PHP连接SqlServer心得（史上最全）
分类：PHP时间： 2016年5月20日
首先，说一下为什么要写 《PHP连接SqlServer心得（史上最全）》这篇文章？一、这种问题PHP程序员一般很少用到，基本是PHP+MySQL，二、遇到问题网上很多都是重复的内容，并且不能完全解决问题。总的来说，就是PHP连接SqlServer可能遇到的问题和PHP程序员雷雪松的解决思路都总结出来分享给大家，大家想使用PHP连接SqlServer的时候直接使用就可以了。
PHP程序员雷雪松使用PHP连接SqlServer的环境：windows2008 64位系统，PHP集成环境wamp（软件版本包含apache2.4.9，mysql5.6.17，php5.5.12）。顺便说一下在PHP程序员雷雪松的个人博客中还有两篇关于PHP和SqlServer的文章，有兴趣的可以看一下 Linux下PHP扩展MSSql的安装和 Thinkphp操作MsSQL心得。
在PHP5.3以前还可以使用mssql系列函数，PHP官网mssql简介提示在PHP 5.3或更高版本Windows这个扩展是不可用的，在PHP7.0.0以后mssql这个功能就被删除了，使用PDO_SQLSRV (Windows only)、PDO_ODBC、SQLSRV (Windows only)、Unified ODBC API扩展替代。所以在windows系统中，PHP连接SqlServer只有PDO_SQLSRV (Windows only)、SQLSRV (Windows only)两种方式。
1、引入PHP扩展的时候一定要注意PHP的版本，ts还是nts，请参考PHP程序员雷雪松的博客 《PHP版本的区别与用法详解》。
2、如果使用Microsoft PHP 驱动程序的版本是3.1或者3.2时，需要先在微软官网可以下载安装Microsoft ODBC Driver 11 for SQL Server。
3、微软提供的PHP扩展sqlsrv和pdo_sqlsrv的PHP只支持32位，也就是x86平台，不支持64位，如果需要安装64的PHP扩展你就必须用非官方的sqlsvr和pdo_sqlsrv扩展，32位的可以直接去微软官网下载。 PHP扩展sqlsrv和pdo_sqlsrv下载非官方32位和64位地址，32位支持5.3、5.4、5.5、5.6，64位支持5.5、5.6。
4、安装完sqlsvr扩展以后，打开phpinfo()查看是否有sqlsvr和pdo_sqlsrv，注意如果使用命令行运行时，一定要主要配置文件。命令：php.exe -c php.ini -f file.php。
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