php开发文章发布示例(正则表达式实例开发)

 1 <form method="post" action="viewthread.php" target="_blank">
 2     <h2 align="center">发表文章实例开发</h2>
 3     <div style="width:200;float:left">
 4         <h5>选项</h5>
 5         <ul style="list-style:none;margin:0px;padding:0px">
 6             <li><input type="checkbox" name="parse[]" value="1">删除HTML标签</li>
 7             <li><input type="checkbox" name="parse[]" value="2">转换HTML标签为实体</li>
 8             <li><input type="checkbox" name="parse[]" value="3">使用UBB代码</li>
 9             <li><input type="checkbox" name="parse[]" value="4">开启URL识别</li>
10             <li title="可用的表情:
11                                 【:),/wx,微笑】【:@,/fn,发怒】
12                                 【:kiss,/kill,/sa,示爱】
13                                 【:p,/tx,偷笑】【:q,/dk,大哭】">
14                 <input type="checkbox" name="parse[]" value="5">使用表情</li>
15             <li><input type="checkbox" name="parse[]" value="6">禁用非法关键字</li>
16             <li><input type="checkbox" name="parse[]" value="7">PHP代码设为高亮</li>
17             <li><input type="checkbox" name="parse[]" value="8">原样显示</li>
18             <li><input type="checkbox" name="parse[]" value="9">同步换行</li>
19         </ul>
20     </div>
21     <div style="width:300;float:left">
22         <h5>标题<input type="text" name="subject" size=50></h5>
23         <h5>内容<textarea rows="7" cols="50" name="message"></textarea></h5>
24         <input type="submit" name="replysubmit" value="发表帖子">
25     </div>
26 </form>

1 <?php
2     require "article.class.php";
3     $article = new Article($_POST["subject"],$_POST["message"],$_POST["parse"]);
4     echo $article->getSubject();
5     echo "<hr>";
6     echo $article->getMessage();
7 ?>

  1 <?php
  2     class Article{
  3         private $subject;
  4         private $message;
  5         function __construct($subject="",$message="",$parse=array()){
  6             $this->subject = $this->html2Text($subject);
  7             if(!empty($parse)){
  8                 foreach($parse as $value){
  9                     switch($value){
 10                         case 1:
 11                             $message = $this->delHtmlTags($message);
 12                             break;
 13                         case 2:
 14                             $message = $this->html2Text($message);
 15                             break;
 16                         case 3:
 17                             $message = $this->UBBCode2Html($message);
 18                             break;
 19                         case 4:
 20                             $message = $this->parseURL($message);
 21                             break;
 22                         case 5:
 23                             $message = $this->parseSmilies($message);
 24                             break;
 25                         case 6:
 26                             $message = $this->disableKeyWords($message);
 27                             break;
 28                         case 7:
 29                             $message = $this->prasePHPCode($message);
 30                             break;
 31                         case 8:
 32                             $message = $this->prasePer($message);
 33                             break;
 34                         case 9:
 35                             $message = $this->nltobr($message);
 36                             break;
 37                     }
 38                 }
 39             }
 40             $this->message = $message;
 41         }
 42         
 43         private function delHtmlTags($message){
 44             return strip_tags($message);
 45         }
 46         
 47         private function html2Text($message){
 48             return htmlspecialchars(stripslashes($message));
 49         }
 50         
 51         private function UBBCode2Html($message){
 52             $pattern = array(
 53                 '/\[b\]/i','/\[\/b\]/i','/\[i\]/i',
 54                 '/\[\/i\]/i','/\[u\]/i','/\[\/u\]/i',
 55                 '/\[font=([^\[\<]+?)\]/i',
 56                 '/\[color=([#\w]+?)\]/i',
 57                 '/\[size=(\d+?)\]/i',
 58                 '/\[size=(\d+(\.\d+)?(px|pt|in|cm|mm|pc|em|ex|%)+?)\]/i',
 59                 '/\[align=(left|center|right)\]/i',
 60                 '/\[url=www.([^\["\']+?)\](.+?)\[\/url\]/is',
 61                 '/\[url=(https?|ftp|gopher|news|telnet){1}:\/\/([^\["\']+?)\](.+?)\[\/url]/is',
 62                 '/\[email\]\s*([a-z0-9\-_.+]+)@([a-z0-9\-_.]+)\s*\[\/email\]/i',
 63                 '/\[email=([a-z0-9\-_.+]+)@([a-z0-9\-_]+[.][a-z0-9\-_.]+)\](.+?)\[\/email\]/is',
 64                 '/\[img\](.+?)\[\/img\]/',
 65                 '/\[\/color\]/i',
 66                 '/\[\/size\]/i',
 67                 '/\[\/font\]/i',
 68                 '/\[\/align\]/'
 69             );
 70             
 71             $replace = array(
 72                 '<b>','</b>','<i>',
 73                 '</i>','<u>','</u>',
 74                 '<font face="\\1">',
 75                 '<font color="\\1">',
 76                 '<font size="\\1">',
 77                 '<font style=\"font-size:\\1\">',
 78                 '<p align="\\1">',
 79                 '<a href="http://www.\\1" target="_blank">\\2</a>',
 80                 '<a href="\\1://\\2" target="_blank">\\3</a>',
 81                 '<a href="mailto:\\1@\\2">\\1@\\2</a>',
 82                 '<a href="mailto:\\1@\\2">\\3</a>',
 83                 '<img src="\\1">',
 84                 '</font>','</font>','</font>','</p>'
 85             );
 86             return preg_replace($pattern,$replace,$message);
 87         }
 88         
 89         private function cuturl($url){
 90             $length = 65;
 91             $url = substr(strtolower($url),0,4) == 'www.'?"http://$url":$url;
 92             $urllink = "<a href=\"".$url.'"target="_blank">';
 93             if(strlen($url)>$length){
 94                 $url = substr($url,0,intval($length*0.5)).'...'.substr($url,-intval($length*0.3));
 95             }
 96             $urllink .=$url.'</a>';
 97             return $urllink;
 98         }
 99         
100         private function parseURL($message){
101             $urlPattern = "/(www.|https?:\/\/|ftp:\/\/|news:\/\/|telnet:\/\/){1}([^\[\"']+?)(com|net|org)(\/[\w-\.\/?\%\&\=]*)?/ei";
102             return preg_replace($urlPattern,"\$this->cuturl('\\1\\2\\3\\4')",$message);
103         }
104         
105         private function parseSmilies($message){
106             $pattern = array(
107                 '/:\)|\/wx|微笑/i',
108                 '/:@|\/fn|发怒/i',
109                 '/:kiss|\/kill|\/sa|示爱/',
110                 '/:p|\/tx|偷笑/i',
111                 '/:q|\/dk|大哭/i'
112             );
113             $replace = array(
114                 '<img src="smilies/smile.png" alt="微笑">',
115                 '<img src="smilies/huffy.png" alt="发怒">',
116                 '<img src="smilies/kiss.png" alt="示爱">',
117                 '<img src="smilies/titter.png" alt="偷笑">',
118                 '<img src="smilies/cry.png" alt="大哭">'
119             );
120             return preg_replace($pattern,$replace,$message);
121         }
122         
123         private function disableKeyWords($message){
124             $keywords_disable = array("非法关键字一","非法关键字二","非法关键字三");
125             return str_replace($keywords_disable,"**",$message);
126         }
127         
128         private function prasePHPCode($message){
129             $pattern = '/(<\?.*?\?>)/ise';
130             $replace = '"<pre style=\"background:#ddd\">".highlight_string("\\1",true)."</pre>"';
131             return preg_replace($pattern,$replace,$message);
132         }
133         
134         private function prasePer($message){
135             return '<pre>'.$message.'</pre>';
136         }
137         
138         private function nltobr($message){
139             return nl2br($message);
140         }
141         
142         public function getSubject(){
143             return '<h1 align=center>'.$this->subject.'</h1>';
144         }
145         
146         public function getMessage(){
147             return $this->message;
148         }
149     }
150 ?>