A minor issue while iteration of array in php.Guidance please - php

Question

I have several files in a directory.I want to display all those filenames with the extension .txt and .jpeg
<?php
if ($handle = opendir("/home/work/collections/utils/")) {
while (false !== ($file = readdir($handle))) {
if ($file == '.' || $file == '..') {
continue;
}
$actual_file=pathinfo("/etrade/home/collections/utils");
if (($actual_file["extension"]== "txt") ||
($actual_file["extension"]== "jpg") ||
($actual_file["extension"]== "pdf")) {
//Require changes here.Dont know how to iterate and get the list of files
echo "<td>"."\n"." $actual_file['basename']."</a></td>";
}
}
closedir($handle);
}
Please help me on how to iterate and get the list of files .For instance I want all files with jpg extension in a seperate column and pdf files in a seperate column(since I am going to display in a table)

Answer 1

See if this does what you want (EDITED):
<?php
$ignoreFiles = array('.','..'); // Items to ignore in the directory
$allowedExtensions = array('txt','jpg','pdf'); // File extensions to display
$files = array();
$max = 0;
if ($handle = opendir("/home/work/collections/utils/")) {
while (false !== ($file = readdir($handle))) {
if (in_array($file, $ignoreFiles)) {
continue; // Skip items to ignore
}
// A simple(ish) way of getting a files extension
$extension = strtolower(array_pop($exploded = explode('.',$file)));
if (in_array($extension, $allowedExtensions)) { // Check if file extension is in allow list
$files[$extension][] = $file; // Create an array of each file type
if (count($files[$extension]) > $max) $max = count($files[$extension]); // Store the maximum column length
}
}
closedir($handle);
}
// Start the table
echo "<table>\n";
// Column headers
echo " <tr>\n";
foreach ($files as $extension => $data) {
echo " <th>$extension</th>\n";
}
echo " </tr>\n";
// Table data
for ($i = 0; $i < $max; $i++) {
echo " <tr>\n";
foreach ($files as $data) {
if (isset($data[$i])) {
echo " <td>$data[$i]</td>\n";
} else {
echo " <td />\n";
}
}
echo " </tr>\n";
}
// End the table
echo "</table>";

Answer 2

If you just want to display two lists of files (it's not clear what part you're having trouble with from your question) can't you just store the filenames in an array?
You don't seem to be getting the file details - you're getting the pathinfo for /etrade/home/collections/utils, but you never add the file name to it.
<?php
if ($handle = opendir("/home/work/collections/utils/")) {
while (false !== ($file = readdir($handle))) {
if ($file == '.' || $file == '..') {
continue;
}
$actual_file=pathinfo($file);
switch ($actual_file['extension'])
{
case ('jpg'):
$jpegfiles[] = $actual_file;
break;
case ('pdf'):
$pdffiles[] = $actual_file;
break;
}
}
closedir($handle);
}
echo "JPG files:"
foreach($jpegfiles as $file)
{
echo $file['basename'];
}
echo "PDF Files:"
foreach($pdffiles as $file)
{
echo $file['basename'];
}
?>
Obviously you can be cleverer with the arrays, and have use multi-dimensional arrays and do away with the switch if you want.