Tad 教材網 - 線上書籍

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\[1032\]PHP入門
=============

```
<pre class="brush:php;highlight:[143];">
<?php

/*----引入檔案----*/
  require_once "config.php";
  require_once "function.php";

/*----整理傳進來的變數或變數初始值----*/
  $op=isset($_REQUEST['op'])?$_REQUEST['op']:"";
  $sn=isset($_REQUEST['sn'])?intval($_REQUEST['sn']):"";

$toolbar="";
  if(isset($_SESSION['uid']) and !empty($_SESSION['uid'])){
    $toolbar='<a href="post.php" class="btn btn-primary btn-block"><i class="fa fa-pencil"></i> 發布新聞</a>';
  }

$error_msg=$news_list="";
  $uname=isset($_POST['uname'])?$_POST['uname']:"";
  $passwd=isset($_POST['passwd'])?$_POST['passwd']:"";

/*----流程控制----*/
  switch ($op) {

case 'db_error':
      $error_msg=error_msg("資料庫連線錯誤！！請檢查資料庫帳號、密碼是否正確！");
      break;

case 'view':
      //列出單一內容
      $news_list=view($sn);
      $toolbar.="<a href='{$_SERVER['PHP_SELF']}?g2p={$g2p}' class='btn btn-success btn-block'><i class='fa fa-home'></i> 回新聞列表</a>";
      break;

case 'delete':
      //刪除單一內容
      delete($sn);
      header("location: {$_SERVER['PHP_SELF']}");
      break;

case 'login':
     //登入
     login($uname,$passwd);
     header("location: {$_SERVER['PHP_SELF']}");
     break;

case 'logout':
     //登出
     logout();
     header("location: {$_SERVER['PHP_SELF']}");
     break;

default:
      //列出所有內容
      $news_list=list_news();
      break;
  }

/*----輸出----*/
  show_page('list_tpl');

/*----所有函數----*/
  function login($uname,$passwd){
    link_db();

$passwd=md5($passwd);
    $sql="select uid from eznews_users where uname='$uname' and passwd='$passwd'";
    $result=mysql_query($sql) or die("{$sql}<br>".mysql_error());
    list($uid)=mysql_fetch_row($result);

if(!empty($uid)){
      $_SESSION['uid']=$uid;
      $_SESSION['uname']=$uname;
    }

}

//登出
  function logout(){
    unset($_SESSION['uid']);
    unset($_SESSION['uname']);
  }

//列出所有內容
  function list_news(){
    global $g2p;
    include_once "PageBar.php";

link_db();

//讀取eznews資料表所有欄位(日期大到小排列)
    //$sql="select * from eznews order by post_time desc";

$sql="select a.*,b.cate_title from eznews as a
    left join eznews_cate as b on a.cate_sn=b.cate_sn
    order by a.status='置頂' desc, a.post_time desc";

$PageBar = new PageBar($sql, 10);
    $bar_arr=$PageBar->makeBar();
    $sql=$bar_arr['sql'];
    $bar=$bar_arr['bar'];

//傳回值存到 $result 以供抓取資料用
    $result=mysql_query($sql) or die("{$sql}<br>".mysql_error());

$tools_title="";
    if(isset($_SESSION['uid']) and !empty($_SESSION['uid'])){
       $tools_title="
       <th class='col-md-2 text-center'>功能</th>
       ";
    }

$news_list="
    <script>
    function del_func(sn){
     var sure = window.confirm('確定要刪除此資料？');
     if (!sure) return;
     location.href='index.php?op=delete&sn=' + sn;
    }
    </script>

<h1>列出所有新聞</h1>
    $bar
    <table class='table table-striped table-bordered'>
    <tr>
      <th class='col-md-2 text-center'>分類</th>
      <th class='col-md-5 text-center'>新聞標題</th>
      <th class='col-md-3 text-center'>發布時間</th>
      $tools_title
    </tr>

";
    //取回資料庫一筆資料，並以欄位名稱為索引的資料陣列
    while($news=mysql_fetch_assoc($result)){

$title=empty($news['news_title'])?"無標題":$news['news_title'];
      $top_label=$news['status']=="置頂"?"<span class='label label-danger'>置頂</span>":"";

$color=$news['status']=="高亮"?"class='warning'":"";

$tools="";
      if(isset($_SESSION['uid']) and !empty($_SESSION['uid']) and $news['uid']==$_SESSION['uid']){
         $tools="
         <td class='text-center'>
           <a href='javascript:del_func({$news['sn']})' class='btn btn-xs btn-danger'>刪除</a>
           <a href='post.php?op=modify&sn={$news['sn']}' class='btn btn-xs btn-warning'>編輯</a>
         </td>
         ";
      }

$news_list.="
      <tr $color>
        <td>
          {$news['cate_title']}
        </td>
        <td>
          <span class='label label-info'>{$news['counter']}</span>
          {$top_label}
          <a href='{$_SERVER['PHP_SELF']}?op=view&sn={$news['sn']}'>{$title}</a>
        </td>
        <td class='text-center'>{$news['post_time']}</td>
        $tools
      </tr>
      ";
      //$news_list=$news_list."<li>{$news['news_title']}</li>";
    }
    $news_list.="</table>
    $bar";

return $news_list;
  }

//顯示單一頁面
  function view($sn=""){
    link_db();

$sql="update `eznews` set `counter` = `counter` + 1 where sn='{$sn}'";
    mysql_query($sql) or die("{$sql}<br>".mysql_error());

//讀取eznews資料表所有欄位，並指定某一筆特定資料
    $sql="select a.*,b.* from eznews as a
    left join eznews_cate as b on a.cate_sn=b.cate_sn
    where a.sn='$sn'";

//傳回值存到 $result 以供抓取資料用
    $result=mysql_query($sql) or die("{$sql}<br>".mysql_error());
    $news=mysql_fetch_assoc($result);

$news_content=$news['news_content'];

//抓附檔
    $sql="select * from eznews_files where sn={$sn}";
    $result=mysql_query($sql) or die("{$sql}<br>".mysql_error());
    $files_list="";
    while($file=mysql_fetch_assoc($result)){
      //判斷是否為圖檔
      if(strpos($file['file_type'], "image")!==false){
        $show_file="<img src='uploads/{$file['file_new_name']}' style='width: 120px'>";
      }else{
        $show_file=$file['file_name'];
      }

$files_list.="<li><a href='uploads/{$file['file_new_name']}' target='_blank'>{$show_file}</a></li>";
    }

$one_news="<h1><span class='label label-info'>{$news['cate_title']}</span> {$news['news_title']}</h1>

點閱數：{$news['counter']}

<div class='well'>
      {$news_content}
    </div>
    $files_list
    ";

return $one_news;
  }

//刪除單一頁面
  function delete($sn=""){
    if(!isset($_SESSION['uid']) or empty($_SESSION['uid'])){
       return;
    }

link_db();

//刪除指定某一筆特定資料
    $sql="delete from eznews where sn='$sn' and uid='{$_SESSION['uid']}'";

mysql_query($sql) or die("{$sql}<br>".mysql_error());

}
?>
```

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