PHP编程：基于php的CMS中展示文章类实例分析

<?php
/***********************************************
//实例：
include("config.inc.php"); //数据库连接文件
$info = new sys_function;
$test = new show_article;
$test->set_sql("SELECT `id`,`title`,`dateandtime`,`thetype` FROM `df_company_bringup` ORDER BY `dateandtime` DESC");
$test->set_filename("display");
$test->set_morename("morearticle");
$test->set_icon(" ☆ ");
$test->set_omitstr("...");
$test->show_company_bringup();
***********************************************/
/****Article List Class****/
class show_article
{
 /****声明****/
 var $sql,$query,$arr,$article_list;
  var $strlen,$articleline,$dateandtime;
  var $len,$line,$icon,$omitstr,$line_height,$more_name;
  var $year,$month,$day,$datetype;
  var $showmore,$showdate,$showomit,$showclueon,$showicon;
 /****构造函数****/
 function show_article()
  {
  $this->set_strlen(40); //设置每行显示字数；
  $this->set_articleline(10); //设置Article显示行数；
  $this->set_showmore(false); //是否显示"更多Article"；
  $this->set_showdate(true); //是否显示Article发布日期；
  $this->set_showomit(true); //字数超过指定字符后是否显示所设置的字符,如"...";
  $this->set_showclueon(true); //是否显示Article提示(鼠标移动到Article标题上面显示的提示)；
  $this->set_open(true); //是否在新窗口打开;
  $this->set_showicon(true); //是否显示Article修改前缀;
  $this->set_lineheight(1.5); //段落行高值;
  $this->set_datetype(1); //设置日期格式,1为2004-10-21 2为2004年10月21日;
 }
 /****设置每行显示字数****/
 function set_strlen($strlen)
  {
  $this->len = $strlen;
  }
 /****设置Article显示行数****/
 function set_articleline($articleline)
  {
  $this->line = $articleline;
  }
 /****设置查询语句****/
 function set_sql($sql)
  {
  $this->sql = $sql;
  }
 /****设置Article标题前缀修饰****/
 function set_icon($icon)
  {
  $this->icon = $icon;
  }
 /****是否显示Article标题前缀修饰****/
 function set_showicon($showicon)
  {
  $this->showicon = $showicon;
  }
 /****是否打开新窗口****/
 function set_open($open)
  {
  $this->open = $open;
  }
 /****设置Article标题长度超过限制后显示的字符****/
 function set_omitstr($omitstr)
  {
  $this->omitstr = $omitstr;
  }
 /****设置打开Article的文件名****/
 function set_filename($filename)
  {
  $this->filename = $filename;
  }
 /****更多Article页面名称****/
 function set_morename($more_name)
  {
  $this->more_name = $more_name;
  }
 /****Article分类名称****/
 function set_typename($type_name)
  {
  $this->type_name = $type_name;
  }
 /****是否显示更多Article****/
 function set_showmore($showmore)
  {
  $this->showmore = $showmore;
  }
 /****设置日期格式(1:2004-10-21 2:2004年10月21日)****/
 function set_datetype($datetype)
  {
  $this->datetype = $datetype;
  }
 /****格式化日期****/
 function formatdate($dateandtime,$num)
  {
  list($year,$month,$day) = split("[-]",substr($dateandtime,0,10));
  if($num == 1){
   return $year."-".$month."-".$day;
  }else{
   return $year."年".$month."月".$day."日";
  }
  }
 /****是否显示Article发布日期****/
 function set_showdate($showdate)
  {
  $this->showdate = $showdate;
  }
 /****段落行高值****/
 function set_lineheight($line_height)
  {
  $this->line_height = $line_height;
  }
 /****是否显示Article标题长度超过限制后显示的字符****/
 function set_showomit($showomit)
  {
  $this->showomit = $showomit;
  }
 /****是否显示鼠标移动到Article上后显示的提示****/
 function set_showclueon($showclueon)
  {
  $this->showclueon = $showclueon;
  }
 /****从结果集中取得一行作为枚举数组****/
 function execute_row($query)
  {
  return $this->arr = mysql_fetch_row($query);
  }
 /****从结果集中取得一行作为关联数组,或数字数组,或二者兼有****/
 function execute_array($query)
  {
  return $this->arr = mysql_fetch_array($query);
  }
 /****将释放所有与结果标识符 result 所关联的内存****/
 function free_record($query)
  {
  @mysql_free_result($query);
  }
 /****调用指定Article List****/
 function show_company_bringup()
  {
  $n = 1;
  $article_list = "<div id='article_list".$n."' style='line-height:".$this->line_height."'>";
  $this->query = mysql_query($this->sql);
  while($this->execute_row($this->query))
  {
   if($this->showicon){$article_list .= $this->icon;}
  $article_list .= "<a href='".$this->filename.".php?id=".$this->arr[0]."'";
   if($this->showclueon){$article_list .= " title='".$this->arr[1]."' ";}
   if($this->open){$article_list .= " target='_blank' ";}
  $article_list .= ">";
   if(strlen($this->arr[1]) > $this->len)
   {
   if($this->showomit){
   $article_list .= substr($this->arr[1],0,$this->len).$this->omitstr;
   }else{
   $article_list .= substr($this->arr[1],0,$this->len);
   }
   }else{
   $article_list .= $this->arr[1];
   }
   if($this->showdate){$article_list .= "[".$this->formatdate($this->arr[2],$this->datetype)."]";}
  $article_list .= "</a><br>\n";
   if($n == $this->line){break;}
  $n++;
  }
  if($this->showmore){
  $article_list .= "</div><div id='article_list_more".$n."' align='right'><a href='".$this->more_name.".php?type=".$this->type_name."'>>> >更多</a></div>";
  }else{
  $article_list .= "</div>";
  }
  $this->free_record($this->query);
  print $article_list;
  }
}
?>