zend框架实现支持sql server的操作方法

本文实例讲述了zend框架实现支持sql server的操作方法。分享给大家供大家参考，具体如下：

1.修改zend/db/adapter/pdo/abstract.php中的connect方法

protected function _connect()
{
  // if we already have a pdo object, no need to re-connect.
  if ($this->_connection) {
    return;
  }
  // get the dsn first, because some adapters alter the $_pdotype
  $dsn = $this->_dsn();
  // check for pdo extension
  if (!extension_loaded('pdo')) {
    /**
     * [url=home.php?mod=space&uid=86763]@see[/url] zend_db_adapter_exception
     */
    require_once 'zend/db/adapter/exception.php';
    throw new zend_db_adapter_exception('the pdo extension is required for this adapter but the extension is not loaded');
  }
  // check the pdo driver is available
  if (!in_array($this->_pdotype, pdo::getavailabledrivers())) {
    /**
     * @see zend_db_adapter_exception
     */
    require_once 'zend/db/adapter/exception.php';
    throw new zend_db_adapter_exception('the ' . $this->_pdotype . ' driver is not currently installed');
  }
  // create pdo connection
  $q = $this->_profiler->querystart('connect', zend_db_profiler::connect);
  // add the persistence flag if we find it in our config array
  if (isset($this->_config['persistent']) && ($this->_config['persistent'] == true)) {
    $this->_config['driver_options'][pdo::attr_persistent] = true;
  }
  try {
    //print_r($this->_config);exit;
    if($this->_config['pdotype']=='sqlsrv'){
      $this->_connection = new pdo( "sqlsrv:server=".$this->_config['host'].";database = ".$this->_config['dbname'], $this->_config['username'], $this->_config['password']);
      $this->_connection->setattribute( pdo::attr_errmode, pdo::errmode_exception );
      $this->_connection->setattribute( pdo::sqlsrv_attr_encoding, pdo::sqlsrv_encoding_utf8 );
      $this->_profiler->queryend($q);
    }elseif ($this->_config['pdotype']=='dblib') {
      $this->_connection = new pdo(
        $dsn,
        $this->_config['username'],
        $this->_config['password'],
        $this->_config['driver_options']
      );
      $this->_profiler->queryend($q);
    }
    // set the pdo connection to perform case-folding on array keys, or not
    $this->_connection->setattribute(pdo::attr_case, $this->_casefolding);
    // always use exceptions.
    $this->_connection->setattribute(pdo::attr_errmode, pdo::errmode_exception);
  } catch (pdoexception $e) {
    /**
     * @see zend_db_adapter_exception
     */
    require_once 'zend/db/adapter/exception.php';
    throw new zend_db_adapter_exception($e->getmessage());
  }
}

这里针对linux和windows提供两种连接方式。

2.mssql.php 中的为 protected $_pdotype = 'sqlsrv';

protected function _dsn()
{
    // baseline of dsn parts
    $dsn = $this->_config;
    // don't pass the username and password in the dsn
    unset($dsn['username']);
    unset($dsn['password']);
    unset($dsn['driver_options']);
    if (isset($dsn['port'])) {
      $seperator = ':';
      if (strtoupper(substr(php_os, 0, 3)) === 'win') {
        $seperator = ',';
      }
      $dsn['host'] .= $seperator . $dsn['port'];
      unset($dsn['port']);
    }
    // this driver supports multiple dsn prefixes
    // @see http://www.php.net/manual/en/ref.pdo-dblib.connection.php
    //print_r($dsn);exit;
    if (isset($dsn['pdotype'])) {
      switch (strtolower($dsn['pdotype'])) {
        case 'freetds':
        case 'sybase':
          $this->_pdotype = 'sybase';
          break;
        case 'mssql':
          $this->_pdotype = 'mssql';
          break;
        case 'sqlsrv':
          $this->_pdotype = 'sqlsrv';
          break;
        case 'dblib':
        default:
          $this->_pdotype = 'dblib';
          break;
      }
      unset($dsn['pdotype']);
    }
    // use all remaining parts in the dsn
    foreach ($dsn as $key => $val) {
      $dsn[$key] = "$key=$val";
    }
    $dsn = $this->_pdotype . ':' . implode(';', $dsn);
   // print_r($dsn);exit;
    return $dsn;
}

3.zf 的web.xml 数据库配置文件改成：

<db>
  <adapter>pdo_mssql</adapter>
<config>
    <host>localhost</host>
    <username>sa</username>
    <password>123456</password>
    <dbname>testdb </dbname>
    <pdotype>sqlsrv</pdotype>
  </config>
</db>

期间遇到中文乱码问题

function convert2utf8($string)
{
    $config = $this->getcfg();
    $pdotype = $config->db->config->pdotype;
    if($pdotype == 'dblib'){
      return iconv("gbk","utf-8",$string);
    }elseif($pdotype == 'sqlsrv'){
      return mb_convert_encoding($string,"utf-8","auto");
    }
}
function convert2gbk($string)
{
    $config = $this->getcfg();
    $pdotype = $config->db->config->pdotype;
    if($pdotype == 'dblib'){
      return iconv("utf-8","gbk",$string);
    }elseif($pdotype == 'sqlsrv'){
      return mb_convert_encoding($string,"gbk","auto");
    }
}
protected function &getcfg() {
    if ($this->cfg_ === null) {
      $registry = zend_registry::getinstance();
      $this->cfg_ = $registry->get('web_config');
    }
    return $this->cfg_;
} 

针对不同的类型，进行不同的处理。

更多关于zend相关内容感兴趣的读者可查看本站专题：《zend framework框架入门教程》、《php优秀开发框架总结》、《yii框架入门及常用技巧总结》、《thinkphp入门教程》、《php面向对象程序设计入门教程》、《php+mysql数据库操作入门教程》及《php常见数据库操作技巧汇总》

希望本文所述对大家基于zend framework框架的php程序设计有所帮助。