The pdo of mssql is not displayed in php.

Php does not show that mssql pdo is such a server: & nbsp; window & nbsp; server & nbsp; 2008db: mmsql & nbsp; 2003PHP: 5.2.6 my php ext also contains all the dll of php_pdo_mssql.dll and php. ini is also enabled. the pdo php in my phpinfo does not display the pdo of mssql.
Yes.
Server: window server 2008
Db: mmsqls 2003
PHP: 5.2.6
In my php ext, all dll of php_pdo_mssql.dll is also available, and php. ini is also enabled. in my phpinfo pdo driver, only mysql and oracle are available.
There is no mssql,
I am so angry.
------ Best solution --------------------
Check the error log. Modules that cannot be loaded will be displayed in the log
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Otherwise, rewrite a class and map the pdo method to odbc.
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PHP: 5.2.6 ???
Is his PDO usable?
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Reference:

PHP: 5.2.6 ???
Is his PDO usable?

Big Brother, I don't understand. Isn't this edition usable? Please advise? What kind of knowledge should I search. Thank you.
------ Other solutions --------------------
Reference:

Check the error log. Modules that cannot be loaded will be displayed in the log

In this case, my server A can use PHP to remotely operate odbc server B's database mssql.
However, thinkPHP can only use pdo to operate mssql.

What should I do?
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Reference:

Otherwise, rewrite a class and map the pdo method to odbc.

I have no idea at all. big brother, please remind me. thank you.
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Class fakePDO {
Function prepare ($ SQL ){
// Write the implementation of the pdo prepare here
}
Function bind ($ SQL ){
// Same as above
}
.........
}