php发送http请求的常用方法分析

// 初始化一个 cURL 对象
$curl = curl_init();
// 设置你需要抓取的URL
curl_setopt($curl, CURLOPT_URL, 'https://www.jb51.net');
// 设置header 响应头是否输出
curl_setopt($curl, CURLOPT_HEADER, 1);
// 设置cURL 参数，要求结果保存到字符串中还是输出到屏幕上。
// 1如果成功只将结果返回，不自动输出任何内容。如果失败返回FALSE
curl_setopt($curl, CURLOPT_RETURNTRANSFER, 0);
// 运行cURL，请求网页
$data = curl_exec($curl);
// 关闭URL请求
curl_close($curl);
// 显示获得的数据
print_r($data);

//post方式
$phoneNumber ="13912345678";
$message = "testMessage";
$curlPost = "phone=".urlencode($phoneNumber)."&message=".$message;
$ch=curl_init();
curl_setopt($ch,CURLOPT_URL,'http://mytest/lab/t.php');
curl_setopt($ch,CURLOPT_HEADER,0);
curl_setopt($ch,CURLOPT_RETURNTRANSFER,0);
//设置是通过post还是get方法
curl_setopt($ch,CURLOPT_POST,1);
//传递的变量
curl_setopt($ch,CURLOPT_POSTFIELDS,$curlPost);
$data = curl_exec($ch);
curl_close($ch);

if(!empty($_POST)){
 print_r($_POST);
}

$gurl = "http://mytest/lab/t.php?uu=gggggg";
//print_r(parse_url($gurl));
echo "以下是GET方式的响应内容：<br>";
sock_get($gurl);
function sock_get($url)
{
 $info = parse_url($url);
 $fp = fsockopen($info["host"], 80, $errno, $errstr, 3);
 $head = "GET ".$info['path']."?".$info["query"]." HTTP/1.0\r\n";
 $head .= "Host: ".$info['host']."\r\n";
 $head .= "\r\n";
 $write = fputs($fp, $head);
 while (!feof($fp)){
  $line = fgets($fp);
  echo $line."<br>";
 }
}
//fsocket模拟post提交
$purl = "http://mytest/lab/t.php";
echo "以下是POST方式的响应内容：<br>";
sock_post($purl,"uu=rrrrrrrrrrrr&&kk=mmmmmm");
function sock_post($url, $query)
{
 $info = parse_url($url);
 $fp = fsockopen($info["host"], 80, $errno, $errstr, 3);
 $head = "POST ".$info['path']." HTTP/1.0\r\n";
 $head .= "Host: ".$info['host']."\r\n";
 $head .= "Referer: http://".$info['host'].$info['path']."\r\n";
 $head .= "Content-type: application/x-www-form-urlencoded\r\n";
 $head .= "Content-Length: ".strlen(trim($query))."\r\n";
 $head .= "\r\n";
 $head .= trim($query);
 $write = fputs($fp, $head);
 print_r(fgets($fp));
 while (!feof($fp))
 {
  $line = fgets($fp);
  echo $line."<br>";
 }
}