protected function Backup::prepareEnvironment

Prepare the PHP environment for performing a backup or restore.

File

core/includes/backup/backup.class.inc, line 362

Contains the Backup base class.

Class

Backup

Base class for creating backups.

Code

protected function prepareEnvironment() {
  // If not in 'safe mode', increase the maximum execution time.
  $backup_max_time = $this->settings['backup_max_time'];
  if (!ini_get('safe_mode') && strpos(ini_get('disable_functions'), 'set_time_limit') === FALSE && ini_get('max_execution_time') < $backup_max_time) {
    backdrop_set_time_limit($backup_max_time);
  }

  // Conditionally increase the memory limit.
  // Get the current PHP memory limit.
  $php_memory_limit = ini_get('memory_limit');

  // If the memory limit is set to -1, there's no need to do anything.
  if ($php_memory_limit != '-1') {
    // Convert the PHP memory limit to bytes.
    $php_memory_limit_bytes = parse_size($php_memory_limit);
    // Convert the instance settings memory limit to bytes.
    $backup_memory_limit_bytes = parse_size($this->settings['memory_limit']);

    // Increase the memory limit.
    if ($php_memory_limit_bytes < $backup_memory_limit_bytes) {
      // Ensure ini_set() is not disabled.
      if (!strpos(ini_get('disable_functions'), 'ini_set')) {
        // Convert bytes to megabytes, add the 'M' unit.
        $backup_memory_limit = round($backup_memory_limit_bytes / 1024 / 1024) . 'M';

        // Update the PHP memory limit.
        ini_set('memory_limit', $backup_memory_limit);
      }
    }
  }

  if ($this->settings['verbose']) {
    $this->log('Memory limit: %limit', array('%limit' => ini_get('memory_limit')), self::LOG_SUCCESS);
  }
}