public function readDouble($isCollectionElement = false) {
		if ($isCollectionElement) {
				$this->readShort();
		}
		return unpack('d', strrev($this->read(8)))[1];
	}
public function readDouble($isCollectionElement = false) {
		if ($isCollectionElement) {
				$this->readShort();
		}
		return unpack('d', strrev($this->read(8)))[1];
	}
public function readDouble ( $ isCollectionElement = false ) { if ( $ isCollectionElement ) { $ this -> readShort ( ) ; } return unpack ( 'd' , strrev ( $ this -> read ( 8 ) ) ) [ 1 ] ; }
Read double.

@param bool $isCollectionElement
@return double
Read double .