# Database: " . $dbname ."\n";
echo "# Date    : " . date("d-M-Y",time()) . "\n";
echo "#  \n\n\n";

$i=0;
while ($i<$num_tables)
{
   $table = mysql_tablename($tables,$i);
   echo "#  \n";
   echo "# Table structure for table '$table' \n";
   echo "#  \n\n";
   // table structure
   $struc = "DROP TABLE IF EXISTS ".$table.";\n";
   $struc .= "CREATE TABLE $table (\n";
   $query = "SHOW FIELDS FROM $table";
   $result = mysql_query($query);
   while ($row=mysql_fetch_array($result))
   {
      $struc .= "  $row[Field] $row[Type]";
      if(!empty($row["Default"]))
      {
         $struc .= " DEFAULT '$row[Default]'";
      }
      if($row["Null"] != "YES")
      {
         $struc .= " NOT NULL";
      }
      if($row["Extra"] != "")
      {
         $struc .= " $row[Extra]";
      }
      $struc .= ",\n";
   }
   $query = "SHOW KEYS FROM $table";
   $result = mysql_query($query);
   $pkey_exist = mysql_num_rows($result);

   if($pkey_exist!=0)
   {
      $pkey = mysql_result($result,0,'column_name');
      $struc .= "  PRIMARY KEY ($pkey)\n";
   }
   else
   {
      // replace ,\n
      $struc = substr($struc,0, strlen($struc)-2);
      $struc .= "\n";
   }
   echo $struc;
   echo ");\n\n";

   // data
   echo "#  \n";
   echo "# Dumping data for table '$table' \n";
   echo "#  \n\n";
   $query = "select * from $table";
   $result = mysql_query($query);
   $j = 0;
   while($row=mysql_fetch_row($result))
   {
      $data .= "INSERT INTO $table VALUES(";
      for($k=0; $k      {
         if (!isset($row[$k]))
         {
            $data .= " NULL,";
         }
         elseif($row[$k]!="")
         {
            $data .= " '".addslashes($row[$k])."',";
         }
         else
         {
            $data .= " '',";
         }
      }
      // replace ,\n
      $data = substr($data,0, strlen($data)-1);
      $data .= ");\n";
      $j++;
   }
   echo $data."\n";
   $data = "";
   $i++;
}
?>

import.php文件：
include("config.php");
$fp = fopen($filename, "r");
while($buffer = fgets($fp, 10000))
{
   $buffer = trim($buffer);
   if(!empty($buffer) && substr($buffer,0,1) != "#")
   {
      if(substr($buffer,-2,2)==");")
      {
         $query .= $buffer;
         $result = mysql_query($query);
         $query = "";
      }
      else
      {
         $query .= $buffer;
      }
   }
}
fclose($fp);
echo $dbname." has restored!";
?>