cURL无法确认函数参数

Question

我正在使用php.net手册上流行的注释中的cURL函数，尽管该函数的参数（用于指定URL）未被识别或初始化。 现在，当我启用CURLOPT_URL并在数组中指定URL时，它将显示网页，并且数组返回适当的信息，但是我不希望显示该网页，只需在数组中返回信息，但是curl_exec是必需的总而言之，这总是显示网页。

我究竟做错了什么？

//defines the function get_web_page
$url = "http://ulrichzukowebtv.comli.com";
    function get_web_page($url)
{
    $options = array(
        //CURLOPT_URL => 'http://ulrichzukowebtv.comli.com',

        CURLOPT_RETURNTRANSFER => true,     // return web page

        CURLOPT_HEADER         => false,    // don't return headers

        CURLOPT_FOLLOWLOCATION => true,     // follow redirects

        CURLOPT_ENCODING       => "",       // handle compressed

        CURLOPT_USERAGENT      => "spider", // who am i

        CURLOPT_AUTOREFERER    => true,     // set referer on redirect

        CURLOPT_CONNECTTIMEOUT => 120,      // timeout on connect

        CURLOPT_TIMEOUT        => 120,      // timeout on response

        CURLOPT_MAXREDIRS      => 10,       // stop after 10 redirects

    );



    $ch = curl_init();

    curl_setopt_array($ch, $options);

    $content = curl_exec($ch);

    $err = curl_errno($ch);

    $errmsg = curl_error($ch);

    $header = curl_getinfo($ch);

    curl_close($ch);



    $header['errno'] = $err;

    $header['errmsg'] = $errmsg;

    $header['content'] = $content;

    return $header;

} //end defining function


$curl_data = "var1=60&var2=test";

//call the function
$response = get_web_page($url, $curl_data);

print '<pre>';

//Returns an array containing all the CURL flags specified
print_r($response); 

Answer 1

尝试使用

CURLOPT_RETURNTRANSFER => false, 

我所知道的，如果将returntransfer设置为TRUE，则该网页显示为浏览器。 所有过滤器和其他编码都在returntranfer之后，因此您无法查看它们

不用担心，如果将其设置为false，仍然curl将获取页面并执行您将要编写的代码。

希望对您有帮助。

Answer 2

试试这个，看看它是否满足您的要求。 我实际上并没有做太大改变，只是重构了代码以使其更易于阅读，并添加了一些更具描述性/可读性的注释来解释一切。 在我更改了某些内容的地方，有一条评论解释了我更改了原因。

<?php

  function get_web_page ($url, $params = NULL) {

    // Add a query string to the URL if one was supplied.
    // Previously your second argument $curl_data was unhandled and ignored.
    if (is_array($params) || is_object($params)) {
      // Build a query string from an associative array or object and append to the URL
      $url .= '?'.http_build_query($params);
    } else if ($params !== NULL) {
      // Append scalar values directly to the URL
      $url .= '?'.$params;
    }

    // Define the options for cURL
    $options = array (
      CURLOPT_URL            => $url,     // URL we will be loading
      CURLOPT_RETURNTRANSFER => true,     // Return data instead of outputting it
      CURLOPT_HEADER         => false,    // Omit headers from the return value
      CURLOPT_FOLLOWLOCATION => true,     // Follow redirects
      CURLOPT_ENCODING       => "",       // Handle compressed
      CURLOPT_USERAGENT      => "spider", // Tell the server who we are
      CURLOPT_AUTOREFERER    => true,     // Set referer on redirect
      CURLOPT_CONNECTTIMEOUT => 120,      // Timeout on connect (2 minutes is a very long time...!)
      CURLOPT_TIMEOUT        => 120,      // Timeout on response (2 minutes is a very long time...!)
      CURLOPT_MAXREDIRS      => 10        // Stop after 10 redirects
    );

    // Initialise cURL and set the options we defined above
    $ch = curl_init();
    curl_setopt_array($ch, $options);

    // Make the request
    $content = curl_exec($ch);

    // Fetch the result info into an array
    $result = array();
    $result['options'] = $options;         // The options used for the request
    $result['content'] = $content;         // The body of the response from the server
    $result['header'] = curl_getinfo($ch); // Information about the request, including some headers
    $result['errno'] = curl_errno($ch);    // The numeric error code of the result
    $result['errmsg'] = curl_error($ch);   // The textual error of the result

    // Close the curl handle
    curl_close($ch);

    // Return the result info
    return $result;

  } // End function definition

  // Define the URL to load
  $url = "http://ulrichzukowebtv.comli.com/"; // You need the trailing forward slash if you are loading the root of the domain

  // Define the GET parameters to pass
  // We'll define this as an array to make if easier to read
  $params = array (
    'var1' => 60,
    'var2' => 'test'
  );

  // Call the function
  $response = get_web_page($url, $params);

  // Show the result - if you don't want the page to be output, remove these three lines
  print '<pre>';
  print_r($response);
  print '<pre>';