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Linux平臺使用Freetds連線SQL Server伺服器,相容PHP和Laravel

本文在CentOS 7 64bit和Laravel 4.2環境測試通過。

1.下載原始碼並解壓縮

wget ftp://ftp.freetds.org/pub/freetds/stable/freetds-stable.tgz
tar zxvf freetds-stable.tgz 
cd freetds-0.91

2.配置並生成makefile

./configure --with-tdsver=8.0 --enable-msdblib 

3.編譯安裝

make
sudo make install

4.配置

預設安裝的配置檔案位於/usr/local/etc,在/usr/local/etc編輯freetds.conf 檔案,預設為

#   $Id: freetds.conf,v 1.12 2007/12/25 06:02:36 jklowden Exp $
#
# This file is installed by FreeTDS if no file by the same 
# name is found in the installation directory.  
#
# For information about the layout of this file and its settings, 
# see the freetds.conf manpage "man freetds.conf".  

# Global settings are overridden by those in a database
# server specific section
[global]
        # TDS protocol version
;       tds version = 4.2

        # Whether to write a TDSDUMP file for diagnostic purposes
        # (setting this to /tmp is insecure on a multi-user system)
;       dump file = /tmp/freetds.log
;       debug flags = 0xffff

        # Command and connection timeouts
;       timeout = 10
;       connect timeout = 10

        # If you get out-of-memory errors, it may mean that your client
        # is trying to allocate a huge buffer for a TEXT field.  
        # Try setting 'text size' to a more reasonable limit 
        text size = 64512

# A typical Sybase server
[egServer50]
        host = symachine.domain.com
        port = 5000
        tds version = 5.0

# A typical Microsoft server
[egServer70]
        host = ntmachine.domain.com
        port = 1433
        tds version = 7.0

在檔案的最後位置新增如下配置,即可連線SQL Server 2000

[sql-server-2000]
        host = 192.168.182.9
        port = 1433
        tds version = 7.0

如果要連線SQL Server 2005或2008,需要新增以下配置

[sql-server-2005]
        host = 192.168.70.1
        port = 1433
        tds version = 8.0


4.測試

/usr/local/bin/tsql -S sql-server-2000 -U sa -P test 

如果成功連線,將會出現以下提示
locale is "zh_CN.UTF-8"
locale charset is "UTF-8"
using default charset "UTF-8"
1>
至此,FreeTDS已經是Linux具備連線SQL Server的功能了。

5.編譯PHP擴充套件

PHP 5.4之後已經沒有原生支援的SQL Server的驅動了,因此需要手動編譯PHP原始碼的擴充套件新增對SQL Server的驅動支援。CentOS 7自帶的是5.4版本的PHP,因此我們通過編譯5.4版的PHP原始碼獲得擴充套件。

目前CentOS yum源裡最新的php是5.4.16,php可以通過yum安裝到系統

sudo yum install php php-devel php-fpm php-common php-mysql php-pdo libzip

php官網上最新的5.4版本是 5.4.39,下載原始碼到本地

 wget http://cn2.php.net/distributions/php-5.4.39.tar.gz

解壓並進入擴充套件目錄
tar zxvf php-5.4.39.tar.gz
cd php-5.4.39/ext/mssql
使用phpize生成configure指令碼檔案
phpize


生成makefile
./configure

編譯
make

編譯之後將會在modules子目錄生成mssql.so擴充套件檔案。複製擴充套件檔案到php的擴充套件檔案目錄
sudo cp modules/mssql.so /usr/lib64/php/modules/
在/etc/php.d目錄下新建mssql.ini 檔案,輸入以下內容
; Enable mssql extension module
extension=mssql.so

這樣PHP就能載入SQL Server驅動了。使用如下程式碼測試PHP連線SQL Server。
<?php
header("Content-type: text/html; charset=utf-8");

$msdb=mssql_connect("sql-server-2000","sa","test");
if (!$msdb) {
        echo "connect sqlserver error";
        exit;     
}

mssql_select_db("msdb",$msdb);
$result = mssql_query("SELECT top 5 * FROM employee", $msdb);
while($row = mssql_fetch_array($result)) {
        var_dump($row);
}

mssql_free_result($result);
?>

程式碼中的資料庫配置資訊可以替換成別的。測試命令如下

php -f test-mssql.php 

成功執行後將會打印出資料庫表中記錄資料。

目前原生PHP程式碼已經可以連線SQL Server了,但是Laravel還是不行,還需要再編譯生成一個pdo_dblib.so擴充套件驅動。

6.編譯pdo_dblib.so擴充套件適配Laravel

cd php-5.4.39/ext/pdo_dblib
./configure
make
sudo cp modules/pdo_dblib.so /usr/lib64/php/modules/

再到/etc/php.d下新建pdo_dblib.ini,輸入以下內容

; Enable pdo_dblib extension module
extension=pdo_dblib.so

再編輯Laravel的app/config/database.php檔案,將sqlsrv區域改為一下形式

'sqlsrv' => array(
                        'driver'   => 'sqlsrv',
                        'host'     => 'sql-server-2000',
                        'database' => 'msdb',
                        'username' => 'sa',
                        'password' => 'test',
                        'prefix'   => '',
                ),

這樣Laravel也可以連線SQL Server了。