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Home Backend Development PHP Tutorial PHP中使用cURL實(shí)現(xiàn)Get和Post請(qǐng)求的方法_php技巧

PHP中使用cURL實(shí)現(xiàn)Get和Post請(qǐng)求的方法_php技巧

May 17, 2016 am 09:06 AM
curl get post

1.cURL介紹

  cURL 是一個(gè)利用URL語法規(guī)定來傳輸文件和數(shù)據(jù)的工具,支持很多協(xié)議,如HTTP、FTP、TELNET等。最爽的是,PHP也支持 cURL 庫。本文將介紹 cURL 的一些高級(jí)特性,以及在PHP中如何運(yùn)用它。

2.基本結(jié)構(gòu)

  在學(xué)習(xí)更為復(fù)雜的功能之前,先來看一下在PHP中建立cURL請(qǐng)求的基本步驟:

 ?。?)初始化


    curl_init()

 ?。?)設(shè)置變量


    curl_setopt() 。最為重要,一切玄妙均在此。有一長串cURL參數(shù)可供設(shè)置,它們能指定URL請(qǐng)求的各個(gè)細(xì)節(jié)。要一次性全部看完并理解可能比較困難,所以今天我們只試一下那些更常用也更有用的選項(xiàng)。

  (3)執(zhí)行并獲取結(jié)果


    curl_exec()

 ?。?)釋放cURL句柄


    curl_close()

3.cURL實(shí)現(xiàn)Get和Post

3.1 Get方式實(shí)現(xiàn)

復(fù)制代碼 代碼如下:

  //初始化
  $ch = curl_init();

  //設(shè)置選項(xiàng),包括URL
  curl_setopt($ch, CURLOPT_URL, "http://www.jb51.net");
  curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
  curl_setopt($ch, CURLOPT_HEADER, 0);

  //執(zhí)行并獲取HTML文檔內(nèi)容
  $output = curl_exec($ch);

  //釋放curl句柄
  curl_close($ch);

  //打印獲得的數(shù)據(jù)
  print_r($output);


3.2 Post方式實(shí)現(xiàn)
復(fù)制代碼 代碼如下:

   $url = "http://localhost/web_services.php";
  $post_data = array ("username" => "bob","key" => "12345");

  $ch = curl_init();

  curl_setopt($ch, CURLOPT_URL, $url);
  curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
  // post數(shù)據(jù)
  curl_setopt($ch, CURLOPT_POST, 1);
  // post的變量
  curl_setopt($ch, CURLOPT_POSTFIELDS, $post_data);

  $output = curl_exec($ch);
  curl_close($ch);

  //打印獲得的數(shù)據(jù)
  print_r($output);

  


  以上方式獲取到的數(shù)據(jù)是json格式的,使用json_decode函數(shù)解釋成數(shù)組。

  $output_array = json_decode($output,true);

  如果使用json_decode($output)解析的話,將會(huì)得到object類型的數(shù)據(jù)。

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