php ziparchive renamed file is empty

I'm using php to create a ziparchive which contains some images. This works fine exept when i try to rename the files. This is the code that works:

$zip_archive->open(tempnam("tmp", "zip"), ZipArchive::OVERWRITE);
foreach ($images as $image) {
  $path = $image['path'];
  $title = $image['title'];
  if(file_exists($path)){
    $zip_file->addFile($path, pathinfo($path, PATHINFO_BASENAME));
  }
}
$zip_archive->close();

$images is an array and could look like this:

$images = array(
    'path' => array(
        'folder/title1.jpg',
        'folder/title2.jpg'
    ),
    'title' => array(
        'new_name1.jpg',
        'new_name2.jpg'
    )
)

I would like to name the image as its title.

$zip_file->addFile($path, $title);

But whats happening is that the files in the zip with the title as name are empty. What am I doing wrong?

Solution

If I run this

$images = array(
    'path' => array(
        'folder/title1.jpg',
        'folder/title2.jpg'
    ),
    'title' => array(
        'new_name1.jpg',
        'new_name2.jpg'
    )
);

$i = 0;
foreach($images as $image)
    var_dump($image, $i++);

I get

array(2) {
  [0]=>
  string(17) "folder/title1.jpg"
  [1]=>
  string(17) "folder/title2.jpg"
}
int(0)
array(2) {
  [0]=>
  string(13) "new_name1.jpg"
  [1]=>
  string(13) "new_name2.jpg"
}
int(1)

This means that these

$path = $image['path'];
$title = $image['title'];

are both NULL

You have two ways to fix this:

Change the array to look like

$images = array(
    [0] => array(
        'path' => 'folder/title1.jpg',
        'title' => 'new_name1.jpg'
    ),
    [1] => array(
        'path' => 'folder/title2.jpg'
        'title' => 'new_name2.jpg',
    )
);

in this case your initial code should work

Change the way to access the array, doing something like
```
for($i = 0;$i < count($images['path']);$i++)
{
    $path = $image['path'][$i];
    $title = $image['title'][$i];
}
```
This way you are sure that path and title of the image will have the same index, but it's not recommanded to do so because the array must be ordered.

I suggest you to change the array, your code should be ok that way