PHP - Serialize floating points

Question

I am generating 10 random floats between 6 and 8 (all for good reason), and writing them to a mysql database in a serialized form. But one quirk seems to emerge at the stora

Answer 1

Here's my take on Gumbo's answer. I put IteratorAggregate on there so it would be foreach-able, but you could add Countable and ArrayAccess also.

factor = $factor;
    $this->store = $data;
  }

  public function __sleep()
  {
    array_walk( $this->store, array( $this, 'toSerialized' ) );
    return array( 'factor', 'store' );
  }

  public function __wakeup()
  {
    array_walk( $this->store, array( $this, 'fromSerialized' ) );
  }

  protected function toSerialized( &$num )
  {
    $num *= $this->factor;
  }

  protected function fromSerialized( &$num )
  {
    $num /= $this->factor;
  }

  public function getIterator()
  {
    return new ArrayIterator( $this->store );
  }
}

function random_float ($min,$max) {
   return ($min+lcg_value()*(abs($max-$min)));
}

$original = array();
for ( $i = 0; $i < 10; $i++ )
{
  $original[] = round( random_float( 6, 8 ), 1 );
}

$stored = new FloatStorage( $original );

$serialized = serialize( $stored );
$unserialized = unserialize( $serialized );

echo '
';
print_r( $original );
print_r( $serialized );
print_r( $unserialized );
echo '
';