Taking mysql data backup with php5

Question

I am using php5 and mysql5.- in my local server

1. I want to take mysql database backup ( in my local server ) - just by copying the datafile ( located in mysql server in the folder data )

2. I have copied a particular table name account.frm file - but it is not working It is showing the table name but it is showing error that ( I checked in the mysql query browser ) that cannot fetch the table details.

3. I have used mysqldump it is also not working.

Please help me to take backup and work correctly.

Answer 1

Did you tried backuping your database with phpmyadmin http://www.phpmyadmin.net/home_page/index.php ?

you should have phpmyadmin installed, - if you installed localserver bundle, but if not take a look at this php function for backuping database :

function backup_tables($tables = '*')
{
// the $db var is connection to your database!
     global $db;

    //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
        // specifiy the path where you want to backup the file...
    $filess = 'db-backup-'.time().'-'.(md5(implode(',',$tables))).'.sql';
    $handle = fopen($filess,'w+');
    fwrite($handle,$return);
    fclose($handle);
    return $filess;
}

the function will create INSERT INTO instructions in .sql file, which then can be used for import into newly created database.

Answer 2

I use PHP to create compressed MySQL dumps daily. If using PHP under Linux, a generic representation of what you need is:

exec('mysqldump -u [username] --password=[password] [databaseName] > [sqlDumpFilename] ');
exec('tar cvzf [compressedFilename] [sqlDumpFilename]');

This will result in [compressedFilename] containing a compressed MySQL dump to use as you need. Skip the compression step if not needed.