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codice:
 
PEAR
# yum install php-pear
Loading "installonlyn" plugin
.....
  Installing: php-pear                     ######################### [1/1]

Installed: php-pear.noarch 1:1.4.9-4
Complete!
[root@guinness testing]#

INSTALLO MDB2
# pear install MDB2
WARNING: channel "pear.php.net" has updated its protocols, use "channel-update pear.php.net" to update
downloading MDB2-2.4.1.tgz ...
Starting to download MDB2-2.4.1.tgz (119,790 bytes)
.................done: 119,790 bytes
install ok: channel://pear.php.net/MDB2-2.4.1
MDB2: Optional feature fbsql available (Frontbase SQL driver for MDB2)
MDB2: Optional feature ibase available (Interbase/Firebird driver for MDB2)
MDB2: Optional feature mysql available (MySQL driver for MDB2)
MDB2: Optional feature mysqli available (MySQLi driver for MDB2)
MDB2: Optional feature mssql available (MS SQL Server driver for MDB2)
MDB2: Optional feature oci8 available (Oracle driver for MDB2)
MDB2: Optional feature pgsql available (PostgreSQL driver for MDB2)
MDB2: Optional feature querysim available (Querysim driver for MDB2)
MDB2: Optional feature sqlite available (SQLite2 driver for MDB2)
To install use "pear install pear/MDB2#featurename"


PHP-MSSQL
# yum install php-mssql
Loading "installonlyn" plugin
.....
 Installing: unixODBC                     ######################### [1/3]
  Installing: freetds                      ######################### [2/3]
  Installing: php-mssql                    ######################### [3/3]

Installed: php-mssql.i386 0:5.1.6-15.el5.centos.1
Dependency Installed: freetds.i386 0:0.64-11.el5.centos unixODBC.i386 0:2.2.11-7.1
Complete!

MDB2#MSSQL
# pear install MDB2#mssql
Skipping package "pear/MDB2", already installed as version 2.4.1
downloading MDB2_Driver_mssql-1.2.1.tgz ...
Starting to download MDB2_Driver_mssql-1.2.1.tgz (29,471 bytes)
.........done: 29,471 bytes
install ok: channel://pear.php.net/MDB2_Driver_mssql-1.2.1