auto display filename in a directory and auto fill it as value

Question

Hi Guys,

I want something (final) like this :

<?php
//named as config.php
$fn[0]["long"] = "file name";   $fn[0]["short"] = "file-name.txt";  
$fn[1]["long"] = "file name 1"; $fn[1]["short"] = "file-name_1.txt";
?>

What that I want to?:

1. $fn[0], $fn[1], etc.., as auto increasing
2. "file-name.txt", "file-name_1.txt", etc.., as file name from a directory, i want it auto insert.
3. "file name", "file name 1", etc.., is auto split from "file-name.txt", "file-name_1.txt", etc..,

and config.php above needed in another file e.g.

<? //named as form.php
include "config.php";
for($tint = 0;isset($text_index[$tint]);$tint++)
{
if($allok === TRUE && $tint === $index) echo("<option VALUE=\"" . $text_index[$tint]["short"] . "\" SELECTED>" . $text_index[$tint]["long"] . "</option>\n");
else echo("<option VALUE=\"" . $text_index[$tint]["short"] . "\">" . $text_index[$tint]["long"] . "</option>\n");
} ?>

so i try to search and put php code and hope it can handling at all : e.g.

<?php
$path = ".";
$dh = opendir($path);
//$i=0; 
$i= 1;
while (($file = readdir($dh)) !== false) {
if($file != "." && $file != "..") {
echo "\$fn[$i]['short'] = '$file'; $fn[$i]['long'] = '$file(splited)';<br />"; // Test 
       $i++;
}
}
closedir($dh);
?>

but i'm wrong, the output is not similar to what i want, e.g.

$fn[0]['short'] = 'file-name.txt'; ['long'] = 'file-name.txt'; //<--not splitted
$fn[1]['short'] = 'file-name_1.txt'; ['long'] = 'file-name_1.txt'; //<--not splitted

because i am little known with php so i don't know how to improve code more, there are any good tips of you guys could help me, Please

Answer 1

Use this as the if condition to avoid the '..' from appearing in the result.

if($file != "." && $file != "..")

Answer 2

Change

if($file != "." ) {

to

if($file != "." and $file !== "..") {

and you get the behaviour you want.

If you read all the files from a linux environment you always get . and .. as files, which represent the current directory (.) and the parent directory (..). In your code you only ignore '.', while you also want to ignore '..'.

Edit: If you want to print out what you wrote change the code in the inner loop to this:

if($file != "." ) {
  echo "\$fn[\$i]['long'] = '$file'<br />"; // Test
    $i++;
}

If you want to fill an array called $fn:

if($file != "." ) {
  $fn[]['long'] = $file;
}

(You can remove the $i, because php auto increments arrays). Make sure you initialize $fn before the while loop: $fn = array();

Answer 3

I've had the same thing happen. I've just used array_shift() to trim off the top of the array check out the documentation. http://ca.php.net/manual/en/function.array-shift.php

Answer 4

Have a look at the following functions:

• glob — Find pathnames matching a pattern
• scandir — List files and directories inside the specified path
• DirectoryIterator — provides a simple interface for viewing the contents of filesystem directories

So, with the DirectoryIterator you simply would do:

$dir = new DirectoryIterator('.');
foreach($dir as $item) {
    if($item->isFile()) {
        echo $file;
    }
} 

Notice how every $item in $dir is an SplFileInfo instance and provides access to a number of useful other functions, e.g. isFile().

Doing a recursive directory traversal is equally easy. Just use a RecursiveDirectoryIterator with a RecursiveIteratorIterator and do:

$dir = new RecursiveIteratorIterator(new RecursiveDirectoryIterator('.'));
foreach($dir as $item) {
    echo $file;
}

NOTE I am afraid I do not understand what the following line from your question is supposed to mean:

echo "$fn[$i]['long'] = '$file'<br />"; // Test

But with the functions and example code given above, you should be able to do everything you ever wanted to do with files inside directories.

Answer 5

New answer after OP edited his question

From your edited question, I understand you want to dynamically populate a SelectBox element on an HTML webpage with the files found in a certain directory for option value. The values are supposed to be split by dash, underscore and number to provide the option name, e.g.

Directory with Files    >    SelectBox Options
filename1.txt           >    value: filename1.txt, text: Filename 1
file_name2.txt          >    value: filename1.txt, text: File Name 2
file-name3.txt          >    value: filename1.txt, text: File Name 3

Based from the code I gave in my other answer, you could achieve this with the DirectoryIterator like this:

$config = array();
$dir    = new DirectoryIterator('.');
foreach($dir as $item) {
    if($item->isFile()) {
        $fileName = $item->getFilename();
        // turn dashes and underscores to spaces
        $longFileName = str_replace(array('-', '_'), ' ', $fileName);
        // prefix numbers with space
        $longFileName = preg_replace('/(\d+)/', ' $1', $fileName);
        // add to array
        $config[] = array('short' => $filename,
                          'long'  => $longFilename);
    }
} 

However, since filenames in a directory are unique, you could also use this as an array:

$config[$filename] => $longFilename;

when building the config array. The short filename will form the key of the array then and then you can build your selectbox like this:

foreach($config as $short => $long)
{
    printf( '<option value="%s">%s</option>' , $short, $long);
}

Alternatively, use the Iterator to just create an array of filenames and do the conversion to long file names when creating the Selectbox options, e.g. in the foreach loop above. In fact, you could build the entire SelectBox right from the iterator instead of building the array first, e.g.

$dir = new DirectoryIterator('.');
foreach($dir as $item) {
    if($item->isFile()) {
        $fileName = $item->getFilename();
        $longFileName = str_replace(array('-', '_'), ' ', $fileName);
        $longFileName = preg_replace('/(\d+)/', ' $1', $fileName);
        printf( '<option value="%s">%s</option>' , $fileName, $longFileName);
    }
} 

Hope that's what your're looking for. I strongly suggest having a look at the chapter titled Language Reference in the PHP Manual if you got no or very little experience with PHP so far. There is also a free online book at http://www.tuxradar.com/practicalphp