curl -sS https://getcomposer.org/installer | php
mv composer.phar /usr/local/bin/composer

composer install --prefer-dist

server
{
    listen       80;
    server_name  im.swoole.com;
    index index.shtml index.html index.htm index.php;
    root  /path/to/PHPWebIM/client;
    location ~ .*\.(php|php5)?$
    {
     fastcgi_pass  127.0.0.1:9000;
     fastcgi_index index.php;
     include fastcgi.conf;
    }
    access_log  /Library/WebServer/nginx/logs/im.swoole.com  access;
}

<VirtualHost *:80>
    DocumentRoot "path/to/PHPWebIM/client"
    ServerName im.swoole.com
    AddType application/x-httpd-php .php
    <Directory />
        Options Indexes FollowSymLinks
        AllowOverride None
        Require all granted
        DirectoryIndex index.php
    </Directory>
</VirtualHost>

$config['server'] = array(
'host' => '19.0.3.245',
'port' => '9503',
);

var webim = {
    'server' : 'ws://19.0.3.245:9503'
}

php PHPWebIM/webim_server.php

vi /etc/hosts