Question

I’m trying to retrieve folders name from a zip file.
I wrote this simple function :

<?php
class zipadmin{
    private $filename ;
    private $folder ;
    public function __construct($filename,$folder){
        $this->zip = new ZipArchive;
        $this->file = $filename ;
        $this->folder = $folder ;
    }
    public function listzip(){
    if ($this->zip->open($this->file) == TRUE) {
        $info = $this->zip->statIndex(0);
        $output = str_replace('/','',$info['name']);
        return $output;
        }
    }
}

Problem that if the zip folder contain other files which is not included inside the folders it return all the files names.
I need it to return folders names only and discard any files name.

Answer 1

You can try to check when $info['crc'] equals to zero.

class zipadmin{

  private $file;
  private $folder;
  private $zip;

  public function __construct($filename, $folder) {
    $this->zip = new ZipArchive;
    $this->file = $filename ;
    $this->folder = $folder ;
    }

  public function listzip() {
    $res = false;
    if ($this->zip->open($this->folder . $this->file) == TRUE) {
      $i = 0;
      while ($info = $this->zip->statIndex($i)) {
        if ($info['crc'] == 0 && preg_match('#^[^/]*?/$#', $info['name']))
          $res[] = preg_replace('#^([^/]*?)/$#', '$1', $info['name']);
        $i++;
        }
      }
    return $res;
    }

}

Usage example:

$z = new zipadmin('test.zip', './'); // test.zip in my example is in same folder
print_r($z->listzip());

Output (array of root-directories only):

Array
(
    [0] => folder1
    [1] => folder2
    [2] => folder3
    [3] => folder4
)

In my test.zip archive I have few files in root directory of archive and 4 directories folder1, folder2, folder3 and folder4with some files and sub-directories inside them. Running method against archive with no folders returns boolean false.

Update:

• Fixed regex pattern to match everything before first slash /.