对于PHP不同版本的需求，PHP程序员都最清楚不过了。
WampServer的Version菜单（Apache、PHP、Mysql各自有一个Version菜单）上，有一个 Get More... 连接，点击它就可以到官网上下载你需要的版本，安装是自动化的，非常简单。但是，到我写本文为止，官网的PHP5.2最高为5.2.11，PHP5.3最高为5.3.1。5.2最稳定的5.2.17、5.3最新的5.3.8都没有提供，而且更新非常慢。没有我们需要的版本，怎么办？毛大爷说过一句至理名言：自己动手，丰衣足食！
手工安装新版本的PHP，只需以下步骤：
下载要安装的PHP版本。既然是用WampServer，那当然是下载Window版本的ZIP包啦：http://windows.php.net。解压到 Wamp的安装目录\bin\php\php5.2.17。这里以5.2.17为例。
进入 Wamp的安装目录\bin\php\php5.2.17 目录，从 php.ini-dist 或者 php.ini-recommended 复制一份，重命名为php.ini，适应修改php.ini配置（如extension_dir），再从php.ini复制一分，重命名为 phpForApache.ini。
从已有的版本目录中复制一份 wampserver.conf。比如我安装WampServer的时候已经有php5.3.0，在 Wamp的安装目录\bin\php\php5.3.0 目录下复制 wampserver.conf 到 Wamp的安装目录\bin\php\php5.2.17。
修改Wamp配置文件：进入 Wamp的安装目录，用IDE或记事本（最好使用行号定位的记事本，如EditPlus等）打开 wampmanager.ini，定位到 335 行，通常在这一行就是[phpVersion]，如果不是，则在附近找找。复制下面一行：
Type: item; Caption: "5.3.0"; Action: multi; Actions:switchPhp5.3.0
插入到这一行前面，并修改为
Type: item; Caption: "5.2.17"; Action: multi; Actions:switchPhp5.2.17
再复制
[switchPhp5.3.0]
Action: service; Service: wampapache; ServiceAction: stop; Flags: ignoreerrors waituntilterminated
Action: run; FileName: "Wamp的安装目录/bin/php/php5.3.0/php-win.exe";Parameters: "switchPhpVersion.php 5.3.0";WorkingDir: "Wamp的安装目录/scripts"; Flags: waituntilterminated
Action: run; FileName: "Wamp的安装目录/bin/php/php5.3.0/php-win.exe";Parameters: "-c . refresh.php";WorkingDir: "Wamp的安装目录/scripts"; Flags: waituntilterminated
Action: run; FileName: "net"; Parameters: "start wampapache"; ShowCmd: hidden; Flags: waituntilterminated
Action: resetservices
Action: readconfig;
插入这一段之前，并修改为
[switchPhp5.2.17]
Action: service; Service: wampapache; ServiceAction: stop; Flags: ignoreerrors waituntilterminated
Action: run; FileName: "Wamp的安装目录/bin/php/php5.3.0/php-win.exe";Parameters: "switchPhpVersion.php 5.2.17";WorkingDir: "Wamp的安装目录/scripts"; Flags: waituntilterminated
Action: run; FileName: "Wamp的安装目录/bin/php/php5.3.0/php-win.exe";Parameters: "-c . refresh.php";WorkingDir: "Wamp的安装目录/scripts"; Flags: waituntilterminated
Action: run; FileName: "net"; Parameters: "start wampapache"; ShowCmd: hidden; Flags: waituntilterminated
Action: resetservices
Action: readconfig;
退出WampServer，再重启。完成。
通过这5步，即可完成PHP任意版本的安装。
另附两个文件的实例：
1. Wamp的安装目录\bin\php\php5.2.17\wampserver.conf，这实际是PHP文件
<?php
$phpConf['phpIniDir'] = '.';
$phpConf['phpExeDir'] = '.';
$phpConf['phpConfFile'] = 'php.ini';
$phpConf['apache']['1.3']['LoadModuleName'] = 'php5_module';
$phpConf['apache']['1.3']['LoadModuleFile'] = 'php5apache.dll';
$phpConf['apache']['1.3']['AddModule'] = 'mod_php5.c';
$phpConf['apache']['2.0']['LoadModuleName'] = 'php5_module';
$phpConf['apache']['2.0']['LoadModuleFile'] = 'php5apache2.dll';
$phpConf['apache']['2.0']['AddModule'] = '';
$phpConf['apache']['2.2']['LoadModuleName'] = 'php5_module';
$phpConf['apache']['2.2']['LoadModuleFile'] = 'php5apache2_2.dll';
$phpConf['apache']['2.2']['AddModule'] = '';
?>
2. Wamp的安装目录\wampmanager.ini
[phpVersion]
;WAMPPHPVERSIONSTART
Type: item; Caption: "5.2.17"; Action: multi; Actions:switchPhp5.2.17; Glyph: 13
Type: item; Caption: "5.3.0"; Action: multi; Actions:switchPhp5.3.0
Type: separator;
Type: item; Caption: "Get more..."; Action: run; FileName: "C:\Program Files (x86)\Mozilla Firefox\firefox.exe"; Parameters: "http://www.wampserver.com/addons_php.php";
[switchPhp5.2.17]
Action: service; Service: wampapache; ServiceAction: stop; Flags: ignoreerrors waituntilterminated
Action: run; FileName: "D:/programs/wamp/bin/php/php5.3.0/php-win.exe";Parameters: "switchPhpVersion.php 5.2.17";WorkingDir: "D:/programs/wamp/scripts"; Flags: waituntilterminated
Action: run; FileName: "D:/programs/wamp/bin/php/php5.3.0/php-win.exe";Parameters: "-c . refresh.php";WorkingDir: "D:/programs/wamp/scripts"; Flags: waituntilterminated
Action: run; FileName: "net"; Parameters: "start wampapache"; ShowCmd: hidden; Flags: waituntilterminated
Action: resetservices
Action: readconfig;
[switchPhp5.3.0]
Action: service; Service: wampapache; ServiceAction: stop; Flags: ignoreerrors waituntilterminated
Action: run; FileName: "D:/programs/wamp/bin/php/php5.3.0/php-win.exe";Parameters: "switchPhpVersion.php 5.3.0";WorkingDir: "D:/programs/wamp/scripts"; Flags: waituntilterminated
Action: run; FileName: "D:/programs/wamp/bin/php/php5.3.0/php-win.exe";Parameters: "-c . refresh.php";WorkingDir: "D:/programs/wamp/scripts"; Flags: waituntilterminated
Action: run; FileName: "net"; Parameters: "start wampapache"; ShowCmd: hidden; Flags: waituntilterminated
Action: resetservices
Action: readconfig;
;WAMPPHPVERSIONEND
如果要复制以上文件，注意更改版本号与路径。
