//php版本 > 7
$ wget http://pear.php.net/go-pear.phar
$ php go-pear.phar
//php版本 < 7
$ yum install php-pear
//否则会报错PHP Parse error: syntax error, unexpected //'new' (T_NEW) in /usr/share/pear/PEAR/Frontend.php on //line 91

$ sudo pecl install swoole
//报错如下
//Warning: Invalid argument supplied for foreach() in //Command.php on line 249
vi `which pecl`
//找到最后一行
exec $PHP -C -n -q $INCARG -d date.timezone=UTC -d output_buffering=1 -d variables_order=EGPCS -d safe_mode=0 -d register_argc_argv="On" $INCDIR/peclcmd.php "$@"
去掉 -n 标示
//报错如下
//running: phpize
//Can't find PHP headers in /usr/include/php
//安装 php-devel
sudo yum install php70w-devel
成功！
//Build process completed successfully
//Installing '/usr/lib64/php/modules/swoole.so'
//install ok: channel://pecl.php.net/swoole-1.9.8

$ php -i | grep php.ini
//修改或者添加
 extension=swoole.so

$ sudo ./pecl install msgpack
//pecl/yar requires PHP (version >= 5.2.0, version <= 5.6.99), installed version is 7.0.16
//注意PHP7,要使用yar-2.0.2
$ sudo ./pecl install yar-2.0.2 //注意yar-2.0.2版本
//添加，json.so 要放到前面。否则会报
//PHP Warning: PHP Startup: Unable to load dynamic library '/usr/lib64/php/modules/yar.so' - /usr/lib64/php/modules/yar.so: undefined symbol: php_json_decode_ex in Unknown on line 0
extension=json.so //放前面
extension=msgpack.so
extension=yar.so
//重启php服务
sudo systemctl restart php-fpm.service
//其他报错
//perl: warning: Setting locale failed.
//perl: warning: Please check that your locale //settings:
// LANGUAGE = (unset),
// LC_ALL = (unset),
 // LANG = "en_US.UTF-8"
 
$ localedef -v -c -i en_US -f UTF-8 en_US.UTF-8
//其他报错
//checking for cURL in default path... not found
//configure: error: Please reinstall the libcurl distribution - easy.h should be in <curl-dir>/include/curl/
$ sudo yum -y install curl-devel
//安装Yaf
$ sudo ./pecl install yaf
//更新php.ini
extension=yaf.so
//重启服务
$ sudo systemctl restart php-fpm.service
//安装脚手架
$ git clone http://pecl.php.net/package/yaf
$ cd php-yaf/tools/cg
$ php yaf-cg app
//配置 项目目录指向 app/index.php
//访问配置host

server {
 listen ****;
 server_name domain.com;
 root document_root;
 index index.php index.html index.htm;
 
 if (!-e $request_filename) {
 rewrite ^/(.*) /index.php/$1 last;
 }
}