PHP sorting by date not working What could be wrong?

Question

PHP

Всем привет. Не могу отсортировать массив по дате. Дата - это дата создания файла. Помогите кто может, уже все интернеты облазил.

function array_sort_by_column($array, $column, $direction = SORT_ASC) {
$reference_array = array();
$i = 0;

foreach($array as $key => $row) {
$reference_array[$key] = $array[$column][$i];
$i++;
}

array_multisort($reference_array, $direction, $array);

return $array;
}

$array:

functions.php 43.30K 2014-09-29 09:42:21
wpdb_vooq.sql 479.09K 2014-09-29 11:31:23
simple-cart-buy-now(1).zip 149.48K 2014-09-29 09:43:00
jdk-8u20-linux-i586.tar.gz 154.87M 2014-09-29 10:36:40
isotope-master.zip 75.71K 2014-09-29 09:42:26
userinfo.php 14.96K 2014-09-29 09:48:02
default (1).php 13.96K 2014-09-29 11:04:38
yii-master.zip 10.38M 2014-09-29 11:31:38
gamma(1).rar 1.01M 2014-09-29 09:42:39
auremo_w_catalog_yii_rating.sql 1.53K 2014-09-29 09:45:56
boxes.pptx 38.14K 2014-09-29 09:42:34

$data['date'][] = date("Y-m-d H:i:s", filectime($dir.SEP.$value));

code that returns a list of files:

function treeList($dir = "") {
  $i = 0;
  if (is_dir($dir)) {
     if ($dh = opendir($dir)) {
         while (($file = readdir($dh)) !== false) {
         	if (!is_dir($file)){
             $data['file'][] = $file;
         	}
         }
         foreach ($data['file'] as $key => $value) {
         	$data['size'][] = human_filesize(filesize($dir.SEP.$value));
         	$data['date'][] = date("Y-m-d H:i:s", filectime($dir.SEP.$value));
         }
         closedir($dh);
     }
    array_sort_by_column($data, 'date');
  }

  return $data;
  }

Updated
the first three files when I load everything sorts the rules, and then in general in an incomprehensible order it displays
Updated 2
Undefined index: date in

function cmp($a, $b)
{
  $t1 = strtotime($a["date"]);
  $t2 = strtotime($b["date"]);

    return ($t2<$t1) ? -1 : 1;
}

Answer 1

It's kind of complicated for you.
1) why translate a number convenient for sorting into a string?
2) why not use usort/uasort?

$files = ['some.txt']; // например через glob получаем список файлов
$cTimes = array_map(function ($file) {
    return filectime($file);
}, $files);
$data = array_combine($files, $cTimes);
uasort($data, function ($a, $b) {
    return $a - $b;
});
$sortedFiles = array_keys($data);

Answer 2

Maybe for reliability the date should be translated into timestamp and then sorted by it?

Answer 3

If you do not send the result of the function execution to the forefathers, then everything will probably be sorted.