PHP - Get duration from dates

This function takes array formats (month, day, year), sorry I never use dates like your example, so you will have to explode your date and change the month and days order to use the exmple function below...

<?

function date_range ( $sv, $ev )
{
      $data = array ( 'months' => 0, 'days' => array (), 'years' => 0 );

      if ( $sv[2] != $ev[2] )
      {
            for ( $i = $sv[0]; $i <= 12; $i++ )
            {
                  $at = gmmktime ( 0, 0, 0, $i, 1, $sv[2] );

                  if ( $i == $sv[0])
                  {
                        $sd = array ( gmdate ( 't', $at ), $sv[1] );
                  }
                  else
                  {
                        if ( ( $data['months'] + 1 ) == 12 )
                        {
                              $data['years'] += 1;
                              $data['months'] = 0;
                        }
                        else
                        {
                              $data['months'] += 1;
                        }
                  }
            }

            $ty = ( $sv[2] + 1 );

            while ( $ty != $ev[2] )
            {
                  $data['years'] += 1;

                  $ty += 1;
            }

            for ( $i = 1; $i <= $ev[0]; $i++ )
            {      
                  $at = gmmktime ( 0, 0, 0, $i, 1, $ev[2] );

                  if ( $i == $ev[0])
                  {
                        $ed = array ( gmdate ( 't', $at ), $ev[1] );
                  }
                  else
                  {
                        if ( ( $data['months'] + 1 ) == 12 )
                        {
                              $data['years'] += 1;
                              $data['months'] = 0;
                        }
                        else
                        {
                              $data['months'] += 1;
                        }
                  }
            }

            if ( $ed[1] > ( $sd[0] - $sd[1] ) )
            {
                  if ( ( $data['months'] + 1 ) == 12 )
                  {
                        $data['years'] += 1;
                        $data['months'] = 0;
                  }
                  else
                  {
                        $data['months'] += 1;
                  }

                  $data['days'] = ( $ed[1] - ( $sd[0] - $sd[1] ) );
            }
            else
            {
                  $data['days'] = ( ( $sd[0] - $sd[1] ) + $ed[1] );
            }
      }
      else
      {
            if ( $sv[0] == $ev[0] )
            {
                  $data['days'] = ( $ev[1] - $sv[1] );
            }
            else
            {
                  for ( $i = $sv[0]; $i <= $ev[0]; $i++ )
                  {
                        $at = gmmktime ( 0, 0, 0, $i, 1, $sv[2] );

                        if ( $i == $sv[0])
                        {
                              $sd = array ( gmdate ( 't', $at ), $sv[1] );
                        }
                        else if ( $i == $ev[0])
                        {
                              $ed = array ( gmdate ( 't', $at ), $ev[1] );
                        }
                        else
                        {
                              if ( ( $data['months'] + 1 ) == 12 )
                              {
                                    $data['years'] += 1;
                                    $data['months'] = 0;
                              }
                              else
                              {
                                    $data['months'] += 1;
                              }
                        }
                  }

                  if ( $ed[1] > ( $sd[0] - $sd[1] ) )
                  {
                        if ( ( $data['months'] + 1 ) == 12 )
                        {
                              $data['years'] += 1;
                              $data['months'] = 0;
                        }
                        else
                        {
                              $data['months'] += 1;
                        }

                        $data['days'] = ( $ed[1] - ( $sd[0] - $sd[1] ) );
                  }
                  else
                  {
                        $data['days'] = ( ( $sd[0] - $sd[1] ) + $ed[1] );
                  }
            }
      }

      return ( $data );
}

// usage

// start must be older than end (if not reverse them)

$one = '29.12.2004';
$two = '29.12.2006';

$one = explode ( '.', $one );
$two = explode ( '.', $two );

// function expects array arguments => (month, day, year), not => (day, month, year)

$out = date_range ( array ( $one[1], $one[0], $one[2] ), array ( $two[1], $two[0], $two[2] ) );

print_r ( $out );

?>


ms!