<?php
$dbhost = 'localhost:3036';
$dbuser = 'dbuser';
$dbpass = 'dbpassword';

$backup_file = $dbname . date("Y-m-d-H-i-s") . '.gz';

$command = "mysqldump --opt -h $dbhost -u $dbuser -p $dbpass ". "yourdb | gzip > $backup_file";

exec($command);

?>