curlDownload()
curlDownload(string $remote, string $local) : mixed
采集远程文件
Parameters
| string | $remote | 远程文件名 |
| string | $local | 本地保存文件名 |
Http 工具类 提供一系列的Http方法
fsockopenDownload(string $url, array $conf = array()) : mixed
使用 fsockopen 通过 HTTP 协议直接访问(采集)远程文件 如果主机或服务器没有开启 CURL 扩展可考虑使用 fsockopen 比 CURL 稍慢,但性能稳定
| string | $url | 远程URL |
| array | $conf | 其他配置信息 int limit 分段读取字符个数 string post post的内容,字符串或数组,key=value&形式 string cookie 携带cookie访问,该参数是cookie内容 string ip 如果该参数传入,$url将不被使用,ip访问优先 int timeout 采集超时时间 bool block 是否阻塞访问,默认为true |
<?php
// +----------------------------------------------------------------------
// | ThinkPHP [ WE CAN DO IT JUST THINK IT ]
// +----------------------------------------------------------------------
// | Copyright (c) 2009 http://thinkphp.cn All rights reserved.
// +----------------------------------------------------------------------
// | Licensed ( http://www.apache.org/licenses/LICENSE-2.0 )
// +----------------------------------------------------------------------
// | Author: liu21st <liu21st@gmail.com>
// +----------------------------------------------------------------------
namespace Org\Net;
/**
* Http 工具类
* 提供一系列的Http方法
* @author liu21st <liu21st@gmail.com>
*/
class Http
{
/**
* 采集远程文件
* @access public
* @param string $remote 远程文件名
* @param string $local 本地保存文件名
* @return mixed
*/
public static function curlDownload($remote, $local)
{
$cp = curl_init($remote);
$fp = fopen($local, "w");
curl_setopt($cp, CURLOPT_FILE, $fp);
curl_setopt($cp, CURLOPT_HEADER, 0);
curl_exec($cp);
curl_close($cp);
fclose($fp);
}
/**
* 使用 fsockopen 通过 HTTP 协议直接访问(采集)远程文件
* 如果主机或服务器没有开启 CURL 扩展可考虑使用
* fsockopen 比 CURL 稍慢,但性能稳定
* @static
* @access public
* @param string $url 远程URL
* @param array $conf 其他配置信息
* int limit 分段读取字符个数
* string post post的内容,字符串或数组,key=value&形式
* string cookie 携带cookie访问,该参数是cookie内容
* string ip 如果该参数传入,$url将不被使用,ip访问优先
* int timeout 采集超时时间
* bool block 是否阻塞访问,默认为true
* @return mixed
*/
public static function fsockopenDownload($url, $conf = array())
{
$return = '';
if (!is_array($conf)) {
return $return;
}
$matches = parse_url($url);
!isset($matches['host']) && $matches['host'] = '';
!isset($matches['path']) && $matches['path'] = '';
!isset($matches['query']) && $matches['query'] = '';
!isset($matches['port']) && $matches['port'] = '';
$host = $matches['host'];
$path = $matches['path'] ? $matches['path'] . ($matches['query'] ? '?' . $matches['query'] : '') : '/';
$port = !empty($matches['port']) ? $matches['port'] : 80;
$conf_arr = array(
'limit' => 0,
'post' => '',
'cookie' => '',
'ip' => '',
'timeout' => 15,
'block' => true,
);
foreach (array_merge($conf_arr, $conf) as $k => $v) {
${$k} = $v;
}
if ($post) {
if (is_array($post)) {
$post = http_build_query($post);
}
$out = "POST $path HTTP/1.0\r\n";
$out .= "Accept: */*\r\n";
//$out .= "Referer: $boardurl\r\n";
$out .= "Accept-Language: zh-cn\r\n";
$out .= "Content-Type: application/x-www-form-urlencoded\r\n";
$out .= "User-Agent: $_SERVER[HTTP_USER_AGENT]\r\n";
$out .= "Host: $host\r\n";
$out .= 'Content-Length: ' . strlen($post) . "\r\n";
$out .= "Connection: Close\r\n";
$out .= "Cache-Control: no-cache\r\n";
$out .= "Cookie: $cookie\r\n\r\n";
$out .= $post;
} else {
$out = "GET $path HTTP/1.0\r\n";
$out .= "Accept: */*\r\n";
//$out .= "Referer: $boardurl\r\n";
$out .= "Accept-Language: zh-cn\r\n";
$out .= "User-Agent: $_SERVER[HTTP_USER_AGENT]\r\n";
$out .= "Host: $host\r\n";
$out .= "Connection: Close\r\n";
$out .= "Cookie: $cookie\r\n\r\n";
}
$fp = @fsockopen(($ip ? $ip : $host), $port, $errno, $errstr, $timeout);
if (!$fp) {
return '';
} else {
stream_set_blocking($fp, $block);
stream_set_timeout($fp, $timeout);
@fwrite($fp, $out);
$status = stream_get_meta_data($fp);
if (!$status['timed_out']) {
while (!feof($fp)) {
if (($header = @fgets($fp)) && ("\r\n" == $header || "\n" == $header)) {
break;
}
}
$stop = false;
while (!feof($fp) && !$stop) {
$data = fread($fp, (0 == $limit || $limit > 8192 ? 8192 : $limit));
$return .= $data;
if ($limit) {
$limit -= strlen($data);
$stop = $limit <= 0;
}
}
}
@fclose($fp);
return $return;
}
}
/**
* 下载文件
* 可以指定下载显示的文件名，并自动发送相应的Header信息
* 如果指定了content参数，则下载该参数的内容
* @static
* @access public
* @param string $filename 下载文件名
* @param string $showname 下载显示的文件名
* @param string $content 下载的内容
* @param integer $expire 下载内容浏览器缓存时间
* @return void
*/
public static function download($filename, $showname = '', $content = '', $expire = 180)
{
if (is_file($filename)) {
$length = filesize($filename);
} elseif (is_file(UPLOAD_PATH . $filename)) {
$filename = UPLOAD_PATH . $filename;
$length = filesize($filename);
} elseif ('' != $content) {
$length = strlen($content);
} else {
E($filename . L('下载文件不存在！'));
}
if (empty($showname)) {
$showname = $filename;
}
$showname = self::get_basename($showname);;
if (!empty($filename)) {
$finfo = new \finfo(FILEINFO_MIME);
$type = $finfo->file($filename);
} else {
$type = "application/octet-stream";
}
//发送Http Header信息 开始下载
header("Pragma: public");
header("Cache-control: max-age=" . $expire);
//header('Cache-Control: no-store, no-cache, must-revalidate');
header("Expires: " . gmdate("D, d M Y H:i:s", time() + $expire) . "GMT");
header("Last-Modified: " . gmdate("D, d M Y H:i:s", time()) . "GMT");
header("Content-Disposition: attachment; filename=" . $showname);
header("Content-Length: " . $length);
header("Content-type: " . $type);
header('Content-Encoding: none');
header("Content-Transfer-Encoding: binary");
// 清空文件的头部信息，解决文件下载无法打开问题
ob_clean(); // 清空缓冲区
flush(); // 刷新输出缓冲
if ('' == $content) {
readfile($filename);
} else {
echo ($content);
}
exit();
}
/**
* 获取文件的名称，兼容中文名
* @return string
*/
static public function get_basename($filename){
return preg_replace('/^.+[\\\\\\/]/', '', $filename);
}
/**
* 显示HTTP Header 信息
* @return string
*/
public static function getHeaderInfo($header = '', $echo = true)
{
ob_start();
$headers = getallheaders();
if (!empty($header)) {
$info = $headers[$header];
echo ($header . ':' . $info . "\n");
} else {
foreach ($headers as $key => $val) {
echo ("$key:$val\n");
}
}
$output = ob_get_clean();
if ($echo) {
echo (nl2br($output));
} else {
return $output;
}
}
/**
* HTTP Protocol defined status codes
* @param int $num
*/
public static function sendHttpStatus($code)
{
static $_status = array(
// Informational 1xx
100 => 'Continue',
101 => 'Switching Protocols',
// Success 2xx
200 => 'OK',
201 => 'Created',
202 => 'Accepted',
203 => 'Non-Authoritative Information',
204 => 'No Content',
205 => 'Reset Content',
206 => 'Partial Content',
// Redirection 3xx
300 => 'Multiple Choices',
301 => 'Moved Permanently',
302 => 'Found', // 1.1
303 => 'See Other',
304 => 'Not Modified',
305 => 'Use Proxy',
// 306 is deprecated but reserved
307 => 'Temporary Redirect',
// Client Error 4xx
400 => 'Bad Request',
401 => 'Unauthorized',
402 => 'Payment Required',
403 => 'Forbidden',
404 => 'Not Found',
405 => 'Method Not Allowed',
406 => 'Not Acceptable',
407 => 'Proxy Authentication Required',
408 => 'Request Timeout',
409 => 'Conflict',
410 => 'Gone',
411 => 'Length Required',
412 => 'Precondition Failed',
413 => 'Request Entity Too Large',
414 => 'Request-URI Too Long',
415 => 'Unsupported Media Type',
416 => 'Requested Range Not Satisfiable',
417 => 'Expectation Failed',
// Server Error 5xx
500 => 'Internal Server Error',
501 => 'Not Implemented',
502 => 'Bad Gateway',
503 => 'Service Unavailable',
504 => 'Gateway Timeout',
505 => 'HTTP Version Not Supported',
509 => 'Bandwidth Limit Exceeded',
);
if (isset($_status[$code])) {
header('HTTP/1.1 ' . $code . ' ' . $_status[$code]);
}
}
} //类定义结束