Warning: require_once(PEAR.php) [function.require-once]: failed to open stream: No such file or directory in /work/wdbi/php/wdbi.php on line 15

Fatal error: require_once() [function.require]: Failed opening required 'PEAR.php' (include_path='.:/usr/share/php:/usr/share/pear') in /work/wdbi/php/wdbi.php on line 15