CURL
用法:

c_get(URL,method(post/get),data,referer,timeout(second),use_cookie(true/false),save_cookie(true/false),cookie_Path)
return:
    $content = array(
        $body,
        $header
    );

例如:

//POST METHOD :D
c_get(
    "https://localhost/testlogin.php",
    'post',
    array("name" => "username","pass" => "userpassword"),
    "",
    15,
    false,//不传输cookie
    true,//保存cookie
    "testlogin.ck.txt"
);
//GET METHOD :D
$ct = c_get(
    "https://localhost/testget.php?v1=val2333&v2=val1248",
    'get',
    "使用get的话,这里的data不用填,而是填到url那里去",
    "https://www.referer.mother",
    20,
    true,//传输cookie
    false,//不保存cookie
    "ck/6zhen.txt"
);

复制以下代码:

function c_get($url, $method, $data = '', $referer = 'https://google.com/s', $timeout = 10, $useck = false, $saveck = false, $ckfile = "ck.txt") {
    $headerinfo = array(
        "Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,image/apng,*/*;q=0.8",
        "User-Agent: Mozilla/5.0 (X11; Linux i686) AppleWebKit/537.36 (KHTML, like Gecko) Ubuntu Chromium/71.0.3578.80 Chrome/71.0.3578.80 Safari/537.36"
    );
    $ch = curl_init();
    curl_setopt($ch, CURLOPT_URL, $url);
    curl_setopt($ch, CURLOPT_HTTPHEADER, $headerinfo);
    curl_setopt($ch, CURLOPT_TIMEOUT_MS, $timeout * 1000); //超时毫秒 ms
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
    curl_setopt($ch, CURLOPT_REFERER, $referer);
    curl_setopt($ch, CURLOPT_FOLLOWLOCATION, true);
    curl_setopt($ch, CURLOPT_HEADER, true);
    curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
    if ($saveck == true) {
        curl_setopt($ch, CURLOPT_COOKIEJAR, $ckfile);
    }
    if (file_exists($ckfile) && $useck == true) {
        curl_setopt($ch, CURLOPT_COOKIEFILE, $ckfile);
    }
    if ($method == "post") {
        curl_setopt($ch, CURLOPT_POST, 1);
        curl_setopt($ch, CURLOPT_POSTFIELDS, $data);
    }
    $content = curl_exec($ch);
    if (curl_errno($ch)) {
        return 'Curl error: ' . curl_error($ch);
    }
    if ($content == false) {
        return "Get content false!";
    }
    $headerSize = curl_getinfo($ch, CURLINFO_HEADER_SIZE);
    $header = substr($content, 0, $headerSize);
    $body = substr($content, $headerSize);
    if (in_array(curl_getinfo($ch, CURLINFO_HTTP_CODE), ['301','302'])) {
        preg_match("@location: (.*?)[\n\r;]@i", $header, $tmpgo);
        curl_close($ch);
        return c_get($tmpgo[1]);
    }
    curl_close($ch);
    $content = array(
        $body,
        $header
    );
    return $content;
}

By the way
CURLOPT_POSTFIELDS一定要在CURLOPT_POST之后设置,否则不能传输。