我不确定pecl.php.net是否已关闭或者其他什么，但这个包仍然存在？还是停产了？ 我正在运行以下命令：
sudo pecl channel-update pecl.php.net
sudo pecl install trader
我得到以下输出：
Updating channel "pecl.php.net"
Channel "pecl.php.net" is not responding over http://, failed with
message: Connection to `pecl.php.net:80' failed: Connection timed out
Trying channel "pecl.php.net" over https:// instead
Channel "pecl.php.net" is up to date
No releases available for package "pecl.php.net/trader"
install failed