Sort by date

[lahtihoo]

I have a text database:
base.txt:
1#122.00#31.02.2005
2#158.50#16.12.2005

and code displaying the items:

  

$lines = file(base.txt); 
   foreach ($lines as $rivit) { 
    $dat = explode("#", $rivit); 
                echo "Order: $dat[0], Prize: $dat[1], Date: $dat[2]<br>\n"; 
  }

Now my problem is how to sort the orders by date?

Thanks in advance!

[Installer]

$lines = file('base.txt');  

foreach ($lines as $value) {  

    $dat = explode('#', trim($value));
    $arr = explode('.', $dat[2]);
    $tmp[] = implode('', array_reverse($arr));  

}
array_multisort($tmp, SORT_ASC, $lines);
foreach ($lines as $rivit) {
    $dat = explode('#', trim($rivit));
    echo "Order: $dat[0], Prize: $dat[1], Date: $dat[2]<br>\n";  

}