使用pack 填充空白符 unpack解

Java代码  

<?php  
$book = array(array(&#39;Elmer Gantry&#39;, &#39;Sinclair Lewis&#39;, 1927),  
              array(&#39;The Scarlatti Inheritance&#39;, &#39;Robert Ludlum&#39;, &#39;1971&#39;),  
              array(&#39;The Parsifal Mosaic&#39;, &#39;William Styron&#39;, &#39;1979&#39;));  
$i = 0;  
foreach($book as $bookline){  
        $var[$i] = pack(&#39;A25A14A4&#39;, $bookline[0], $bookline[1], $bookline[2]);  
        $i++;  
}  
  
print_r ($var);  
  
for($i=0;$i<count($var); $i++){  
        $var[$i] = unpack(&#39;A25tit/A14aut/A4year&#39;, $var[$i]);  
}  
  
print_r ($var);  
echo $var[1][&#39;tit&#39;];  
?>