Question

我有php代码列出文件夹中的所有“.swf”文件。（文件的名称始终是： “99-dd-mm-YY_HH-mm-ss.swf”，例如：“01-19-06-2011_18-40-00.swf”。当我在文件夹中有超过500个文件时，很难看到并刷新页面。

我需要对文件列表进行分页。

<html>
<head>
<meta content="text/html; charset=UTF-8" http-equiv="content-type">
<title></title>
<script type="text/javascript">
function submitform()
{    
  document.myform.submit();
}
</script>
</head>
<body>
<form name="myform" action="some.php" method="post">
<?php
   echo "\n<br>\n";


echo "<a href='javascript:this.location.reload();' style='color: #000000; font-weight: normal'>Refresh</a></br>";
   echo "<tr>\n<td>\n<a href='javascript:javascript:history.go(-1)'>\n";
   echo "<img src='../../inc/img/back.png' alt='Back'";
   echo " border=0>\n";
   echo "<b>&nbsp;Back</b></a></td>\n";
   echo "\n</tr>\n";
   echo "\n<br>\n\n<br>\n";
$folder='.';
function order($a,$b){
global $folder;
$directory='.';
return strcmp(strtolower($a), strtolower($b));
}
$folder=opendir($folder);
while($files=readdir($folder)){

$ext = pathinfo($files, PATHINFO_EXTENSION);
if ($ext == 'swf')  {  //con esta línea saco el nombre index.php del listado
$file[]=$files;
usort($file, "order");
}
}
$n = 0;
foreach($file as $archiv){
   $n = $n + 1;
   $day = substr($archiv, 3,10);
   $day = str_replace("-","/", $day);
   $hour = substr($archiv, 14,8);
   $hour = str_replace("-",":", $hour);
   echo "<img alt='Ver $archiv' src='../../inc/img/video.png'> Video $n, Día: $day, hour: $hour\n ";
   echo "<input type='submit' name='xxx' value='$archiv'></td>\n";
   echo "\n</tr>\n";
   echo "<br>";
}
closedir($folder);
   echo "\n<br>\n";
   echo "<tr>\n<td>\n<a href='javascript:javascript:history.go(-1)'>\n";
   echo "<img src='../../inc/img/back.png' alt='Back'";
   echo " border=0>\n";
   echo "<b>&nbsp;Back</b></a></td>\n";
   echo "\n</tr>\n";
?>
</form>
</body>
</html>

Answer 1

当需要浏览大量文件夹和文件时，请尝试Iterator对象。一个很好的例子：

function get_files($dir)
{
  $dir  = new DirectoryIterator($dir);
  $list = iterator_to_array($dir, false);
  return array_slice($list, 2);
}

这将获得所有文件名（如果您有php 5.3或更高版本）非常快，并将为您执行if dir_exists / file_exists！ array_slice所以它删除了。和..目录。

Answer 2

我使用此代码进行简单分页

<?php
// Include the pagination class
include 'pagination.class.php';
// Create the pagination object
$pagination = new pagination;

// some example data
foreach (range(1, 100) as $value) {
$products[] = array(
'Product' => 'Product '.$value,
'Price' => rand(100, 1000),
);
}

// If we have an array with items
if (count($products)) {
// Parse through the pagination class
$productPages = $pagination->generate($products, 20);
// If we have items
if (count($productPages) != 0) {
// Create the page numbers
echo $pageNumbers = '<div>'.$pagination->links().'</div>';
// Loop through all the items in the array
foreach ($productPages as $productID => $productArray) {
// Show the information about the item
echo '<p><b>'.$productArray['Product'].'</b> 243'.$productArray['Price'].'</p>';
}
// print out the page numbers beneath the results
echo $pageNumbers;
}
}
?>

这里有分页类和下载示例： http://lotsofcode.com/php/php-array-pagination.htm

谢谢大家！

Answer 3

Like @Tessmore said，Spl Iterators teh awesomesauce 。根据{{3}}，您只需要PHP＆gt; 5.1用于基本迭代器。

the docs -

Cross-posting an example和DirectoryIterator是我最好的朋友，虽然glob似乎更容易预先过滤。您还可以编写自定义LimitIterator。需要PHP＆gt; 5.1，我想。

没有前置过滤器：

$dir_iterator = new DirectoryIterator($dir);
$paginated = new LimitIterator($dir_iterator, $page * $perpage, $perpage);

Glob prefilter：

$dir_glob = $dir . '/*.{jpg,gif,png}';

$dir_iterator = new ArrayObject(glob($dir_glob, GLOB_BRACE));
$dir_iterator = $dir_iterator->getIterator();
$paginated = new LimitIterator($dir_iterator, $page * $perpage, $perpage);

那么，做你的事：

foreach ($paginated as $file) { ... }

请注意，对于DirectoryIterator示例，$file将是FilterIterator的实例，而glob示例只是磁盘路径。

在php中分页文件列表

3 个答案: