Zend/Cache/Backend/File.php:803

if ((is_dir($file)) and ($this->_options['hashed_directory_level']>0)) {
     // Recursive call
     $result = array_unique(array_merge($result, $this->_get($file . DIRECTORY_SEPARATOR, $mode, $tags)));
}

If the directory $file is empty then this:

line 741

if ($glob === false) {
     return true;
}

will return true and

line 808

return array_unique($result);

will turn it to false (true or false does not matter) - problem is that this is NOT an array.

So next "array_merge()" will start a cascade of errors for each recursive call.

Warning: array_merge() [function.array-merge]: Argument #2 is not an array in /var/www/libraries/ZendFramework-1.10.0-minimal/library/Zend/Cache/Backend/File.php on line 805

Maybe there is a better solution, but this seems to work fine for me:

line 803

if ((is_dir($file)) and ($this->_options['hashed_directory_level']>0)) {
    // Recursive call
    $tmp_result = $this->_get($file . DIRECTORY_SEPARATOR, $mode, $tags);
    if (is_array($tmp_result)) {
        $result = array_unique(array_merge($result, $tmp_result));
    }
}

Best regards, Anton

Anton Stöckl as@pixeltalents.com http://www.pixeltalents.com