PHP開發簡單圖書借閱系統之創建公共網頁

在我們這個借閱系統中頭部的HTML是固定不變的

#不會隨著頁面的跳躍而改變。

為了不重複的編寫頭部程式碼,我們需要製作一個head.php檔案

寫入頭部HTML程式碼,以方便在各個檔案中呼叫。

<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<table width="" border="0" align="center" cellpadding="0" cellspacing="1" bgcolor="#CCCCCC" >
  <tr>
    <td bgcolor="#FFFFFF"><img src="https://img.php.cn/upload/course/000/000/008/58215f071f35b180.jpg" width="440" height="200" /></td>
  </tr>
  <tr>
    <td bgcolor="#FFFFFF"><table width="440" height="50" border="0" align="center" cellpadding="0" cellspacing="0">
        <tr>
          <td align="center" background="https://img.php.cn/upload/course/000/000/008/58215f29827c0755.jpg">
          <a href="index.php" title="首页">首页</a></td>
          <td align="center" background="https://img.php.cn/upload/course/000/000/008/58215f29827c0755.jpg">
          <a href="index.php?proid=<?php echo urlencode('网页美工');?>" title="网页美工">网页美工</a></td>
          <td align="center" background="https://img.php.cn/upload/course/000/000/008/58215f29827c0755.jpg">
          <a href="index.php?proid=<?php echo urlencode('大数据');?>" title="大数据">大数据</a></td>
          <td align="center" background="https://img.php.cn/upload/course/000/000/008/58215f29827c0755.jpg">
          <a href="index.php?proid=<?php echo urlencode('asp编程');?>" title="asp编程">asp编程</a></td>
          <td align="center" background="https://img.php.cn/upload/course/000/000/008/58215f29827c0755.jpg">
          <a href="index.php?proid=<?php echo urlencode('php编程');?>" title="php编程">php编程</a></td>
          <td align="center" background="https://img.php.cn/upload/course/000/000/008/58215f29827c0755.jpg">
          <a href="index.php?proid=<?php echo urlencode('软件开发');?>" title="软件开发">软件开发</a></td>
          <td align="center" background="https://img.php.cn/upload/course/000/000/008/58215f29827c0755.jpg">
          <a href="landing.php"  title="用户登陆">用户登陆</a>&nbsp;&nbsp;
          </td>
        </tr>
      </table></td>
  </tr>
</table>

這裡把使用者的登出登入功能也加入其中:

<td align="center" background = "https://img.php.cn/upload/course/000/000/008/58215f29827c0755.jpg">
<a href="landing.php" title="用户登陆">用户登陆</a>&nbsp;&nbsp;
  <?php
  if ($_SESSION['id']){
    echo "<a href='landing.php?tj=out' title='退出'>退出</a>";
  }
  ?>
</td>

在登入功能頁面進行判斷

<?php
//初始化session
if(isset($_GET['tj']) == 'out'){
  session_destroy();
  echo "<script language=javascript>alert('退出成功!');window.location='landing.php'</script>";
}
?>


#
繼續學習
||
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <table width="" border="0" align="center" cellpadding="0" cellspacing="1" bgcolor="#CCCCCC" > <tr> <td bgcolor="#FFFFFF"><img src="http://img.php.cn/upload/course/000/000/008/58215f071f35b180.jpg" width="440" height="200" /></td> </tr> <tr> <td bgcolor="#FFFFFF"><table width="440" height="50" border="0" align="center" cellpadding="0" cellspacing="0"> <tr> <td align="center" background="http://img.php.cn/upload/course/000/000/008/58215f29827c0755.jpg"> <a href="index.php" title="首页">首页</a></td> <td align="center" background="http://img.php.cn/upload/course/000/000/008/58215f29827c0755.jpg"> <a href="index.php?proid=<?php echo urlencode('网页美工');?>" title="网页美工">网页美工</a></td> <td align="center" background="http://img.php.cn/upload/course/000/000/008/58215f29827c0755.jpg"> <a href="index.php?proid=<?php echo urlencode('大数据');?>" title="大数据">大数据</a></td> <td align="center" background="http://img.php.cn/upload/course/000/000/008/58215f29827c0755.jpg"> <a href="index.php?proid=<?php echo urlencode('asp编程');?>" title="asp编程">asp编程</a></td> <td align="center" background="http://img.php.cn/upload/course/000/000/008/58215f29827c0755.jpg"> <a href="index.php?proid=<?php echo urlencode('php编程');?>" title="php编程">php编程</a></td> <td align="center" background="http://img.php.cn/upload/course/000/000/008/58215f29827c0755.jpg"> <a href="index.php?proid=<?php echo urlencode('软件开发');?>" title="软件开发">软件开发</a></td> <td align="center" background="http://img.php.cn/upload/course/000/000/008/58215f29827c0755.jpg"> <a href="landing.php" title="用户登陆">用户登陆</a>   </td> </tr> </table></td> </tr> </table>