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[0] in function chmod in /var/www/hopeinstoughton_www/wp-content/plugins/simple-universal-google-analytics/main.php on line 8
[1] in function include_once in /var/www/hopeinstoughton_www/wp-settings.php on line 560
[2] in function require_once in /var/www/hopeinstoughton_www/wp-config.php on line 85
[3] in function require_once in /var/www/hopeinstoughton_www/wp-load.php on line 50
[4] in function require_once in /var/www/hopeinstoughton_www/wp-blog-header.php on line 13
[5] in function require in /var/www/hopeinstoughton_www/index.php on line 17

<?php

class pages_history extends Database_model {
	protected $tablename = 'pages_history';

	public function __construct() {
		parent::__construct();
	}
	
	public function LoadPreview($ph_id) {
		$sql = <<<BLOCK
select pages_history.*, u_username as __username 
  from pages_history 
	left join user on pg_owner=u_id
where ph_id=%d and ph_ispreview=1
BLOCK;
		$data = $this->Lookup($sql, $ph_id);
		$this->DbErr();
		$ok = !empty($data['__existing']);
		if ($ok && !empty($data['pg_extra'])) {
			$data['__extra'] = unserialize($data['pg_extra']);
		} else {
			$data['__extra'] = [];
		}

		return $data;
	}

	private function GetPreviewAuth($data) {
		$auth = md5($data['ph_timestamp'] . ':' . $data['pg_title'] . ':' . $data['ph_id']);
		return $auth;
	}
	
	public function SaveHistory($old) {		// always create new record
		$data = new \Database_record($this);
		$data->empty(TRUE);
		foreach($old as $key => $value) {
			$data->$key = $value;
		}
		$data->ph_timestamp = gmdate('Y-m-d H:i:s');
		$data->ph_ispreview = 0;
		$data->saveRecord();
	}
	
	public function SavePreview($new) {
		$cutoff = date('Y-m-d H:i:s', time() - 7 * 86400);
		$sql = 'delete from pages_history where ph_ispreview=1 and ph_timestamp<%s';
		$this->Execute($sql, $cutoff);

		$data = $new;
		$data['__table'] = 'pages_history';
		$data['__existing'] = 0;
		$data['ph_timestamp'] = gmdate('Y-m-d H:i:s');
		$data['ph_ispreview'] = 1;
		$data->autoinc('ph_id')->SaveRecord();
		return $data['ph_id'];
	}
	
}