public function serializeLong(int $long = null)
    {
        if (null === $long) {
            // long on 8 bytes always
            $uint8 = array_merge($this->serializeInt(null), $this->serializeInt(0));
        }
        else {
            // prepend size on 4 bytes
            $uint64L = $this->serializeInt($long);
            $uint64H = $this->serializeInt($long >> 32);

            $uint8 = array_merge($uint64L, $uint64H);
            if (($len = count($uint8)) === 8) 
                // job done
                return $uint8;

            // right padding to 8 bytes
            for ($i = 0, $done = 8 - $len; $i < $done; $i++) {
                array_push($uint8, 0);
            }
        }

        return $uint8;
    }
public function serializeLong(int $long = null)
    {
        if (null === $long) {
            // long on 8 bytes always
            $uint8 = array_merge($this->serializeInt(null), $this->serializeInt(0));
        }
        else {
            // prepend size on 4 bytes
            $uint64L = $this->serializeInt($long);
            $uint64H = $this->serializeInt($long >> 32);

            $uint8 = array_merge($uint64L, $uint64H);
            if (($len = count($uint8)) === 8) 
                // job done
                return $uint8;

            // right padding to 8 bytes
            for ($i = 0, $done = 8 - $len; $i < $done; $i++) {
                array_push($uint8, 0);
            }
        }

        return $uint8;
    }
public function serializeLong ( int $ long = null ) { if ( null === $ long ) { // long on 8 bytes always $ uint8 = array_merge ( $ this -> serializeInt ( null ) , $ this -> serializeInt ( 0 ) ) ; } else { // prepend size on 4 bytes $ uint64L = $ this -> serializeInt ( $ long ) ; $ uint64H = $ this -> serializeInt ( $ long >> 32 ) ; $ uint8 = array_merge ( $ uint64L , $ uint64H ) ; if ( ( $ len = count ( $ uint8 ) ) === 8 ) // job done return $ uint8 ; // right padding to 8 bytes for ( $ i = 0 , $ done = 8 - $ len ; $ i < $ done ; $ i ++ ) { array_push ( $ uint8 , 0 ) ; } } return $ uint8 ; }
Serialize UInt64 numbers. This corresponds to the `long` variable type
in C.

@param   integer     $long
@return  array
Serialize UInt64 numbers . This corresponds to the long variable type in C .