无状态：每次请求完成就结束连接，下一次请求与上次请求没有关系。

报文：HTTP交互的信息。

telnet模拟请求：

// GET方式，最后回车换行

Aston$ telnet 127.0.0.1 80

GET /Tools/Test/http.php HTTP/1.1

Host:localhost

// POST方式，最后回车换行,输入参数

Aston$ telnet 127.0.0.1 80

POST /Tools/Test/http.php HTTP/1.1

Host:localhost

Content-type:application/x-www-form-urlencoded

Content-length:20

name=chenjian&age=28

fiddler用法：

利用file_get_content来发送数据：

$data = array(

"name" => "chenjian",

"age" => 28

);

$postData = http_build_query($data);

$opts = array(

"http" => array(

"host" => "localhost\r\n",

"method" => "POST",

"header" => "Content-type:application/x-www-form-urlencoded\r\n" . "Content-length:".strlen($postData)."\r\n",

"content" => $postData

);

);

$context = stream_context_create($opts);

file_get_contents("http://localhost/http/index.php", false, $context);

socket方式：

$data = array(

"name" => "chenjian",

"age" => 28

);

$postData = http_build_query($data);

$fp = fsockopen("localhost", 80, $errno, $errorStr, 5);

$request = "POST http://localhost/http/socket.php HTTP/1.1\r\n";

$request .= "Host:locahost\r\n";

$request .= "Content-type:application/x-www-form-urlencoded\r\n";

$request .= "Content-length:" . strlen($postData) . "\r\n";

$request .= $postData;

fwrite($fp, $request);

while (!feof($fp)) {

echo fgets($fp, 1024);

}

fclose($fp);

curl拓展：

$url = "http://localhost/http/curl.php";

$data = array(

"name" => "chenjian",

"age" => 28

);

// 1. 初始化curl会话

$ch = curl_init();

// 2. 设置

curl_setopt($ch, CURLOPT_URL, $url); //提交网址

curl_setopt($ch, CURLOPT_POST, 1); //提交方式

curl_setopt($ch, CURLOPT_POSTFIELDS, $data); //提交数据

curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1); //提交成功后返回数据字符串

// 3. 执行

$out_put = curl_exec($ch);

// 4. 关闭会话

curl_close($ch);

var_dump($out_put);