$ wget 'http://php.net/distributions/php-7.1.16.tar.gz'
$ tar xf php-7.1.16.tar.gz
$ cd php-7.1.16

$ ./configure --prefix=/path/to/php --enable-embed
$ make && make install

$ git clone https://github.com/rryqszq4/ngx_php7.git

$ wget 'http://nginx.org/download/nginx-1.10.3.tar.gz'
$ tar -zxvf nginx-1.10.3.tar.gz
$ cd nginx-1.10.3

$ export PHP_CONFIG=/path/to/php/bin/php-config
$ export PHP_BIN=/path/to/php/bin
$ export PHP_INC=/path/to/php/include/php
$ export PHP_LIB=/path/to/php/lib

$ ./configure --user=www --group=www \
$             --prefix=/path/to/nginx \
$             --with-ld-opt="-Wl,-rpath,$PHP_LIB" \
$             --add-module=/path/to/ngx_php7/third_party/ngx_devel_kit \
$             --add-module=/path/to/ngx_php7

user www www;
worker_processes  4;

events {
    worker_connections  1024;
}

http {
    include       mime.types;
    default_type  application/octet-stream;

    keepalive_timeout  65;
    
    client_max_body_size 64k;   
    client_body_buffer_size 64k;

    php_ini_path /usr/local/php/etc/php.ini;

    server {
        listen       80;
        server_name  localhost;
        default_type 'application/json; charset=UTF-8';
    
        location /php {
            content_by_php '
                echo "hello ngx_php7";
            ';
        }

        location = /ngx_request {
            content_by_php '
                echo ngx_request::document_uri();
            ';
        }

        # curl /ngx_get?a=1&b=2
        location = /ngx_get {
            content_by_php '
                echo "ngx::query_args()\n";
                var_dump(ngx::query_args());
            ';
        }

        # curl -d 'a=1&b=2' /ngx_post
        location = /ngx_post {
            content_by_php '
                echo "ngx::post_args()\n";
                var_dump(ngx::post_args());
            ';
        }

        location = /ngx_sleep {
            content_by_php '
                echo "ngx_sleep start\n";
                yield ngx::sleep(1);
                echo "ngx_sleep end\n";
            ';
        }

        location = /ngx_socket {
            default_type 'application/json;charset=UTF-8';
            content_by_php '
                yield ngx_socket::connect("hq.sinajs.cn", 80);
                yield ngx_socket::send("GET /list=s_sh000001 HTTP/1.0\r\n
                                        Host: hq.sinajs.cn\r\nConnection: close\r\n\r\n");
                yield $ret = ngx_socket::recv(1024);
                yield ngx_socket::close();

                var_dump($ret);
            ';
        }

        location = /ngx_socket2 {
            default_type 'application/json;charset=UTF-8';
            content_by_php '
                $fd = ngx_socket_create();
                var_dump($fd);
                yield ngx_socket_connect($fd, "hq.sinajs.cn", 80);
                $send_buf = "GET /list=s_sh000001 HTTP/1.0\r\n
                                            Host: hq.sinajs.cn\r\nConnection: close\r\n\r\n";
                yield ngx_socket_send($fd, $send_buf, strlen($send_buf));
                $recv_buf = "";
                yield ngx_socket_recv($fd, $recv_buf);
                var_dump($recv_buf);
                yield ngx_socket_close($fd);
            ';
        }

        location = /ngx_var {
            set $a 1234567890;
            content_by_php '
                $a = ngx_var::get("a");
                var_dump($a);
            ';
        }

    }
}

ngx_php7 test ...
nginx version: nginx/1.10.3
built by gcc 4.8.4 (Ubuntu 4.8.4-2ubuntu1~14.04.3) 
configure arguments: --prefix=/home/travis/build/rryqszq4/ngx_php7/build/nginx --with-ld-opt=-Wl,-rpath,/home/travis/build/rryqszq4/ngx_php7/build/php/lib --add-module=../../../ngx_php7/third_party/ngx_devel_kit --add-module=../../../ngx_php7
t/001-hello.t ........... ok
t/002-ini.t ............. ok
t/004-ngx_request.t ..... ok
t/005-ngx_log.t ......... ok
t/006-ngx_sleep.t ....... ok
t/007-ngx_socket.t ...... ok
t/008-ngx_exit.t ........ ok
t/009-ngx_query_args.t .. ok
t/010-ngx_post_args.t ... ok
t/011-ngx_constants.t ... ok
t/012-function.t ........ ok
t/013-class.t ........... ok
t/014-ngx_var.t ......... ok
All tests successful.
Files=13, Tests=28,  5 wallclock secs ( 0.05 usr  0.02 sys +  1.26 cusr  0.22 csys =  1.55 CPU)
Result: PASS