Guzzle是一个PHP的HTTP客户端，用来轻而易举地发送请求，并集成到我们的WEB服务上。Guzzle提供了简单的接口，构建查询语句、POST请求、分流上传下载大文件、使用HTTP cookies、上传JSON数据等等。

使用Composer安装：

composer require guzzlehttp/guzzle
或者编辑项目的composer.json文件，添加Guzzle作为依赖：
   "require": {
      "guzzlehttp/guzzle": "~6.0"
然后执行composer update
Guzzle基本使用
use GuzzleHttp\Client;
$client = new Client([
    // Base URI is used with relative requests
    'base_uri' => 'http://httpbin.org',
    // You can set any number of default request options.
    'timeout'  => 2.0,
$response = $client->get('http://httpbin.org/get');
$response = $client->delete('http://httpbin.org/delete');
$response = $client->head('http://httpbin.org/get');
$response = $client->options('http://httpbin.org/get');
$response = $client->patch('http://httpbin.org/patch');
$response = $client->post('http://httpbin.org/post');
$response = $client->put('http://httpbin.org/put');
设置查询字符串
$response = $client->request('GET', 'http://httpbin.org?foo=bar');
或使用query请求参数来声明查询字符串参数：
$client->request('GET', 'http://httpbin.org', [
    'query' => ['foo' => 'bar']
获取状态码：
$code = $response->getStatusCode(); // 200
$reason = $response->getReasonPhrase(); // OK
判断头部信息：
if ($response->hasHeader('Content-Length')) {
    echo "It exists";
获取返回的头部信息：
echo $response->getHeader('Content-Length');
// Get all of the response headers.
foreach ($response->getHeaders() as $name => $values) {
    echo $name . ': ' . implode(', ', $values) . "\r\n";
使用getBody方法可以获取响应的主体部分(body)，主体可以当成一个字符串或流对象使用
$body = $response->getBody();
可以将返回体转换成字符串或者直接以字符串形式读取：
$stringBody = (string) $body;
$content = $body->getContents();
有时我们需要将文件传送到另一个web服务上去，可以使用post文件流形式将文件数据传送到指定web目录。
$filename = 'a.jpg';
$data = fopen($filename, 'r');
$res = $client->request('POST', 'http://localhost:9999/upload.php', ['body' => $data]);
$body = $res->getBody();
print_r($body->getContents());
接收上传文件的upload.php可以这样写：
if ($_SERVER['REQUEST_METHOD'] == 'POST') {
    $data = file_get_contents('php://input');
    $file = file_put_contents('b.jpg', $data);
    if (FALSE === $file) {
        echo '上传成功';
    } else {
        echo '上传失败';
发送application/x-www-form-urlencoded POST请求需要你传入form_params 数组参数，数组内指定POST的字段。
$res = $client->request('POST', 'http://localhost:9999/form.php', [
    'form_params' => [
        'field_name' => 'abc',
        'other_field' => '123',
        'nested_field' => [
            'nested' => 'hello'
$body = $res->getBody();
print_r((string)$body);
在接收端form.php使用$_POST即可获取上传的表单数据。
提交JSON数据
有时候我们在于API接口交互的时候需要将数据以特定的json格式传给api，可以这样写：
$res = $client->request('POST', 'http://localhost:9999/json.php', [
    'json' => ['foo' => 'bar']
$body = $res->getBody();
print_r((string)$body);
接收端json.php使用file_get_contents('php://input')可获得提交的json数据。
使用Guzzle还可以发送异步请求以及并发请求，具体使用方法可参照Guzzle官方文档。
其实我们在一些特殊场景下可以使用Swoole的协程特性实现异步的http客户端，功能非常强大。
https://www.helloweba.net/php/596.html
-----------------------------------------------------------自己项目----------------------------------------------------
GuzzleHttp application/x-www-form-urlencoded 
headers 上加 Authorization
 $url = "http://xx.xx18.com/kxxord/bxxxupc";
        $key = "4283A7F1244D4172Axxxxxx";
        $headers = [
            'Content-Type'  => 'application/x-www-form-urlencoded',
            'Authorization' => $key,
        $client = new \GuzzleHttp\Client();
        $param = [
          'url'=>$domain_name,
          'page_index'=>1,
        $response = $client->request('POST', $url,['form_params'=>$param,'headers'=>$headers]);
        $response->getStatusCode(); // 200
        $response->getHeaderLine('content-type'); // 'application/json; charset=utf8'
//            $body = $response->getBody(); // '{"id": 1420053, "name": "guzzle", ...}'
        $data = json_decode($response->getBody(), true);
                'key'=>$chinazApi_key,
                'keyword'=>$user['word_by_domain'],
                'domainName'=>$user['domain_name'],
            $response_chinaz = $client->request('POST', $china_url,['form_params'=>$param_chinaz,'connect_timeout' => 120]);

-----------------------------------------------------封装的curl请求------------------------------------------------------------------
 public function index()
//dump('ddd hello world');die;
        $time  = time();
                $arr = [
            "高防vps","移动高防", "游戏高防服务器", "直播高防cdn", "高防主机", "cdn高防ddos", "高防独立服务器租用", "武汉安全公司", "高防",
            "杭州高防服务器", "浙江高防", "高防ip", "域名高防", "山东高防服务器", "传奇高防服务器", "武汉网络安全公司", "游戏盾", "青岛高防服务器",
            "武汉网络安全", "高防cdn购买", "硬防服务器", "高防护服务器", "网游高防服务器", "青岛bgp高防", "waf高级版", "青岛bgp", "高防IP",
            "主机waf", "免费高防ip", "waf 高防", "魔域高防服务器", "武汉高防服务器", "动态高防", "湖北高防服务器", "waf服务器", "武汉机房", "高防idc", "ip高防",
            "高防游戏盾", "扬州双线", "waf", "网络攻击", "防", "独立服务器",
        foreach ($arr as $k => $v){
            $chinazApi_key = "09f74f9089f6428c9fdfc65744572"; //chinazApi_key
            $china_url     = "http://www.chinaz523.com/CallAPI/BaiduIndex";
            $param_chinaz    = [
                'key'     => $chinazApi_key,
                'keyword' =>$v,
//            $response_chinaz = $client_chinaz->request('POST', $china_url, ['form_params' => $param_chinaz, 'connect_timeout' => 180,]);
            try {
            $res  = $this->curl($china_url,"post",'',$param_chinaz);
            } catch (\Exception $e) {
                dump($e->getMessage());die;
            $res1 = [
                'keyword'=>$v,
                'res'=>$res,
//            sleep(3);
            dump($res1);
        dump(time()-$time." s");
 // $url 是请求的链接
// $postdata 是传输的数据，数组格式
    private function curl($url = '', $method = 'get',$header = [],$param = [])
        $val = strtolower($method) == 'get' ? 0 : 1;
        $ch = curl_init();
        curl_setopt($ch, CURLOPT_URL, $url);
        curl_setopt($ch, CURLOPT_POST, $val);
        curl_setopt($ch, CURLOPT_HEADER, 0);
        curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
        //设置为不是https也可以访问
        curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, 0);
        curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, 0);
        //设置header头
        if ( !empty($header) ) {
            curl_setopt($ch, CURLOPT_HTTPHEADER, $header);
        //设置post的数据包，即传参
        if(!empty($param) && $val == 1){
            curl_setopt($ch, CURLOPT_POSTFIELDS, $param);
        if (isset($header['header'])){
            $header_info = curl_getinfo($ch);
            var_dump($header_info);
        $result = curl_exec($ch);
        curl_close($ch);
        return $result;
 -------------------------------------------能成---------------------------------------------------------------------------------------
$url = "http://xxxx.com/keyword/xxupc";
        $key = "5B4FE278B5EF43xx78csdsD";
        $headers = [
            'Content-Type'  => 'application/x-www-form-urlencoded',
            'Authorization' => $key,
        $client = new \GuzzleHttp\Client(['connect_timeout' =>10,'timeout' => 10]); //设置超时时间
        $param = [
          'url'=>$domain_name,
        $response = $client->request('POST', $url,['form_params'=>$param,'headers'=>$headers]);
        $response->getStatusCode(); // 200
        $response->getHeaderLine('content-type'); // 'application/json; charset=utf8'
//            $body = $response->getBody(); // '{"id": 1420053, "name": "guzzle", ...}'
        $data = json_decode($response->getBody(), true);
 --------------------------------------------------------------------------------------------------------------------
 加verify=>false 是除掉ssl报错的
$url = "https://api.newrank.cn/xxxxxe/search";
        $key = "cd75xxxxx6b510c";
        $headers = [
            'Content-Type'  => 'application/x-www-form-urlencoded;charset=utf-8',
            'key' => $key,
        $client = new \GuzzleHttp\Client(['verify' => false]);
        $param = [
            'includeAllWords'=>'娱乐圈',
            'includeAnyWords'=>'事件',
            'from'=>'2022-03-30 17:37:27',
            'to'=>'2022-04-01 17:37:27',
            'page'=>'1',
            'size'=>'20',
        $response = $client->request('post', $url,['form_params'=>$param,'headers'=>$headers]);
        $response->getStatusCode(); // 200
        $response->getHeaderLine('content-type'); // 'application/json; charset=utf8'
//            $body = $response->getBody(); // '{"id": 1420053, "name": "guzzle", ...}'
        $data = json_decode($response->getBody(), true);