Swift_ByteStream_FileByteStream::read PHP 메소드

    public function read($length)
    {
        $fp = $this->_getReadHandle();
        if (!feof($fp)) {
            if ($this->_quotes) {
                ini_set('magic_quotes_runtime', 0);
            }
            $bytes = fread($fp, $length);
            if ($this->_quotes) {
                ini_set('magic_quotes_runtime', 1);
            }
            $this->_offset = ftell($fp);
            // If we read one byte after reaching the end of the file
            // feof() will return false and an empty string is returned
            if ($bytes === '' && feof($fp)) {
                $this->_resetReadHandle();
                return false;
            }
            return $bytes;
        }
        $this->_resetReadHandle();
        return false;
    }

 /**
  * @test
  * @expectedException \Swift_IoException
  */
 public function shouldThrowExceptionOnConsecutiveRead()
 {
     $fbs = new \Swift_ByteStream_FileByteStream('does not exist');
     try {
         $fbs->read(100);
     } catch (\Swift_IoException $exc) {
         $fbs->read(100);
     }
 }