title: Cant use already installed MDB2
body: <p>I installed Pear with the following command:</p>
  
  <pre><code>sudo apt-get install php-pear
  </code></pre>
  
  <p>Now <code>Pear list</code> gives the following output:</p>
  
  <pre><code>Installed packages, channel pear.php.net:
  =========================================
  Package          Version State
  Archive_Tar      1.3.7   stable
  Console_Getopt   1.3.0   stable
  PEAR             1.9.4   stable
  Structures_Graph 1.0.4   stable
  XML_Util         1.2.1   stable
  </code></pre>
  
  <p>Next I installed MDB2 with the following command: <code>pear install MDB2</code></p>
  
  <pre><code>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)
  MDB2: To install optional features use "pear install pear/MDB2#featurename"
  </code></pre>
  
  <p>Then I  included MDB2.php in one of my program using <code>require_once('MDB2.php')</code> , but I got these errors during runtime:</p>
  
  <pre><code>Warning: require_once(MDB2.php) [function.require-once]: failed to open stream: No such file or directory in /opt/lampp/htdocs/xampp/php/php_crash/phptomysql/connect.php on line 80
  
  Fatal error: require_once() [function.require]: Failed opening required 'MDB2.php' (include_path='.:/opt/lampp/lib/php') in /opt/lampp/htdocs/xampp/php/php_crash/phptomysql/connect.php on line 80
  </code></pre>
  
  <p>It is clearly indicating that <code>MDB2.php is missin</code>g. I have not included any file name <code>MDB2.php</code> in my current directory. I am assuming it is some sort of global available anywhere.</p>
  
  <p>How to solve this? I also tried this:   <code>sudo pear install MDB2_Driver_$mysql</code></p>
  
  <p>I got his message for the above command: </p>
  
  <pre><code>No releases available for package "pear.php.net/MDB2_Driver_"
  install failed
  </code></pre>