These extensions have been moved to PECL and are no longer part of the PHP distribution. The PECL package versions of these extensions will be created according to user demand.
Hash does NOT fully implement mhash. Notably Joomla has 2 lines in helper.php that use an unsupported function: mhash_keygen_s2k(,,,).
Other functions of mhash can be rewritten:
<?php
echo bin2hex(mhash(MHASH_RIPEMD160 ,"my_password"));
echo hash("ripemd160" ,"my_password");
?>
MSsqlserverDriver does not support mssql-functions but sqlsrv-functions.
If you do not want to change all of your php-scripts for using other functions and another function-handling of db-connection-parameters you should use freeTDS for Windows (download for example at moodle.org) and php_dblib.dll.
I hope this helps others with MS-Systems.
The MSSQL extension is no longer present in the 5.3.0 release, but this fact is not mentioned on this page. Perhaps that should be added.
It seems that the recommended solution is to use "SQL Server Driver for PHP" by Microsoft (http://www.microsoft.com/sqlserver/2005/en/us/php-driver.aspx). However, it is reported that the current release (v1.0) does not support PHP 5.3.0 (see http://forums.iis.net/t/1158918.aspx). Apparently, v1.1 will support PHP 5.3, but it is currently in CTP release.