論壇標籤bbcode的範例

房東：新手
發表時間：2007-01-19

現在非常多程式用到 bbcode

現在給大家參考一下

bbcode_class.php
php程式碼:

function begtoend($htmltag){
return preg_replace('/<($A-Za-z]+)>/','',$htmltag);
}
function replace_pcre_array($text,$array){
$pattern = array_keys($array);
$replace = array_values($array);
$text = preg_replace($pattern,$replace,$text);
return $text;
}
class bbcode{
var $tags;
var $settings;
function bbcode(){
$this->tags = array();
$this->settings = array('enced'=>true);
}
function get_data($name,$cfa = ''){
if(!array_key_exists($name,$this->tags)) return '';
$data = $this->tags$$name];
if($cfa) $sbc = $cfa; else $sbc = $name;
if(!is_array($data)){
$data = preg_replace('/^ALIAS(.+)$/','$1',$data);
return $this->get_data($data,$sbc);
}else{
$data$'Name'] = $sbc;
return $data;
}
}
function change_setting($name,$value){
$this->settings$$name] = $value;
}
function add_alias($name,$aliasof){
if(!array_key_exists($aliasof,$this->tags) or array_key_exists($name,$this->tags)) return false;
$this->tags$$name] = 'ALIAS'.$aliasof;
return true;
}
function onparam($param,$regexarray){
$param = replace_pcre_array($param,$regexarray);
if(!$this->settings$'enced']){
$param = htmlentities($param);
}
return $param;
}
function export_definition(){
return serialize($this->tags);
}
function import_definiton($definition,$mode = 'append'){
switch($mode){
case 'append':
$array = unserialize($definition);
$this->tags = $array + $this->tags;
break;
case 'prepend':
$array = unserialize($definition);
$this->tags = $this->tags + $array;
break;
case 'overwrite':
$this->tags = unserialize($definition);
break;
default:
return false;
}
return true;
}
function add_tag($params){
if(!is_array($params)) return 'Paramater array not an array.';
if(!array_key_exists('Name',$params) or empty($params$'Name'])) return 'Name parameter is required.';
if(preg_match('/$^A-Za-z]/',$params$'Name'])) return 'Name can only contain letters.';
if(!array_key_exists('HasParam',$params)) $params$'HasParam'] = false;
if(!array_key_exists('HtmlBegin',$params)) return 'HtmlBegin paremater not specified!';
if(!array_key_exists('HtmlEnd',$params)){
if(preg_match('/^(<$A-Za-z]>)+$/',$params$'HtmlBegin'])){
$params$'HtmlEnd'] = begtoend($params$'HtmlBegin']);
}else{
return 'You didn't specify the HtmlEnd parameter, and your HtmlBegin parameter is too complex to change to an HtmlEnd parameter. Please specify HtmlEnd.';
}
}
if(!array_key_exists('ParamRegexReplace',$params)) $params$'ParamRegexReplace'] = array();
if(!array_key_exists('ParamRegex',$params)) $params$'ParamRegex'] = '$^]]+';
if(!array_key_exists('HasEnd',$params)) $params$'HasEnd'] = true;
if(array_key_exists($params$'Name'],$this->tags)) return 'The name you specified is already in use.';
$this->tags$$params$'Name']] = $params;
return '';
}
function parse_bbcode($text){
foreach($this->tags as $tagname => $tagdata){
if(!is_array($tagdata)) $tagdata = $this->get_data($tagname);
$startfind = "/${$tagdata$'Name']}";
if($tagdata$'HasParam']){
$startfind.= '=('.$tagdata$'ParamRegex'].')';
}
$startfind.= ']/';
if($tagdata$'HasEnd']){
$endfind = "$/{$tagdata$'Name']}]";
$starttags = preg_match_all($startfind,$text,$ignore);
$endtags = substr_count($text,$endfind);
if($endtags < $starttags){
$text.= str_repeat($endfind,$starttags - $endtags);
}
$text = str_replace($endfind,$tagdata$'HtmlEnd'],$text);
}
$replace = str_replace(array('%%P%%','%%p%%'),''.$this->onparam('$1',$tagdata$'ParamRegexReplace']).'','''.$tagdata$'HtmlBegin'].''');
$text = preg_replace($startfind.'e',$replace,$text);
}
return $text;
}
}
?>

index.php

require_once('bbcode.php');
$bbcode = new bbcode();
$bbcode->add_tag(array('Name'=>'b','HtmlBegin'=>'','HtmlEnd'=>''));
$bbcode->add_tag(array('Name'=>'i','HtmlBegin'=>'','HtmlEnd'=>''));
$bbcode->add_tag(array('Name'=>'u','HtmlBegin'=>'','HtmlEnd'=>''));
$bbcode->add_tag(array('Name'=>'link','HasParam'=>true,'HtmlBegin'=>'','HtmlEnd'=>''));
$bbcode->add_tag(array('Name'=>'color','HasParam'=>true,'ParamRegex'=>'$A-Za-z0-9#]+','HtmlBegin'=>'','HtmlEnd'=>'','ParamRegexReplace'=>array('/^$A-Fa-f0-9]{6}$/'=>'#$0')));
$bbcode->add_tag(array('Name'=>'email','HasParam'=>true,'HtmlBegin'=>'','HtmlEnd'=>''));
$bbcode->add_tag(array('Name'=>'size','HasParam'=>true,'HtmlBegin'=>'','HtmlEnd'=>'','ParamRegex'=>'$0-9]+'));
$bbcode->add_tag(array('Name'=>'bg','HasParam'=>true,'HtmlBegin'=>'','HtmlEnd'=>'','ParamRegex'=>'$A-Za-z0-9#]+'));
$bbcode->add_tag(array('Name'=>'s','HtmlBegin'=>'','HtmlEnd'=>''));
$bbcode->add_tag(array('Name'=>'align','HtmlBegin'=>'

','HtmlEnd'=>'

','HasParam'=>true,'ParamRegex'=>'(center|right|left)'));
$bbcode->add_alias('url','link');
/* This outputs:
Bold text
Italic text
Underlinex text
A link
Another link
Red text
Email me!
20-point text
Text with a red background
Text with a line through it

Centered text

*/
print $bbcode->parse_bbcode('$b]Bold text$/b]
$i]Italic text$/i]
$u]Underlinex text$/u]
$link=http://www.twbb.org/]A link$/link]
$url=http://www.twbb.org/]Another link$/url]
$color=red]Red text$/color]
[email protected]]Email me!$/email]
$size=20]20-point text$/size]
$bg=red]Text with a red background$/bg]
$s]Text with a line through it$/s]
$align=center]Centered text$/align]');
?>

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