[php+mysql] backup mysql database to file

backup_mysql_database_to_file.php

<?php

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

backup_tables('localhost','','','dbasename');

/* backup the db OR just a table */
function backup_tables($host,$user,$pass,$name,$tables = '*')
{
	
	$link = mysql_connect($host,$user,$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";
	}
	
	//------------ /* Backup Procedure structure*/
	$result = mysql_query('SHOW PROCEDURE STATUS');
	while($row = mysql_fetch_row($result)) {
		 $procedures[] = $row[1]; 
	}
	
	foreach($procedures as $proc)
	{
		$return.= "\n\nDELIMITER $$\n\n";
		$return.= "DROP PROCEDURE IF EXISTS `$name`.`$proc`$$\n";
		$rowX = mysql_fetch_row(mysql_query("SHOW CREATE PROCEDURE `$proc`"));
		$return.= "\n".$rowX[2]."$$\n\n";
		$return.= "DELIMITER ;\n\n";
	}
	//------------ /* Backup Procedure structure*/
	
	//save file
	$handle = fopen('db-backup-'.time().'-'.(md5(implode(',',$tables))).'.sql','w+');
	fwrite($handle,$return);
	fclose($handle);
}
?>