解决SQL server不支持utf8，php却用utf8的矛盾问题

function convert2utf8($string)
    {
        return iconv("gbk","utf-8",$string);
    }
    function convert2gbk($string)
    {
        return iconv("utf-8","gbk",$string);
    }

当插入数据，或修改数据的时候，把utf-8，转为gbk，存入数据库。

当获取数据的时候，将数据转为utf-8。

这个方法在底层的数据中设计，上层调用即可。

<?php

class dao_dao extends Zend_Db_Table {

    public function returnDb(){
        return $db = &$this->getAdapter();
    }

    public function getData($table,$where = false, $order = 'id ASC', $pagesize = false, $offset = false, $count = false, $from = false, $join = false, $group = false) {
        $db = &$this->getAdapter();
        $select = $db->select();
        
        if ($where && is_array($where)) {
            foreach ($where as $key => $val) {
                //print_r($where);
                if($val['type']==1){
                    $select->where($key, $val['val']);
                }else{
                    $select->orwhere($key, $val['val']);
                }
               
            } 
        }

        if (!$from)
            $from = '*';
        //echo $select."<br/>";
        if ($pagesize) {
            $select->limit($pagesize, $offset);
        }
        //echo $select."<br/>";
        if (is_array($order)) {
            foreach ($order as $value) {
                $select->order($value);
            }
        } else {
            $select->order($order);
        }
        //echo $select."<br/>";
        $select->from($table, $count ? "COUNT(".$table.".id)" : $from);
        
        if (is_array($group)) {
            foreach ($group as $key => $val) {
                $select->group($val);
            }

            if ($count) {
                $result = $db->fetchAll($select);
                //echo $select."<br/>";
                return $result;
            }
        } else {
            if ($count) {
                $result = $db->fetchOne($select);
                //echo $select."<br/>";
                return $result;
            }
        }
        if (is_array($join)) {
            foreach ($join as $key => $val) {
                $select->join($key, $val[0], $val[1]);
            }
        }

       //echo $select."<br/>";

        //echo $select;exit;
        
        $result = $db->fetchAll($select);
        foreach ($result as $key => $value) {
            foreach ($value as $key2 => $value2) {
                $result[$key][$key2] = $this->convert2utf8($value2);
            }
        }
        return $result;
    }
    
    


    /**
     * 向表中插入数据
     * array $adata  数据
     * string $table 表名
     * int $insterid 是否需要返回插入ID
     * @return true or false or int
     */
     // @bianding 2013.11.04 更改了pdo中mssql.php的lastInsertId()函数
     // @bianding 2013.11.04 经测试 mssql.php中的lastInsertId()函数中的SELECT两种方式都行
    function SaveData($adata, $table, $insterid = 0, $aLog = false) {
        $db = & $this->getAdapter();
        foreach ($adata as $key => $value) {
            $adata[$key] = $this->convert2gbk($value);
        }
        if ($db->insert($table, $adata)) {
            //var_dump($db->getProfiler());
            $insertedID = $db->lastInsertId();            
            if ($insterid) {
                return $insertedID;
            } else {
                return TRUE;
            }
        } else {
            return false;
        }
    }

    /**
     * 删除表中数据
     * 
     * @param string $table 表名
     * @param string $where 'id ='.$id 条件
     * @return true or false
     */
    function DelData($table, $where, $aLog = false) {
        $db = & $this->getAdapter();
        if ($db->delete($table, $where)) {
            return TRUE;
        } else {
            return FALSE;
        }
    }

    /**
     * 更新表中数据
     *
     * @param string $table
     * @param array $adata
     * @param string $where 'id ='.$id
     * @return true or false
     */
    function UpdateData($table, $adata, $cond, $aLog = false) {
        $db = & $this->getAdapter();
        foreach ($adata as $key => $value) {
            $adata[$key] = $this->convert2gbk($value);
        }
        if ($db->update($table, $adata, $cond)) {
            return TRUE;
        } else {
            return false;
        }
    }


    public function clearTable($table) {
        $db = &$this->getAdapter();
        $result = $db->query('TRUNCATE TABLE ' . $table);
    }

    public function executeSql($strSql) {
        $db = &$this->getAdapter();
        $result = $db->query($strSql);
    }
    
    function convert2utf8($string)
    {
        return iconv("gbk","utf-8",$string);
    }
    function convert2gbk($string)
    {
        return iconv("utf-8","gbk",$string);
    }
}