dynamic formation of array with incremental depth in PHP - php

Question

I want to use a function to recursively scan a folder, and assign the contents of each scan to an array.
It's simple enough to recurse through each successive index in the array using either next() or foreach - but how to dynamically add a layer of depth to the array (without hard coding it into the function) is giving me problems. Here's some pseudo:
function myScanner($start){
static $files = array();
$files = scandir($start);
//do some filtering here to omit unwanted types
$next = next($files);
//recurse scan
//PROBLEM: how to increment position in array to store results
//$next_position = $files[][][].... ad infinitum
//myScanner($start.DIRECTORY_SEPARATOR.$next);
}
any ideas?

Answer 1

Try something like this:
// $array is a pointer to your array
// $start is a directory to start the scan
function myScanner($start, &$array){
// opening $start directory handle
$handle = opendir($start);
// now we try to read the directory contents
while (false !== ($file = readdir($handle))) {
// filtering . and .. "folders"
if ($file != "." && $file != "..") {
// a variable to test if this file is a directory
$dirtest = $start . DIRECTORY_SEPARATOR . $file;
// check it
if (is_dir($dirtest)) {
// if it is the directory then run the function again
// DIRECTORY_SEPARATOR here to not mix files and directories with the same name
myScanner($dirtest, $array[$file . DIRECTORY_SEPARATOR]);
} else {
// else we just add this file to an array
$array[$file] = '';
}
}
}
// closing directory handle
closedir($handle);
}
// test it
$mytree = array();
myScanner('/var/www', $mytree);
print "<pre>";
print_r($mytree);
print "</pre>";

Answer 2

Try to use this function (and edit it for your demands):
function getDirTree($dir,$p=true) {
$d = dir($dir);$x=array();
while (false !== ($r = $d->read())) {
if($r!="."&&$r!=".."&&(($p==false&&is_dir($dir.$r))||$p==true)) {
$x[$r] = (is_dir($dir.$r)?array():(is_file($dir.$r)?true:false));
}
}
foreach ($x as $key => $value) {
if (is_dir($dir.$key."/")) {
$x[$key] = getDirTree($dir.$key."/",$p);
}
}
ksort($x);
return $x;
}
It returns sorted array of directories.