php远程请求CURL实例教程（爬虫、保存登录状态）

/**
 * curl_get
 * @param $url
 * @param null $param
 * @param null $options
 * @return array
 */
function curl_get($url,$param = null,$options = null){
 if(empty($options)){
  $options = array(
   'timeout' 		=> 30,// 请求超时
   'header' 		=> array(),
   'cookie' 		=> '',// cookie字符串，浏览器直接复制即可
   'cookie_file' => '',// 文件路径,并要有读写权限的
   'ssl' 			=> 0,// 是否检查https协议
   'referer' 		=> null
  );
 }else{
  empty($options['timeout']) && $options['timeout'] = 30;
  empty($options['ssl']) && $options['ssl']	= 0;
 }
 $result = array(
  'code'  => 0,
  'msg'  => 'success',
  'body'  => ''
 );
 if(is_array($param)){
  $param = http_build_query($param);
 }
 $url = strstr($url,'"CURL Error:".curl_error($ch);
 }
 $result['body'] = $output;
 //释放curl句柄
 curl_close($ch);
 return $result;
}

/**
 * curl_post
 * @param $url    请求地址
 * @param null $param  get参数
 * @param array $options 配置参数
 * @return array
 */
function curl_post($url,$param = null,$options = array()){
 if(empty($options)){
  $options = array(
   'timeout' 		=> 30,
   'header' 		=> array(),
   'cookie' 		=> '',
   'cookie_file' => '',
   'ssl' 			=> 0,
   'referer' 		=> null
  );
 }else{
  empty($options['timeout']) && $options['timeout'] = 30;
  empty($options['ssl']) && $options['ssl']	= 0;
 }

 $result = array(
  'code'  => 0,
  'msg'  => 'success',
  'body'  => ''
 );
 if(is_array($param)){
  $param = http_build_query($param);
 }
 $ch = curl_init();
 curl_setopt($ch, CURLOPT_URL, $url);// 设置url
 !empty($options['header']) && curl_setopt($ch, CURLOPT_HTTPHEADER, $options['header']); // 设置请求头
 if(!empty($options['cookie_file']) && file_exists($options['cookie_file'])){
  curl_setopt($ch, CURLOPT_COOKIEFILE, $options['cookie_file']);
  curl_setopt($ch, CURLOPT_COOKIEJAR, $options['cookie_file']);
 }else if(!empty($options['cookie'])){
  curl_setopt($ch, CURLOPT_COOKIE, $options['cookie']);
 }


 curl_setopt($ch, CURLOPT_ENCODING, 'gzip'); //curl解压gzip页面内容
 curl_setopt($ch, CURLOPT_POST, 1);
 curl_setopt($ch, CURLOPT_POSTFIELDS, $param);
 curl_setopt($ch, CURLOPT_HEADER, 0);// 不获取请求头
 curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);// 输出转移，不输出页面
 !$options['ssl'] && curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, $options['ssl']); // 禁止服务器端的验证ssl
 !empty($options['referer']) && curl_setopt($ch, CURLOPT_REFERER, $options['referer']);//伪装请求来源，绕过防盗
 curl_setopt($ch, CURLOPT_TIMEOUT, $options['timeout']);
 //执行并获取内容
 $output = curl_exec($ch);
 //对获取到的内容进行操作
 if($output === FALSE ){
  $result['code'] = 1; // 错误
  $result['msg'] = "CURL Error:".curl_error($ch);
 }
 $result['body'] = $output;
 //释放curl句柄
 curl_close($ch);
 return $result;
}