php 实现curl 多请求和异步请求

记录一下后台请求外部接口时的几个常用场景

/**
 * 普通访问
 * @param $url :访问的URL，
 * @param $post :post数据(不填则为GET)，
 * @param $cookie :提交的$cookies,
 * @param $returnCookie :是否返回$cookies
 * */
public static function curl_request($url, $post = '', $cookie = '', $returnCookie = 0)
{
	$headers = [];
	if (is_array($post)) {
		$post = json_encode($post);
	}
	$header = array('Content-Type' => 'application/x-www-form-urlencoded', 'Access-Control-Allow-Origin:*');
	foreach ($header as $key => $value) {
		$headers[] = $key . ":" . $value;
	}
	$curl = curl_init();

	curl_setopt($curl, CURLOPT_URL, $url);
	//        curl_setopt($curl, CURLOPT_USERAGENT, 'Mozilla/5.0 (compatible; MSIE 10.0; Windows NT 6.1; Trident/6.0)');
	curl_setopt($curl, CURLOPT_FOLLOWLOCATION, 1);
	curl_setopt($curl, CURLOPT_AUTOREFERER, 1);
	//        curl_setopt($curl, CURLOPT_REFERER, "http://XXX");
	if ($post) {
		curl_setopt($curl, CURLOPT_POST, false);
		curl_setopt($curl, CURLOPT_POSTFIELDS, $post);
	}
	if ($cookie) {
		curl_setopt($curl, CURLOPT_COOKIE, $cookie);
	}
	curl_setopt($curl, CURLOPT_HEADER, $returnCookie);
	curl_setopt($curl, CURLOPT_TIMEOUT, 10);

	//https请求 不验证证书和host
	curl_setopt($curl, CURLOPT_SSL_VERIFYPEER, false);
	curl_setopt($curl, CURLOPT_SSL_VERIFYHOST, false);
	curl_setopt($curl, CURLOPT_HTTPHEADER, $headers);
	curl_setopt($curl, CURLOPT_RETURNTRANSFER, true);
	$data = curl_exec($curl);
	if (curl_errno($curl)) {
		return curl_error($curl);
	}
	curl_close($curl);
	if ($returnCookie) {
		list($header, $body) = explode("\r\n\r\n", $data, 2);
		preg_match_all("/Set-Cookie:([^;]*);/", $header, $matches);
		$info['cookie'] = substr($matches[1][0], 1);
		$info['content'] = $body;
		return $info;
	} else {
		return $data;
	}
}


/**
     * 异步请求
     * @param $url
     * @param array $param
     */
public static function asyncRequest($url, $param = array())
{
	//        ignore_user_abort(true); // 忽略客户端断开
	//        set_time_limit(0);    // 设置执行不超时

	$urlinfo = parse_url($url);

	$host = $urlinfo['host'];
	$path = $urlinfo['path'];
	$query = isset($param) ? http_build_query($param) : '';

	$port = 80;
	$errno = 0;
	$errstr = '';
	$timeout = 10;

	$fp = fsockopen($host, $port, $errno, $errstr, $timeout);

	$out = "POST " . $path . " HTTP/1.1\r\n";
	$out .= "host:" . $host . "\r\n";
	$out .= "content-length:" . strlen($query) . "\r\n";
	$out .= "content-type:application/x-www-form-urlencoded\r\n";
	$out .= "connection:close\r\n\r\n";
	$out .= $query;

	fputs($fp, $out);
	fclose($fp);
}

/**
     * 同时多个curl
     * @param array $url_array
     * @param int $wait_usec
     * @param string $cookie
     * @param string $return_type
     * @return array|false
     */
public static function async_get_urls(array $url_array, int $wait_usec = 10, string $cookie = '' , string $return_type = 'array')
{
	if (!is_array($url_array)) {
		return false;
	}
	$defaults = [];
	$wait_usec = intval($wait_usec);
	$data = array();
	$handle = array();
	$running = 0;
	$mh = curl_multi_init();
	$i = 0;
	foreach ($url_array as $url) {
		$ch = curl_init();
		curl_setopt($ch, CURLOPT_COOKIE, $cookie);
		curl_setopt($ch, CURLOPT_HTTPHEADER, ["Accept-Encoding" => "gzip, deflate, br", "Connection" => "keep-alive", "Host" => "webcast3-normal-c-hl.amemv.com", "Content-Type" => "application/json;charset=utf-8"]);
		curl_setopt($ch, CURLOPT_URL, $url);
		curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
		curl_setopt($ch, CURLOPT_TIMEOUT, 100);
		//curl_setopt($ch, CURLOPT_USERAGENT, 'Mozilla/4.0 (compatible; MSIE 5.01; Windows NT 5.0)');
		curl_setopt($ch, CURLOPT_FOLLOWLOCATION, 1);
		curl_setopt($ch, CURLOPT_MAXREDIRS, 7);
		$protocol = substr($url, 0, 5);
		if ('https' == $protocol) {
			curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
			curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, false);
		}
		curl_multi_add_handle($mh, $ch);
		$handle[$i++] = $ch;
	}
	do {
		curl_multi_exec($mh, $running);
		if ($wait_usec > 0) {
			usleep($wait_usec);
		}
	} while ($running > 0);

	foreach ($handle as $i => $ch) {
		$content = curl_multi_getcontent($ch);
		$data[$i] = (curl_errno($ch) == 0) ? $content : false;
		if( $return_type == 'array')
			$data[$i] = json_decode($data[$i], true);
	}
	foreach ($handle as $ch) {
		curl_multi_remove_handle($mh, $ch);
	}
	curl_multi_close($mh);

	return $data;
}