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php在数据库抽象层简单使用PDO的方法_PHP

WBOY
WBOYOriginal
2016-05-29 11:48:13929browse

本文实例讲述了php在数据库抽象层简单使用PDO的方法。分享给大家供大家参考,具体如下:

测试代码如下:

<&#63;php
/**************************
@Filename: pdotest.php
@Content : PDO操作MySQL,Access(测试)
**************************/
if($_GET['db'] == 'mysql')
{
  $dns = 'mysql:host=localhost;dbname=test';
  $dbuser = 'root';
  $dbpass = 'root';
  $db = new PDO($dns,$dbuser,$dbpass);
}
else
{
  $db = new PDO("odbc:Driver={Microsoft Access Driver (*.mdb)};Dbq=".getcwd()."//test.mdb");
}
if($_POST['reg'])
{
  $db->exec("INSERT INTO t_user (name,email) VALUES ('".$_POST['name']."','".$_POST['email']."') ;");
  // header('Location:'.$_SERVER['PHP_SELF']);
  &#63;>
  <a href="pdotest.php">返回</a>
  <&#63;
}
else
{
  $html = '
<div id="new">
  <form action="'.$_SERVER['REQUEST_URI'].'" method="post">
   Name: <input type="text" name="name" size="10" />
  Email: <input type="text" name="email" size="15" />
  <input type="submit" name="reg" value="Register" />
  </form>
</div>
';
  $re = $db->query("SELECT uid,name,email FROM t_user ORDER BY email ;");
  while($rs = $re->fetch())
  {
    $userlisthtml .= '
<tr><td>'.$rs['uid'].'</td><td>'.$rs['name'].'</td><td>'.$rs['email'].'</td></tr>';
  }
  $html .= '
<div id="list">
  <table border="1">
  <caption>User List</caption>
  <thead>
    <tr><th>ID</th><th>Name</th><th>Email</th></tr>
  </thead>
  <tbody>'.$userlisthtml.'
  </tbody>
  </table>
</div>
';
}
echo $html;
&#63;>

测试环境:

php.ini文件:  打开  extension=php_pdo_odbc.dll  去掉分号 打开aceess数据库驱动

mysql 默认打开的

访问路径:

mysql数据库

http://192.168.1.21/lava_guess2009/test/pdo/pdotest.php?db=mysql

aceess 数据库

http://192.168.1.21/lava_guess2009/test/pdo/pdotest.php

特点:  使用不同数据库只要改动连接驱动即可,代码不用作任何改变,也就是抽象层的好处.

希望本文所述对大家php程序设计有所帮助。

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