/**
* Perform the file backup.
*
* @return bool Whether the backup completed successfully or not.
*/
public function backup()
{
if (!Backup_Utilities::is_exec_available() || !$this->get_zip_executable_path()) {
return false;
}
// cd to the site root
$command[] = 'cd ' . escapeshellarg(Path::get_root());
// Run the zip command with the recursive and quiet flags
$command[] = '&& ' . escapeshellcmd($this->get_zip_executable_path()) . ' -rq';
// Save the zip file to the correct path
$command[] = escapeshellarg($this->get_backup_filepath()) . ' ./';
// Pass exclude rules in if we have them
if ($this->get_exclude_string()) {
$command[] = '-x ' . $this->get_exclude_string();
}
// Push all output to STDERR
$command[] = '2>&1';
$command = implode(' ', $command);
$output = $return_status = 0;
exec($command, $output, $return_status);
// Track any errors
if ($output) {
if ($return_status === 0) {
$this->warning(__CLASS__, implode(', ', $output));
} else {
$this->error(__CLASS__, implode(', ', $output));
}
}
return $this->verify_backup();
}
/**
* @return bool
*/
public static function test()
{
return Backup_Utilities::is_exec_available();
}