PHP CURL方法封装

  //--------------------------------------------------------------------------------------
  /**
    * 函数的含义说明：CURL发送post请求    获取数据
    * 
    * @access public 
    * @param str          $url     发送接口地址
    * @param array/json   $data    要发送的数据  
    * @param false/true   $json    false $data数组格式  true $data json格式
    * @return  返回json数据
     */   
    public function httpPostRequest($url, $data = null,$json = FALSE){
        //创建了一个curl会话资源，成功返回一个句柄；
        $curl = curl_init();
        //设置url
        curl_setopt($curl, CURLOPT_URL, $url);
        //设置为FALSE 禁止 cURL 验证对等证书（peer’s certificate）
        curl_setopt($curl, CURLOPT_SSL_VERIFYPEER, FALSE);
        //设置为 1 是检查服务器SSL证书中是否存在一个公用名(common name)
        curl_setopt($curl, CURLOPT_SSL_VERIFYHOST, FALSE);
        if (!empty($data)){
            //设置请求为POST
            curl_setopt($curl, CURLOPT_POST, 1);
            //curl_setopt($curl, CURLOPT_CONNECTTIMEOUT, 60); //最长的可忍受的连接时间
            //设置POST的数据域
            curl_setopt($curl, CURLOPT_POSTFIELDS, $data);
            if($json){
                curl_setopt($curl, CURLOPT_HEADER, 0);
                curl_setopt($curl, CURLOPT_HTTPHEADER, array(
                        'Content-Type: application/json; charset=utf-8',
                        'Content-Length: ' . strlen($data)
                    )
                );

            }
        }
        //设置是否将响应结果存入变量，1是存入，0是直接输出
        curl_setopt($curl, CURLOPT_RETURNTRANSFER, TRUE);
        //然后将响应结果存入变量
        $output = curl_exec($curl);
        //关闭这个curl会话资源
        curl_close($curl);
        return $output;
    }
  //--------------------------------------------------------------------------------------
  /**  
    * 函数的含义说明：CURL发送get请求    获取数据
    * 
    * @access public 
    * @param str $url 发送接口地址  https://api.douban.com/v2/movie/in_theaters?city=广州&start=0&count=10
    * @return  返回json数据
     */ 
     public function httpGetRequest($url){

        $curl = curl_init(); // 启动一个CURL会话
        curl_setopt($curl, CURLOPT_URL, $url);
        curl_setopt($curl, CURLOPT_HEADER, 0);
        curl_setopt($curl, CURLOPT_RETURNTRANSFER, 1);
        curl_setopt($curl, CURLOPT_SSL_VERIFYPEER, false); // 跳过证书检查
        //curl_setopt($curl, CURLOPT_SSL_VERIFYHOST, true);  // 从证书中检查SSL加密算法是否存在
        $output = curl_exec($curl);     //返回api的json对象
        //关闭URL请求
        curl_close($curl);
        return $output;    //返回json对象
    }


//--------------------------------------------------------------------------------------
/**  
  * 函数的含义说明:模仿登录带cookie值抓取页面
  * @access public 
  * @param  string   
  * @return string   
  */
$data=array('username' => 'promonkey', 
    'password' => '1q2w3e',
    'remember'=>1);
$data='username=zjzhoufy@126.com&password=1q2w3e&remember=1';
$curlobj = curl_init();         // 初始化
curl_setopt($curlobj, CURLOPT_URL, "http://www.imooc.com/user/login");      // 设置访问网页的URL
curl_setopt($curlobj, CURLOPT_RETURNTRANSFER, true);            // 执行之后不直接打印出来

// Cookie相关设置，这部分设置需要在所有会话开始之前设置
date_default_timezone_set('PRC'); // 使用Cookie时，必须先设置时区
curl_setopt($curlobj, CURLOPT_COOKIESESSION, TRUE); 
curl_setopt($curlobj, CURLOPT_HEADER, 0); 
curl_setopt($curlobj, CURLOPT_FOLLOWLOCATION, 1); // 这样能够让cURL支持页面链接跳转

curl_setopt($curlobj, CURLOPT_POST, 1);  
curl_setopt($curlobj, CURLOPT_POSTFIELDS, $data);  
curl_setopt($curlobj, CURLOPT_HTTPHEADER, array("application/x-www-form-urlencoded; charset=utf-8", 
    "Content-length: ".strlen($data)
    )); 
curl_exec($curlobj);    // 执行
curl_setopt($curlobj, CURLOPT_URL, "http://www.imooc.com/space/index");
curl_setopt($curlobj, CURLOPT_POST, 0);  
curl_setopt($curlobj, CURLOPT_HTTPHEADER, array("Content-type: text/xml"
    )); 
$output=curl_exec($curlobj);    // 执行
curl_close($curlobj);       // 关闭cURL
echo $output;
//--------------------------------------------------------------------------------------
/**  
  * 函数的含义说明:模仿登录获取cookie值抓取页面
  * @access public 
  * @param  string   
  * @return string   
  */
$data='username=demo_peter@126.com&password=123qwe&remember=1';
$curlobj = curl_init();         // 初始化
curl_setopt($curlobj, CURLOPT_URL, "http://www.imooc.com/user/login");      // 设置访问网页的URL
curl_setopt($curlobj, CURLOPT_RETURNTRANSFER, true);            // 执行之后不直接打印出来

// Cookie相关设置，这部分设置需要在所有会话开始之前设置
date_default_timezone_set('PRC'); // 使用Cookie时，必须先设置时区
curl_setopt($curlobj, CURLOPT_COOKIESESSION, TRUE); 
curl_setopt($curlobj, CURLOPT_HEADER, 0); 
// 注释掉这行，因为这个设置必须关闭安全模式 以及关闭open_basedir，对服务器安全不利
//curl_setopt($curlobj, CURLOPT_FOLLOWLOCATION, 1);  

curl_setopt($curlobj, CURLOPT_POST, 1);  
curl_setopt($curlobj, CURLOPT_POSTFIELDS, $data);  
curl_setopt($curlobj, CURLOPT_HTTPHEADER, array("application/x-www-form-urlencoded; charset=utf-8", 
    "Content-length: ".strlen($data)
    )); 
curl_exec($curlobj);    // 执行
curl_setopt($curlobj, CURLOPT_URL, "http://www.imooc.com/space/index");
curl_setopt($curlobj, CURLOPT_POST, 0);  
curl_setopt($curlobj, CURLOPT_HTTPHEADER, array("Content-type: text/xml"
    )); 
$output=curl_redir_exec($curlobj);  // 执行
curl_close($curlobj);           // 关闭cURL
echo $output;
//------------------------------------------------------------------------------------
        CURL登录携带cookie获取首页数据配置
    date_default_timezone_set('PRC');//使用cookie，必须先设置时区
    curl_setopt($curlobj,CURLOPT_COOKIESESSION,RURE);
    curl_setopt($curlobj,CURLOPT_COOKIEFILE,"cookiefile");
    curl_setopt($curlobj,CURLOPT_COOKIEJAR,"cookiefile");
    curl_setopt($curlobj,CURLOPT_COOKIE,session_name().'='.session_id());
    curl_setopt($curlobj,CURLOPT_HEADER,0);
    curl_setopt($curlobj,CURLOPT_FOLLOWLOCATION,1);//让CURL支持页面跳转

//------------------------------------------------------------------------------------
/**
 * 实例描述：从FTP服务器下载一个文件到本地
 */
$curlobj = curl_init(); 
curl_setopt($curlobj, CURLOPT_URL, "ftp://192.168.1.100/downloaddemo.txt");  
curl_setopt($curlobj, CURLOPT_HEADER, 0); 
curl_setopt($curlobj, CURLOPT_RETURNTRANSFER, 1);  
curl_setopt($curlobj, CURLOPT_TIMEOUT, 300); // times out after 300s
curl_setopt($curlobj, CURLOPT_USERPWD, "peter.zhou:123456");//FTP用户名：密码
// Sets up the output file
$outfile = fopen('dest.txt', 'wb');//保存到本地的文件名
curl_setopt($curlobj, CURLOPT_FILE, $outfile);

$rtn = curl_exec($curlobj);  
fclose($outfile); 
if(!curl_errno($curlobj)){
    // $info = curl_getinfo($curlobj); 
    // print_r($info);
    echo "RETURN: " . $rtn;  
} else {
  echo 'Curl error: ' . curl_error($curlobj);
}
curl_close($curlobj);

//------------------------------------------------------------------------------------
/**
 * 代码实例-PHP-cURL实战
 * 实例描述：把本地文件上传到FTP服务器上
 */
$curlobj = curl_init(); 
$localfile = 'ftp01.php';
$fp = fopen($localfile, 'r');

curl_setopt($curlobj, CURLOPT_URL, "ftp://192.168.1.100/ftp01_uploaded.php");  
curl_setopt($curlobj, CURLOPT_HEADER, 0); 
curl_setopt($curlobj, CURLOPT_RETURNTRANSFER, 1);  
curl_setopt($curlobj, CURLOPT_TIMEOUT, 300); // times out after 300s
curl_setopt($curlobj, CURLOPT_USERPWD, "peter.zhou:123456");//FTP用户名：密码

curl_setopt($curlobj, CURLOPT_UPLOAD, 1);
curl_setopt($curlobj, CURLOPT_INFILE, $fp);
curl_setopt($curlobj, CURLOPT_INFILESIZE, filesize($localfile));
$rtn = curl_exec($curlobj);  
fclose($fp); 
if(!curl_errno($curlobj)){
    echo "Uploaded successfully.";  
} else {
  echo 'Curl error: ' . curl_error($curlobj);
}
curl_close($curlobj);

//------------------------------------------------------------------------------------
/**
 * 代码实例-PHP-CURL下载文件或者图片
*$url:远程图片路径或文件路径
*$path:本地下载路径
 */
public function download($url, $path = 'images/')
{
        $ch = curl_init();
        curl_setopt($ch, CURLOPT_URL, $url);
        curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
        curl_setopt($ch, CURLOPT_CONNECTTIMEOUT, 30);
        $file = curl_exec($ch);
        curl_close($ch);
        $filename = pathinfo($url, PATHINFO_BASENAME);
        $resource = fopen($path . $filename, 'a');
        fwrite($resource, $file);
        fclose($resource);
}