zend支持sql server

1.修改Zend下Db下Adapter下Pdo下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。