functions.php

国外非常不错的论坛

			'+5.5' => '+5:30',
			'+6' => '+6:00',
			'+7' => '+7:00',
			'+8' => '+8:00',
			'+9' => '+9:00',
			'+9.5' => '+9:30',
			'+10' => '+10:00',
			'+11' => '+11:00',
			'+12' => '+12:00',
		);
		
		if ( $action == 'get_zones' ) {
			
			return $timezones;
			
		} elseif ( $action == 'check_existance' ) {
			
			if ( !empty($timezones[$param]) )
				return true;
			else
				return false;
			
		}
		
	}

	//
	// Make a user's profile link
	//
	function make_profile_link($user_id, $username, $level) {
		
		switch ( $level ) {
			
			case 3:
				$levelclass = ' class="administrator"';
				break;
			case 2:
				$levelclass = ' class="moderator"';
				break;
			case 1:
				$levelclass = '';
				break;
			
		}
		
		return '<a href="'.$this->make_url('profile.php', array('id' => $user_id)).'"'.$levelclass.'>'.unhtml(stripslashes($username)).'</a>';
		
	}
	
	//
	// Create a forum statistics box like on the forum index
	//
	function forum_stats_box() {
		
		global $db, $template, $lang, $session;
		
		if ( $this->get_config('enable_forum_stats_box') && $this->get_user_level() >= $this->get_config('view_forum_stats_box_min_level') ) {
			
			//
			// Timestamp for defining last updated sessions
			//
			$min_updated = time() - ( $this->get_config('online_min_updated') * 60 );
			
			//
			// Get the session and user information
			//
			$result = $db->query("SELECT u.displayed_name, u.level, u.hide_from_online_list, s.user_id AS id, s.ip_addr FROM ( ".TABLE_PREFIX."sessions s LEFT JOIN ".TABLE_PREFIX."members u ON s.user_id = u.id ) WHERE s.updated > ".$min_updated." ORDER BY s.updated DESC");
			
			//
			// Arrays for holding a list of online guests and members.
			//
			$count = array(
				'total_members' => 0,
				'hidden_members' => 0,
				'guests' => 0
			);
			$list = array(
				'members' => array(),
				'guests' => array()
			);
			$memberlist = array();
			
			while ( $onlinedata = $db->fetch_result($result) ) {
				
				if ( !$onlinedata['id'] ) {
					
					//
					// This is a guest
					// Guests will only be counted per IP address
					//
					if ( !in_array($onlinedata['ip_addr'], $list['guests']) ) {
						
						$count['guests']++;
						$list['guests'][] = $onlinedata['ip_addr'];
						
					}
					
				} else {
					
					//
					// This is a member
					//
					if ( !in_array($onlinedata['id'], $list['members']) ) {
						
						if ( !$onlinedata['hide_from_online_list'] ) {
							
							$memberlist[] = $this->make_profile_link($onlinedata['id'], $onlinedata['displayed_name'], $onlinedata['level']);
							
						} else {
							
							if ( $this->get_user_level() == LEVEL_ADMIN )
								$memberlist[] = '<em>'.$this->make_profile_link($onlinedata['id'], $onlinedata['displayed_name'], $onlinedata['level']).'</em>';
							
							$count['hidden_members']++;
							
						}
						
						$count['total_members']++;
						$list['members'][] = $onlinedata['id'];
						
					}
					
				}
				
			}
			
			$latest_member = $this->get_stats('latest_member');
			
			if ( $count['total_members'] === 1 && $count['guests'] === 1 )
				$users_online = $lang['MemberGuestOnline'];
			elseif ( $count['total_members'] !== 1 && $count['guests'] === 1 )
				$users_online = $lang['MembersGuestOnline'];
			elseif ( $count['total_members'] === 1 && $count['guests'] !== 1 )
				$users_online = $lang['MemberGuestsOnline'];
			else
				$users_online = $lang['MembersGuestsOnline'];
			
			//
			// Parse the online box
			//
			$template->parse('forum_stats_box', 'various', array(
				'small_stats' => sprintf($lang['IndexStats'], $this->get_stats('posts'), $this->get_stats('topics'), $this->get_stats('members')),
				'newest_member' => ( !$this->get_stats('members') ) ? '' : ' '.sprintf($lang['NewestMemberExtended'], '<a href="'.$this->make_url('profile.php', array('id' => $latest_member['id'])).'">'.unhtml(stripslashes($latest_member['displayed_name'])).'</a>'),
				'users_online' => sprintf($users_online, $this->get_config('online_min_updated'), $count['total_members'], $count['hidden_members'], $count['guests']),
				'members_online' => ( count($memberlist) ) ? join(', ', $memberlist) : '',
				'detailed_list_link' => ( $this->get_config('enable_detailed_online_list') && $this->get_user_level() >= $this->get_config('view_detailed_online_list_min_level') ) ? '<a href="'.$this->make_url('online.php').'">'.$lang['Detailed'].'</a>' : ''
			));
			
		}
		
	}
	
	//
	// Get the server's load avarage value
	//
	function get_server_load() {
		
		$found_load = false;
		
		if ( strstr(PHP_OS, 'WIN') !== false ) {
			
			//
			// Afaik we can't get this on Windows
			//
			return false;
			
		} else {
			
			if ( file_exists('/proc/loadavg') && is_readable('/proc/loadavg') ) {
				
				//
				// We use the Linux method of getting the 3 average load
				// values of the server. This only works on Linux afaik...
				//
				$fh = fopen('/proc/loadavg', 'r');
				$out = fread($fh, 14);
				fclose($fh);
				if ( preg_match('#([0-9]+\.[0-9]{2}) ([0-9]+\.[0-9]{2}) ([0-9]+\.[0-9]{2})#', $out, $match) )
					return $match[1]; // we use the load average value of the past 1 minute
				else
					$found_load = false;
				
			}
			
			if ( !$found_load ) {
				
				//
				// Another way is running the uptime command and using its
				// output. This should also work on FreeBSD. The var $tmp
				// is unnecessary at this moment.
				//
				$out = @exec('uptime', $tmp, $retval);
				
				if ( !$retval ) {
					
					//
					// $retval contains the exit code 0 when ran successfully...
					//
					if ( preg_match('#([0-9]+\.[0-9]{2}), ([0-9]+\.[0-9]{2}), ([0-9]+\.[0-9]{2})#', $out, $match) )
						return $match[1]; // we use the load average value of the past 1 minute
					else
						return false;
					
				} else {
					
					//
					// We can't determine the server load... The server can't access
					// /proc/loadavg, can't run uptime or is running an unsupported OS
					//
					return false;
					
				}
				
			}
			
		}
		
	}
	
	//
	// Define the icon for forums
	//
	function forum_icon($id, $open, $post_time) {
		
		global $db, $session, $template, $lang;
		
		if ( $session->sess_info['user_id'] && !is_array($this->updated_forums) ) {
			
			$result = $db->query("SELECT t.id, t.forum_id, p.post_time FROM ".TABLE_PREFIX."topics t, ".TABLE_PREFIX."posts p WHERE p.id = t.last_post_id AND p.post_time > ".$_SESSION['previous_visit']);
			$this->updated_forums = array();
			while ( $topicsdata = $db->fetch_result($result) ) {
				
				if ( !in_array($topicsdata['forum_id'], $this->updated_forums) && ( !array_key_exists($topicsdata['id'], $_SESSION['viewed_topics']) || $_SESSION['viewed_topics'][$topicsdata['id']] < $topicsdata['post_time'] ) )
					$this->updated_forums[] = $topicsdata['forum_id'];
				
			}
			
		}
		
		if ( $session->sess_info['user_id'] && in_array($id, $this->updated_forums) ) {
			
			if ( $open ) {
				
				$forum_icon = $template->get_config('open_newposts_icon');
				$forum_status = $lang['NewPosts'];
				
			} else {
				
				$forum_icon = $template->get_config('closed_newposts_icon');
				$forum_status = $lang['LockedNewPosts'];
				
			}
			
		} else {
			
			if ( $open ) {
				
				$forum_icon = $template->get_config('open_nonewposts_icon');
				$forum_status = $lang['NoNewPosts'];
				
			} else {
				
				$forum_icon = $template->get_config('closed_nonewposts_icon');
				$forum_status = $lang['LockedNoNewPosts'];
				
			}
			
		}
		
		return array($forum_icon, $forum_status);
		
	}
	
	//
	// Define the icon for topics
	//
	function topic_icon($id, $locked, $post_time) {
		
		global $session, $template, $lang;
		
		if ( $session->sess_info['user_id'] && $_SESSION['previous_visit'] < $post_time && ( !array_key_exists($id, $_SESSION['viewed_topics']) || $_SESSION['viewed_topics'][$id] < $post_time ) ) {
			
			if ( !$locked ) {
				
				$topic_icon = $template->get_config('open_newposts_icon');
				$topic_status = $lang['NewPosts'];
				
			} else {
				
				$topic_icon = $template->get_config('closed_newposts_icon');
				$topic_status = $lang['LockedNewPosts'];
				
			}
			
		} else {
			
			if ( !$locked ) {
				
				$topic_icon = $template->get_config('open_nonewposts_icon');
				$topic_status = $lang['NoNewPosts'];
				
			} else {
				
				$topic_icon = $template->get_config('closed_nonewposts_icon');
				$topic_status = $lang['LockedNoNewPosts'];
				
			}
			
		}
		
		return array($topic_icon, $topic_status);
		
	}
	
	//
	// Calculate the age of a person based on a birthday date
	//
	function calculate_age($birthday) {
		
		$month = intval(substr($birthday, 4, 2));
		$day = intval(substr($birthday, 6, 2));
		$year = intval(substr($birthday, 0, 4));
		
		//
		// Because Windows doesn't allow dates before 1970 with mktime(),
		// we perform a trick to calculate dates before 1970.
		//
		if ( $year < 1970 ) {
			
			$years_before_unix_epoch = 1970 - $year;
			$false_year = $year + ( $years_before_unix_epoch * 2 );
			$timestamp = mktime(0, 0, 0, $month, $day, $false_year);
			$timestamp -= ( $years_before_unix_epoch * 31556926 * 2 );
			
		} else {
			
			$timestamp = mktime(0, 0, 0, $month, $day, $year);
			
		}
		
		return floor((time()-$timestamp)/31556926);
		
	}
	
	//
	// Get a list of template sets
	//
	function get_template_sets() {
		
		if ( !count($this->available['templates']) ) {
			
			$handle = opendir(ROOT_PATH.'templates');
			while ( false !== ( $template_name = readdir($handle) ) ) {
				
				if ( preg_match('#^[^\.]#', $template_name) && file_exists('./templates/'.$template_name.'/global.tpl.php') )
					$this->available['templates'][] = $template_name;
				
			}
			closedir($handle);
			sort($this->available['templates']);
			reset($this->available['templates']);
			
		}
		
		return $this->available['templates'];
		
	}
	
	//
	// Get a list of language packs
	//
	function get_language_packs() {
		
		if ( !count($this->available['languages']) ) {
			
			$handle = opendir(ROOT_PATH.'languages');
			while ( false !== ( $language_name = readdir($handle) ) ) {
				
				if ( preg_match('#^lang_(.+)\.php$#', $language_name, $language_name) )
					$this->available['languages'][] = $language_name[1];
				
			}
			closedir($handle);
			sort($this->available['languages']);
			reset($this->available['languages']);
			
		}
		
		return $this->available['languages'];
		
	}
	
	//
	// Return the sql tables with the table prefix
	//
	function get_usebb_tables() {
		
		global $db;
		
		$tables = array();
		$result = $db->query("SHOW TABLES LIKE '".TABLE_PREFIX."%'");
		while ( $out = $db->fetch_result($result) )
			$tables[] = current($out);
		return $tables;
		
	}
	
	//
	// Redirect the user to a certain location within UseBB
	//
	function redirect($page, $vars=array(), $anchor='') {
		
		$goto = $this->get_config('board_url').$this->make_url($page, $vars, false);
		if ( !empty($anchor) )
			$goto .= '#'.$anchor;
		$this->raw_redirect($goto);
		
	}
	
	//
	// Redirect with a predefined URL
	//
	function raw_redirect($url) {
		
		@header('Location: '.$url);
		die('<meta http-equiv="refresh" content="0;URL='.$url.'" />');
		
	}
	
}

?>