<?php

$server='';		// serveur mysql
$login='';		//login mysql
$mdp='';		//mot de passe mysql
$backupdir='/home/a4327242/backup_db';		// pour savoir le répertoire local de votre hébergeur si c'est pas indiqué, faite la commande 'pwd' dans l'interface cron
$logfile='/home/a4327242/backup_db/backup_db.log';
$timezone='Europe/Brussels';	// pour les heures des fichier de logs

//un appel par base de données (souvent une seule pour un hébergeur)
backup_tables($server,$login,$mdp,$backupdir,$timezone,$logfile,'nom_base_de_donnees');


/* backup the db OR just a table */
function backup_tables($host,$user,$pass,$backupdir,$timezone,$log,$name,$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";
	}
	
	//save file
	$date = new DateTime();
	$date->setTimeZone(new DateTimeZone($timezone));

	$filename=$backupdir.'/db-'.$name.'-'.$date->format('Y-m-d H:i').'-'.(md5(implode(',',$tables))).'.sql';
	$handle = fopen($filename,'w+');
	fwrite($handle,$return);
	fclose($handle);
	echo "File $filename create successful";
}

?>