Posted By

iTony on 03/04/09


Tagged

mysql database php backup


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Backup MySQL Databas with PHP


 / Published in: PHP
 

URL: http://davidwalsh.name/backup-mysql-database-php

  1. /* backup the db OR just a table */
  2. function backup_tables($host,$user,$pass,$name,$tables = '*')
  3. {
  4.  
  5. $link = mysql_connect($host,$user,$pass);
  6. mysql_select_db($name,$link);
  7.  
  8. //get all of the tables
  9. if($tables == '*')
  10. {
  11. $tables = array();
  12. $result = mysql_query('SHOW TABLES');
  13. while($row = mysql_fetch_row($result))
  14. {
  15. $tables[] = $row[0];
  16. }
  17. }
  18. else
  19. {
  20. $tables = is_array($tables) ? $tables : explode(',',$tables);
  21. }
  22.  
  23. //cycle through
  24. foreach($tables as $table)
  25. {
  26. $result = mysql_query('SELECT * FROM '.$table);
  27. $num_fields = mysql_num_fields($result);
  28.  
  29. $return.= 'DROP TABLE '.$table.';';
  30. $row2 = mysql_fetch_row(mysql_query('SHOW CREATE TABLE '.$table));
  31. $return.= "\n\n".$row2[1].";\n\n";
  32.  
  33. for ($i = 0; $i < $num_fields; $i++)
  34. {
  35. while($row = mysql_fetch_row($result))
  36. {
  37. $return.= 'INSERT INTO '.$table.' VALUES(';
  38. for($j=0; $j<$num_fields; $j++)
  39. {
  40. $row[$j] = addslashes($row[$j]);
  41. $row[$j] = ereg_replace("\n","\\n",$row[$j]);
  42. if (isset($row[$j])) { $return.= '"'.$row[$j].'"' ; } else { $return.= '""'; }
  43. if ($j<($num_fields-1)) { $return.= ','; }
  44. }
  45. $return.= ");\n";
  46. }
  47. }
  48. $return.="\n\n\n";
  49. }
  50.  
  51. //save file
  52. $handle = fopen('db-backup-'.time().'-'.(md5(implode(',',$tables))).'.sql','w+');
  53. fwrite($handle,$return);
  54. fclose($handle);
  55. }

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