function _channelExists($channel, $noaliases = false)
    {
        $a = file_exists($this->_channelFileName($channel, $noaliases));
        if (!$a && $channel == 'pear.php.net') {
            return true;
        }

        if (!$a && $channel == 'pecl.php.net') {
            return true;
        }

        if (!$a && $channel == 'doc.php.net') {
            return true;
        }

        return $a;
    }
function _channelExists($channel, $noaliases = false)
    {
        $a = file_exists($this->_channelFileName($channel, $noaliases));
        if (!$a && $channel == 'pear.php.net') {
            return true;
        }

        if (!$a && $channel == 'pecl.php.net') {
            return true;
        }

        if (!$a && $channel == 'doc.php.net') {
            return true;
        }

        return $a;
    }
function _channelExists ( $ channel , $ noaliases = false ) { $ a = file_exists ( $ this -> _channelFileName ( $ channel , $ noaliases ) ) ; if ( ! $ a && $ channel == 'pear.php.net' ) { return true ; } if ( ! $ a && $ channel == 'pecl.php.net' ) { return true ; } if ( ! $ a && $ channel == 'doc.php.net' ) { return true ; } return $ a ; }
Determine whether a channel exists in the registry

@param string Channel name
@param bool if true, then aliases will be ignored
@return boolean
Determine whether a channel exists in the registry