/**
* Recursevely detects differences of multidimensional arrays
* and returns a new array containing all differences. Indexes that exists in both arrays are skipped.
* (e.g. used to detect differences between the complete SESSION['log'] and the built log of a page-call
* in ajax-functions to only return the last changes to the client)
*
* @param array $array1 Array1
* @param array $array2 Array2
*
* @return array Array with differences
*/
function getArrayDiffAssocRecursive($array1, $array2)
{
foreach ($array1 as $key => $value) {
if (is_array($value)) {
if (!isset($array2[$key])) {
$difference[$key] = $value;
} elseif (!is_array($array2[$key])) {
$difference[$key] = $value;
} else {
$new_diff = getArrayDiffAssocRecursive($value, $array2[$key]);
if ($new_diff != FALSE) {
$difference[$key] = $new_diff;
}
}
} elseif (!isset($array2[$key]) || $array2[$key] != $value) {
$difference[$key] = $value;
}
}
return !isset($difference) ? 0 : $difference;
}
// calculate the estimated time from it
// if we restore a backup from another program we need to rely on the filesize
//which is not accurate
// when the file is gzipped, but we can't help it because there is no way to
// get the exact file pointer position in a gzipped file.
// So we give our best to guess the corect position (see line 117 above)
if ($restore['progress_overall_percent'] > 0) {
$percentageDone = $restore['progress_overall_percent'];
} else {
$percentageDone = $restore['progress_file_percent'];
}
$estimatedTime = 0;
if ($percentageDone > 0) {
$estimatedTime = (100 - $percentageDone) * ($elapsed / $percentageDone);
$r['estimated_end'] = getTimeFormat($estimatedTime);
} else {
$r['estimated_end'] = $lang['L_UNKNOWN'];
}
// check if new log-messages have been added
$messages = getArrayDiffAssocRecursive($_SESSION['log'], $_SESSION['temp_log']);
if (isset($messages['actions']) && is_array($messages['actions'])) {
$r['actions'] = implode('<br />', $messages['actions']);
}
if (isset($messages['errors']) && is_array($messages['errors'])) {
$r['errors'] = implode('<br />', $messages['errors']);
}
$_SESSION['log'] = $_SESSION['log'] + $_SESSION['temp_log'];
// save actual values to session
$_SESSION['restore'] = $restore;
echo $json->encode($r);
obend(true);
