Warning: require_once(PEAR.php) [function.require-once]: failed to open stream: No such file or directory in E:\myweb\webapi\webapi\pear\DB\common.php on line 30

Fatal error: require_once() [function.require]: Failed opening required 'PEAR.php' (include_path='.;C:\php5\pear') in E:\myweb\webapi\webapi\pear\DB\common.php on line 30