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sudo apt-get install landscape-common

/**
 * 发起一个HTTP请求
 * 
 * @param string $url
 * @param array $options 
 * 
 * @example 
 * 
 * @return string
 */
function shttp_request($url, $options = array())
{
	//默认配置
	$default_options = array(
			'post_data' => array(), //可以关联数组，也可以直接是经过URL编码后字符串
			'headers' => array(), //http请求头信息, 格式为KEY=>VALUE形式
			'timeout' => 3, //sec, 超时，0为不限制
			'follow_loc' => 0, //是否跟踪Location跳转
			'output_header' => 0, //是否输出HTTP头信息
			'userpwd' => array(), //用户名和密码，需要验证时使用。格式：array('username', 'password')
			'maxredirs' => 5, // 最大跳转次数
			'halt' => 1, //遇到错误是否exit
		);
	$options = array_merge($default_options, $options);
 
    $ch = curl_init();
 
    //url
    curl_setopt($ch, CURLOPT_URL, $url);
 
    //instead of outputting it out directly
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
    //automatically set the Referer
    curl_setopt($ch, CURLOPT_AUTOREFERER, true);
    //TRUE to follow any "Location: " header that the server sends
    curl_setopt($ch, CURLOPT_FOLLOWLOCATION, $options['follow_loc'] ? true : false);    
    //maximum amount of HTTP redirections to follow
    curl_setopt($ch, CURLOPT_MAXREDIRS, $options['maxredirs']);
    //The number of seconds to wait whilst trying to connect. Use 0 to wait indefinitely
    curl_setopt($ch, CURLOPT_CONNECTTIMEOUT, $options['timeout']);
 
    if( !empty($options['headers']) ) {
    	$header_user_agent = 0;//is set user agent
    	foreach ($options['headers'] as $hkey=>$hval) {
    		if(strtolower(trim($hkey)) == 'user-agent') { $header_user_agent = 1; }
    		$nheaders[] = trim($hkey).": ".trim($hval);
    	}
    	curl_setopt($ch, CURLOPT_HTTPHEADER, $nheaders);
    }
 
    //Set Default User-Agent
    if( empty($header_user_agent) ) {
    	//IE7 on Windows Xp
    	curl_setopt($ch, CURLOPT_USERAGENT, 'Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.1)');
    }
 
    //TRUE to include the header in the output
    curl_setopt($ch, CURLOPT_HEADER, $options['output_header'] ? true : false);
 
    //HTTPS
    if( stripos($url, "https://") !== FALSE ) {
        curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, false);
        curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
    }
 
    //Set Username & Password
    if( !empty($options['userpwd']) ) {
    	curl_setopt($ch, CURLOPT_USERPWD, "[{$options['username']}]:[{$options['password']}]");
    }
 
    //post data
    if( !empty($options['post_data']) ) {
    	curl_setopt($ch, CURLOPT_POST, true);
    	if( is_array($options['post_data']) )
    	{
        	$encoded = "";
            foreach ( $options['post_data'] as $k=>$v)
            {   
                $encoded .= "&".rawurlencode($k)."=".rawurlencode($v);
            }
            $encoded = substr($encoded, 1);//去掉首个'&'
            curl_setopt($ch, CURLOPT_POSTFIELDS, $encoded);
    	}else{
    	    curl_setopt($ch, CURLOPT_POSTFIELDS, $options['post_data']);
    	}
    }
 
    $res = curl_exec($ch);
 
    if( $res === FALSE ) {
    	//echo "[function shttp_request]REQUEST URL: {$url}，FAILURE! Error: ".curl_error($ch)."\n";
    	if($options['halt']) {
    		curl_close($ch);
    		exit();
    	}else{
    		return FALSE;
    	}
    }
    curl_close($ch);
 
    return $res; 
}

shttp_request("http://blog.panzhibiao.com", array('post_data'=>'a=1&b=2', 'timeout'=>10));

# 下在Lua最新版，并解压
wget http://www.lua.org/ftp/lua-5.1.4.tar.gz
 
tar zxvf lua-5.1.4.tar.gz
 
cd lua-5.1.4
 
# 安装libreadline5
sudo apt-get install libreadline5 libreadline5-dev
 
# 安装编译工具
sudo apt-get install build-essential
 
# 编译安装Lua
sudo make linux
sudo make install