php请求url的方式

 //curl 请求 $url  
 //

1. 初始化连接句柄；
2. 设置CURL选项；
3. 执行并获取结果；
4. 释放VURL连接句柄

$curl = curl_init();    //初始化连接句柄   
        curl_setopt($curl, CURLOPT_URL, $url); //设置curl选项
        curl_setopt($curl, CURLOPT_HEADER, 0);
        curl_setopt($curl, CURLOPT_RETURNTRANSFER, 1);
        curl_setopt($curl, CURLOPT_SSL_VERIFYPEER, FALSE);
        $data = curl_exec($curl);//执行查询

第二种请求方式

 $d = [
                      "is_express" => "2",
                      "order_id" => $order_data['order_id'],     
                      "dd" => "1",
                      "id" => $order_data['mall_id'],
                      'express_content' => '充值成功'
                  ];
                  //发货
                  $r = file_get_contents('http://xiaowei.shop.test/web/index.php?r=api/test/fa&' . http_build_query($d));
                  $res = json_decode($r, true);

 curl post和get请求方法

function http_get($url)
{
    $oCurl = curl_init();
    if (stripos($url, "https://") !== FALSE) {
        curl_setopt($oCurl, CURLOPT_SSL_VERIFYPEER, FALSE);
        curl_setopt($oCurl, CURLOPT_SSL_VERIFYHOST, FALSE);
        curl_setopt($oCurl, CURLOPT_SSLVERSION, 1); //CURL_SSLVERSION_TLSv1
    }
  // 如果需要header设置内容

    curl_setopt($oCurl, CURLOPT_URL, $url);
   // curl_setopt($0Curl,CURLOPT_HTTPHEADER,$header) //设置请求头:$header =["cookie:缓存值",'Content-type: text/plain', 'Content-length: 100']
    curl_setopt($oCurl, CURLOPT_RETURNTRANSFER, 1);
    $sContent = curl_exec($oCurl);
    $aStatus = curl_getinfo($oCurl);
    curl_close($oCurl);
    if (intval($aStatus["http_code"]) == 200) {
        return $sContent;
    } else {
        return false;
    }
}

function http_post($url, $param, $post_file = false)
{
    $oCurl = curl_init();
    if (stripos($url, "https://") !== FALSE) {
        curl_setopt($oCurl, CURLOPT_SSL_VERIFYPEER, FALSE);
        curl_setopt($oCurl, CURLOPT_SSL_VERIFYHOST, false);
        curl_setopt($oCurl, CURLOPT_SSLVERSION, 1); //CURL_SSLVERSION_TLSv1
    }
    if (is_string($param) || $post_file) {
        $strPOST = $param;
    } else {
        $aPOST = array();
        foreach ($param as $key => $val) {
            $aPOST[] = $key . "=" . urlencode($val);
        }
        $strPOST = join("&", $aPOST);
    }
    curl_setopt($oCurl, CURLOPT_URL, $url);
    curl_setopt($oCurl, CURLOPT_RETURNTRANSFER, 1);//
    curl_setopt($oCurl, CURLOPT_POST, true);
    curl_setopt($oCurl, CURLOPT_POSTFIELDS, $strPOST);
    $sContent = curl_exec($oCurl);
    $aStatus = curl_getinfo($oCurl);
    curl_close($oCurl);
    if (intval($aStatus["http_code"]) == 200) {
        return $sContent;
    } else {
        return false;
    }
}

 第三种fopen()函数;

三、fopen()函数

$file = fopen("http://www.baidu.com", "r") or die("打开远程文件失败!");

 第四种

4.fsockopen方式（只能获取网站主页信息，其他页面不可以）
$fp = fsockopen("www.example.com", 80, $errno, $errstr, 30);     
if (!$fp) {     
    echo "$errstr ($errno)<br /> ";     
} else {     
    $out="GET / HTTP/1.1 ";     
    $out.="Host: www.example.com ";     
    $out.="Connection: Close ";     
    fwrite($fp, $out);     
    while (!feof($fp)) {     
        echo fgets($fp, 128);     
    }  
    fclose($fp);     
}