Paginate list of files in php

Question

I have php code for list all ".swf" files in a folder. (The name of the files is always: "99-dd-mm-YY_HH-mm-ss.swf", example: "01-19-06-2011_18-40-00.swf". When I have more than 500 files in the folder is complicated to see and to refresh the page.

I need paginate the list of files.

<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>

You need to paginate a list of files and.. something doesn't work? What exactly is the problem. Does it give an error? — Tessmore, Nov 20 '11 at 20:22

score 1 · Answer 1 · edited Oct 20 '12 at 19:00

1

When required to go through lots of folders and files, try the Iterator object. A nice example:

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

This will get all the file names (if you have php 5.3 or higher) very fast and will do the if dir_exists / file_exists for you! The array_slice so it removes the . and .. directory.

edited Oct 20 '12 at 19:00

hakre

193,403
52
435
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answered Nov 20 '11 at 20:24

Tessmore

1,054
1
9
23

Very nice! Did not know about that function :-) – Tessmore Oct 21 '12 at 14:32

score 0 · Answer 2 · edited May 23 '17 at 11:53

Like @Tessmore said, Spl Iterators are teh awesomesauce. According to the docs, you only need PHP > 5.1 for the basic iterators.

Cross-posting an example --

DirectoryIterator and LimitIterator are my new best friends, although glob seems to prefilter more easily. You could also write a custom FilterIterator. Needs PHP > 5.1, I think.

No prefilter:

$dir_iterator = new DirectoryIterator($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);

Then, do your thing:

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

Note that in the case of the DirectoryIterator example, $file will be an instance of SplFileInfo, whereas glob example is just the disk path.

score 0 · Accepted Answer · answered Nov 26 '11 at 17:11

I used this code for simple pagination

<?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;
}
}
?>

Here there is pagination class and the example for download: http://lotsofcode.com/php/php-array-pagination.htm

Thanks for all!

Paginate list of files in php

3 Answers3

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