functions.php

国外非常不错的论坛

		);
		$min_level = intval($auth_int[$actions[$action]]);
		
		//
		// If the user level is equal or greater than the
		// auth integer, return a true, otherwise return a false.
		//
		if ( $userlevel >= $min_level )
			return true;
		else
			return false;
		
	}
	
	//
	// Return a list of moderators, clickable and seperated with commas
	//
	function get_mods_list($forum, $listarray=false) {
		
		global $db, $lang;
		
		$forum_moderators = array();
		
		if ( is_array($listarray) && count($listarray) ) {
			
			foreach ( $listarray as $modsdata ) {
				
				if ( $modsdata['forum_id'] == $forum )
					$forum_moderators[] = $this->make_profile_link($modsdata['id'], $modsdata['displayed_name'], $modsdata['level']);
				
			}
			
			if ( !count($forum_moderators) ) {
				
				return $lang['Nobody'];
				
			}
			
		} else {
			
			$result = $db->query("SELECT u.id, u.displayed_name, u.level FROM ".TABLE_PREFIX."members u, ".TABLE_PREFIX."moderators m WHERE m.forum_id = ".$forum." AND m.user_id = u.id ORDER BY u.displayed_name");
			while ( $modsdata = $db->fetch_result($result) )
				$forum_moderators[] = $this->make_profile_link($modsdata['id'], $modsdata['displayed_name'], $modsdata['level']);
				
			if ( !count($forum_moderators) ) {
				
				return $lang['Nobody'];
				
			}
			
		}
		
		//
		// Join all values in the array
		//
		return join(', ', $forum_moderators);
		
	}
	
	//
	// Return a clickable list of pages
	//
	function make_page_links($pages_number, $current_page, $items_number, $items_per_page, $page_name, $page_id_val=NULL, $back_forward_links=true, $url_vars=array()) {
		
		global $lang;
		
		if ( intval($items_number) > intval($items_per_page) ) {
			
			$page_links = array();
			$page_links_groups_length = 4;
			
			if ( !$current_page ) {
				
				$current_page = $pages_number+1;
				$page_links_groups_length++;
				
			}
			
			for ( $i = 1; $i <= $pages_number; $i++ ) {
				
				if ( $current_page != $i ) {
					
					if ( $i+$page_links_groups_length >= $current_page && $i-$page_links_groups_length <= $current_page ) {
						
						if ( valid_int($page_id_val) )
							$url_vars['id'] = $page_id_val;
						$url_vars['page'] = $i;
						$page_links[] = '<a href="'.$this->make_url($page_name, $url_vars).'">'.$i.'</a>';
						
					} else {
						
						if ( end($page_links) != '...' )
							$page_links[] = '...';
						
					}
					
				} else {
					
					$page_links[] = '<strong>'.$i.'</strong>';
					
				}
				
			}
			
			$page_links = join(' ',$page_links);
			
			if ( $back_forward_links ) {
				
				if ( valid_int($page_id_val) )
					$url_vars['id'] = $page_id_val;
				
				if ( $current_page > 1 ) {
					
					$url_vars['page'] = $current_page-1;
					$page_links = '<a href="'.$this->make_url($page_name, $url_vars).'">&lt;</a> '.$page_links;
					
				}
				if ( $current_page < $pages_number ) {
					
					$url_vars['page'] = $current_page+1;
					$page_links .= ' <a href="'.$this->make_url($page_name, $url_vars).'">&gt;</a>';
					
				}
				if ( $current_page > 2 ) {
					
					$url_vars['page'] = 1;
					$page_links = '<a href="'.$this->make_url($page_name, $url_vars).'">&laquo;</a> '.$page_links;
					
				}
				if ( $current_page+1 < $pages_number ) {
					
					$url_vars['page'] = $pages_number;
					$page_links .= ' <a href="'.$this->make_url($page_name, $url_vars).'">&raquo;</a>';
					
				}
				
			}
			
			$page_links = sprintf($lang['PageLinks'], $page_links);
			
		} else {
			
			$page_links = sprintf($lang['PageLinks'], '1');
			
		}
		
		return $page_links;
		
	}
	
	//
	// Apply BBCode and smilies to a string
	//
	function markup($string, $bbcode=true, $smilies=true, $html=false) {
		
		global $db, $template, $lang;
		
		$string = preg_replace('#(script|about|applet|activex|chrome):#is', '\\1&#058;', $string);
		
		//
		// Needed by some BBCode regexps and smilies
		//
		$string = ' '.$string.' ';
		
		if ( !$html )
			$string = unhtml($string);
		
		if ( $smilies ) {
			
			foreach ( $template->get_config('smilies') as $pattern => $img )
				$string = preg_replace('#([\s\]\[])'.preg_quote(unhtml($pattern), '#').'([\s\]\[])#', '\\1<img src="templates/'.$this->get_config('template').'/smilies/'.$img.'" alt="'.unhtml($pattern).'" />\\2', $string);
			
		}
		
		if ( $bbcode ) {
			
			$target_blank = ( $this->get_config('target_blank') ) ? ' target="_blank"' : '';
			$rel_nofollow = ( $this->get_config('rel_nofollow') ) ? ' rel="nofollow"' : '';
			
			//
			// Difficult parsing of code tags
			//
			if ( preg_match('#\[code\](.*?)\[/code\]#is', $string) ) {
				
				$string_parts = preg_split('#(\[code\])#is', $string, -1, PREG_SPLIT_NO_EMPTY | PREG_SPLIT_DELIM_CAPTURE);
				$new_string_parts = array();
				foreach ( $string_parts as $string_part ) {
					
					if ( preg_match_all('#(\[/code\])#is', $string_part, $matches) ) {
						
						$end_tags_count = count($matches[0]);
						$string_parts2 = preg_split('#(\[/code\])#is', $string_part, -1, PREG_SPLIT_NO_EMPTY | PREG_SPLIT_DELIM_CAPTURE);
						$i = 1;
						$string_part = '';
						foreach ( $string_parts2 as $string_part2 ) {
							
							if ( preg_match('#\[/code\]#is', $string_part2) ) {
								
								if ( $i < $end_tags_count ) {
									
									$string_part .= preg_replace('#<img src="(.*?)" alt="(.*?)" />#', '\\2', preg_replace(array('#\[#', '#\]#'), array('&#91;', '&#93;'), $string_part2));
									
								} else {
									
									$string_part .= $string_part2;
									
								}
								$i++;
								
							} else {
								
								if ( $i === $end_tags_count ) {
									
									$string_part .= preg_replace('#<img src="(.*?)" alt="(.*?)" />#', '\\2', preg_replace(array('#\[#', '#\]#'), array('&#91;', '&#93;'), $string_part2));
									
								} else {
									
									$string_part .= $string_part2;
									
								}
								
							}
							
						}
						
					}
					$new_string_parts[] = $string_part;
					
				}
				$string = join('', $new_string_parts);
				preg_match_all("#\[code\](.*?)\[/code\]#is", $string, $matches);				
				foreach ( $matches[1] as $oldpart ) {
					
					$newpart = preg_replace(array('#\[#', '#\]#', "#\n#", "#\r#"), array('&#91;', '&#93;', '<br />', ''), $oldpart);
					$string = str_replace($oldpart, $newpart, $string);
					
				}
				$string = preg_replace("#\[code\](.*?)\[/code\]#is", sprintf($template->get_config('code_format'), '\\1'), $string);
				
			}
			
			//
			// Parse URL's and e-mail addresses
			//
			$ignore_chars = "^a-z0-9"; # warning, rawly included in regex!
			$string = preg_replace(array(
				"#([\s][".$ignore_chars."]*?)([\w]+?://[\w\#$%&~/.\-;:=,?@\[\]+]*?)([".$ignore_chars."]*?[\s])#is",
				"#([\s][".$ignore_chars."]*?)([a-z0-9&\-_.]+?@[\w\-]+\.([\w\-\.]+\.)?[\w]+)([".$ignore_chars."]*?[\s])#is"
			), array(
				'\\1<a href="\\2"'.$target_blank.$rel_nofollow.'>\\2</a>\\3',
				'\\1<a href="mailto:\\2">\\2</a>\\4'
			), $string);
			
			//
			// All kinds of BBCode regexps
			//
			$regexps = array(
				// [b]text[/b]
					"#\[b\](.*?)\[/b\]#is" => '<strong>\\1</strong>',
				// [i]text[/i]
					"#\[i\](.*?)\[/i\]#is" => '<em>\\1</em>',
				// [u]text[/u]
					"#\[u\](.*?)\[/u\]#is" => '<u>\\1</u>',
				// [s]text[/s]
					"#\[s\](.*?)\[/s\]#is" => '<del>\\1</del>',
				// [img]image[/img]
					"#\[img\]([\w]+?://[\w\#$%&~/.\-;:=,?@\[\]+]*?)\.(gif|png|jpe?g)\[/img\]#is" => '<img src="\\1.\\2" alt="'.$lang['UserPostedImage'].'" />',
				// [url]http://www.usebb.net[/url]
					"#\[url\]([\w]+?://[\w\#$%&~/.\-;:=,?@\[\]+]*?)\[/url\]#is" => '<a href="\\1"'.$target_blank.$rel_nofollow.'>\\1</a>',
				// [url=http://www.usebb.net]UseBB[/url]
					"#\[url=([\w]+?://[\w\#$%&~/.\-;:=,?@\[\]+]*?)\](.*?)\[/url\]#is" => '<a href="\\1"'.$target_blank.$rel_nofollow.'>\\2</a>',
				// [mailto][e-mail][/mailto]
					"#\[mailto\]([a-z0-9&\-_.]+?@[\w\-]+\.([\w\-\.]+\.)?[\w]+)\[/mailto\]#is" => '<a href="mailto:\\1">\\1</a>',
				// [mailto=[e-mail]]mail me[/mailto]
					"#\[mailto=([a-z0-9&\-_.]+?@[\w\-]+\.([\w\-\.]+\.)?[\w]+)\](.*?)\[/mailto\]#is" => '<a href="mailto:\\1">\\3</a>',
				// [color=red]text[/color]
					"#\[color=([\#a-z0-9]+)\](.*?)\[/color\]#is" => '<span style="color:\\1">\\2</span>',
				// [size=999]too big text[/size]
					"#\[size=([0-9]{3,})\](.*?)\[/size\]#is" => '\\2',
				// [size=14]text[/size]
					"#\[size=([0-9]*?)\](.*?)\[/size\]#is" => '<span style="font-size:\\1pt">\\2</span>',
				// [google=keyword]text[/google]
					"#\[google=(.*?)\](.*?)\[/google\]#is" => '<a href="http://www.google.com/search?q=\\1"'.$target_blank.$rel_nofollow.'>\\2</a>',
			);
			
			//
			// Now parse those regexps
			//
			foreach ( $regexps as $find => $replace )
				$string = preg_replace($find, $replace, $string);
			
			//
			// Now parse quote tags
			//
			while ( preg_match("#\[quote\](.*?)\[/quote\]#is", $string) )
				$string = preg_replace("#\[quote\](.*?)\[/quote\]#is", sprintf($template->get_config('quote_format'), $lang['Quote'], '\\1'), $string);
			while ( preg_match("#\[quote=(.*?)\](.*?)\[/quote\]#is", $string) )
				$string = preg_replace("#\[quote=(.*?)\](.*?)\[/quote\]#is", sprintf($template->get_config('quote_format'), sprintf($lang['Wrote'], '\\1'), '\\2'), $string);
			
		}
		
		if ( !$html ) {
			
			$string = str_replace("\n", "<br />\n", $string);
			$string = str_replace("\r", "", $string);
			
		}
		
		return trim($string);
		
	}
	
	//
	// Return the BBCode control buttons
	//
	function get_bbcode_controls() {
		
		global $lang, $template;
		
		$controls = array(
			array('[b]', '[/b]', 'B', 'font-weight: bold'),
			array('[i]', '[/i]', 'I', 'font-style: italic'),
			array('[u]', '[/u]', 'U', 'text-decoration: underline'),
			array('[s]', '[/s]', 'S', 'text-decoration: line-through'),
			array('[quote]', '[/quote]', $lang['Quote'], ''),
			array('[code]', '[/code]', $lang['Code'], ''),
			array('[img]', '[/img]', $lang['Img'], ''),
			array('[url=http://www.example.com]', '[/url]', $lang['URL'], ''),
			array('[color=red]', '[/color]', $lang['Color'], ''),
			array('[size=14]', '[/size]', $lang['Size'], '')
		);
		
		$out = array();
		foreach ( $controls as $data ) {
			
			$out[] = '<a href="javascript:insert_tags(\''.$data[0].'\', \''.$data[1].'\')" style="'.$data[3].'">'.$data[2].'</a>';
			
		}
		
		return join($template->get_config('post_form_bbcode_seperator'), $out);
		
	}
	
	//
	// Return the smiley control graphics
	//
	function get_smiley_controls() {
		
		global $template;
		
		$smilies = $template->get_config('smilies');
		$smilies = array_unique($smilies);
		$out = array();
		foreach ( $smilies as $pattern => $img ) {
			
			$out[] = '<a href="javascript:insert_smiley(\''.addslashes(unhtml($pattern)).'\')"><img src="templates/'.$this->get_config('template').'/smilies/'.$img.'" alt="'.unhtml($pattern).'" /></a>';
			
		}
		
		return join($template->get_config('post_form_smiley_seperator'), $out);
		
	}
	
	function replace_badwords($string) {
		
		global $db;
		
		if ( !isset($this->badwords) ) {
			
			$result = $db->query("SELECT word, replacement FROM ".TABLE_PREFIX."badwords ORDER BY word ASC");
			$this->badwords = array();
			while ( $data = $db->fetch_result($result) )
				$this->badwords['#\b(' . str_replace('\*', '\w*?', preg_quote(stripslashes($data['word']), '#')) . ')\b#i'] = stripslashes($data['replacement']);
			
		}
		
		foreach ( $this->badwords as $badword => $replacement )
			$string = preg_replace($badword, $replacement, $string);
		
		return $string;
		
	}
	
	//
	// Replace all whitespace by a space except in <textarea /> and <pre />
	//
	function compress_sourcecode($string) {
		
		$matches = array();
		preg_match_all("#<textarea.*?>(.*?)</textarea>#is", $string, $matches[0]);
		preg_match_all("#<pre.*?>(.*?)</pre>#is", $string, $matches[1]);
		preg_match_all("#<script.*?>(.*?)</script>#is", $string, $matches[2]);
		$matches = array_merge($matches[0][0], $matches[1][0], $matches[2][0]);
		foreach ( $matches as $oldpart ) {
			
			$newpart = str_replace("\n", "\0", $oldpart);
			$string = str_replace($oldpart, $newpart, $string);
			
		}
		$string = str_replace("\r", "", $string);
		$string = preg_replace("#\s+#", ' ', $string);
		$string = str_replace("\0", "\n", $string);
		return $string;
		
	}
	
	//
	// Timezone handling
	//
	function timezone_handler($action, $param=NULL) {
		
		$timezones = array(
			'-12' => '-12:00',
			'-11' => '-11:00',
			'-10' => '-10:00',
			'-9' => '-9:00',
			'-8' => '-8:00',
			'-7' => '-7:00',
			'-6' => '-6:00',
			'-5' => '-5:00',
			'-4' => '-4:00',
			'-3.5' => '-3:30',
			'-3' => '-3:00',
			'-2' => '-2:00',
			'-1' => '-1:00',
			'0' => '+0:00',
			'+1' => '+1:00',
			'+2' => '+2:00',
			'+3' => '+3:00',
			'+3.5' => '+3:30',
			'+4' => '+4:00',
			'+4.5' => '+4:30',
			'+5' => '+5:00',