Lines Matching defs:block

579      * @param string $block a 512 byte block containing the header data
580      * @return array|false returns false when this was a null block
583     protected function parseHeader($block)
585         if (!$block || strlen($block) != 512) {
590         if(trim($block) === '') return false;
593             $chks += ord($block[$i]);
597             $chks += ord($block[$i]);
602             $block
631             // following data block(s) is the filename
633             // next block is the real header
634             $block  = $this->readbytes(512);
635             $return = $this->parseHeader($block);