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342 lines
11 KiB
342 lines
11 KiB
<?php
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/**
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* HTTP访问类
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*/
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namespace libraries;
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class Http {
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/**
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* 访问方式
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* @var integer
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*/
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static public $way = 0;
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/**
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* 设置访问方式
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* @param integer $way 访问方式
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*/
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static public function setWay($way) {
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self::$way=intval($way);
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}
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/**
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* 自动获取访问方法
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* @return integer
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*/
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static public function getSupport() {
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//如果指定访问方式，则按指定的方式去访问
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if( isset(self::$way) && in_array(self::$way, array(1,2,3)) ) return self::$way;
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//自动获取最佳访问方式
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if(function_exists('curl_init')){
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//curl方式
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return 1;
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} else if(function_exists('fsockopen')){
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//socket
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return 2;
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} else if(function_exists('file_get_contents')){
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//php系统函数file_get_contents
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return 3;
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} else {
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return 0;
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}
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}
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/**
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* GET数据
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* @param string $url 访问地址
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* @param integer $timeout 超时秒
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* @param string $header 头信息
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* @return string
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*/
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static public function doGet($url,$timeout=5,$header="") {
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if(empty($url)||empty($timeout))
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return false;
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if(!preg_match('/^(http|https)/is',$url))
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$url="http://".$url;
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$code=self::getSupport();
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switch($code)
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{
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case 1:return self::curlGet($url,$timeout,$header);break;
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case 2:return self::socketGet($url,$timeout,$header);break;
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case 3:return self::phpGet($url,$timeout,$header);break;
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default:return false;
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}
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}
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/**
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* POST数据
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* @param string $url 发送地址
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* @param array $post_data 发送数组
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* @param integer $timeout 超时秒
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* @param string $header 头信息
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* @return string
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*/
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static public function doPost($url, $post_data=array(), $timeout=5,$header="") {
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if(empty($url)||empty($post_data)||empty($timeout))
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return false;
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if(!preg_match('/^(http|https)/is',$url))
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$url="http://".$url;
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$code=self::getSupport();
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switch($code)
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{
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case 1:return self::curlPost($url,$post_data,$timeout,$header);break;
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case 2:return self::socketPost($url,$post_data,$timeout,$header);break;
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case 3:return self::phpPost($url,$post_data,$timeout,$header);break;
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default:return false;
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}
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}
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/**
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* CURL GET数据
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* @param string $url 访问地址
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* @param integer $timeout 超时秒
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* @param string $header 头信息
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* @return string
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*/
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static public function curlGet($url,$timeout=5,$header="") {
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$header=empty($header)?self::defaultHeader():$header;
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$ch = curl_init();
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if(stripos($url,"https://")!==FALSE){
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curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, FALSE);
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curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, FALSE);
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curl_setopt($ch, CURLOPT_SSLVERSION, 1); //CURL_SSLVERSION_TLSv1
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}
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curl_setopt($ch, CURLOPT_URL, $url);
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curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
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curl_setopt($ch, CURLOPT_CONNECTTIMEOUT, $timeout);
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curl_setopt($ch, CURLOPT_TIMEOUT, $timeout);
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curl_setopt($ch, CURLOPT_HTTPHEADER, array($header));//模拟的header头
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$result = curl_exec($ch);
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curl_close($ch);
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return $result;
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}
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/**
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* CURL POST数据
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* @param string $url 发送地址
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* @param array $post_data 发送数组
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* @param integer $timeout 超时秒
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* @param string $header 头信息
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* @return string
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*/
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static public function curlPost($url, $post_data=array(), $timeout=5,$header="", $data_type = "") {
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$header=empty($header)?'':$header;
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//支持json数据数据提交
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if($data_type == 'json'){
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$post_string = json_encode($post_data);
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}
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else if(is_array($post_data)){
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$post_string = http_build_query($post_data, '', '&');
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}else {
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$post_string = $post_data;
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}
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$ch = curl_init();
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if(stripos($url,"https://")!==FALSE){
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curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, FALSE);
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curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, FALSE);
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curl_setopt($ch, CURLOPT_SSLVERSION, 1); //CURL_SSLVERSION_TLSv1
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}
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curl_setopt($ch, CURLOPT_POST, true);
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curl_setopt($ch, CURLOPT_POSTFIELDS, $post_string);
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curl_setopt($ch, CURLOPT_URL, $url);
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curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
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curl_setopt($ch, CURLOPT_CONNECTTIMEOUT, $timeout);
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curl_setopt($ch, CURLOPT_TIMEOUT, $timeout);
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curl_setopt($ch, CURLOPT_HTTPHEADER, array($header));//模拟的header头
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$result = curl_exec($ch);
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curl_close($ch);
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return $result;
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}
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/**
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* socket GET数据
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* @param string $url 访问地址
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* @param integer $timeout 超时秒
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* @param string $header 头信息
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* @return string
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*/
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static public function socketGet($url,$timeout=5,$header="") {
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$header=empty($header)?self::defaultHeader():$header;
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$url2 = parse_url($url);
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$url2["path"] = isset($url2["path"])? $url2["path"]: "/" ;
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$url2["port"] = isset($url2["port"])? $url2["port"] : 80;
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$url2["query"] = isset($url2["query"])? "?".$url2["query"] : "";
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$host_ip = @gethostbyname($url2["host"]);
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if(($fsock = fsockopen($host_ip, $url2['port'], $errno, $errstr, $timeout)) < 0){
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return false;
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}
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$request = $url2["path"] .$url2["query"];
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$in = "GET " . $request . " HTTP/1.0\r\n";
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if(false===strpos($header, "Host:"))
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{
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$in .= "Host: " . $url2["host"] . "\r\n";
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}
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$in .= $header;
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$in .= "Connection: Close\r\n\r\n";
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if(!@fwrite($fsock, $in, strlen($in))){
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@fclose($fsock);
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return false;
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}
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return self::GetHttpContent($fsock);
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}
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/**
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* socket POST数据
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* @param string $url 发送地址
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* @param array $post_data 发送数组
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* @param integer $timeout 超时秒
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* @param string $header 头信息
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* @return string
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*/
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static public function socketPost($url, $post_data=array(), $timeout=5,$header="") {
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$header=empty($header)?self::defaultHeader():$header;
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$post_string = http_build_query($post_data);
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$url2 = parse_url($url);
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$url2["path"] = ($url2["path"] == "" ? "/" : $url2["path"]);
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$url2["port"] = ($url2["port"] == "" ? 80 : $url2["port"]);
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$host_ip = @gethostbyname($url2["host"]);
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$fsock_timeout = $timeout; //超时时间
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if(($fsock = fsockopen($host_ip, $url2['port'], $errno, $errstr, $fsock_timeout)) < 0){
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return false;
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}
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$request = $url2["path"].($url2["query"] ? "?" . $url2["query"] : "");
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$in = "POST " . $request . " HTTP/1.0\r\n";
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$in .= "Host: " . $url2["host"] . "\r\n";
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$in .= $header;
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$in .= "Content-type: application/x-www-form-urlencoded\r\n";
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$in .= "Content-Length: " . strlen($post_string) . "\r\n";
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$in .= "Connection: Close\r\n\r\n";
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$in .= $post_string . "\r\n\r\n";
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unset($post_string);
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if(!@fwrite($fsock, $in, strlen($in))){
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@fclose($fsock);
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return false;
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}
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return self::GetHttpContent($fsock);
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}
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/**
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* file_get_contents GET数据
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* @param string $url 访问地址
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* @param integer $timeout 超时秒
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* @param string $header 头信息
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* @return string
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*/
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static public function phpGet($url,$timeout=5,$header="") {
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$header=empty($header)?self::defaultHeader():$header;
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$opts = array(
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'http'=>array(
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'protocol_version'=>'1.0', //http协议版本(若不指定php5.2系默认为http1.0)
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'method'=>"GET",//获取方式
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'timeout' => $timeout ,//超时时间
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'header'=> $header)
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);
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$context = stream_context_create($opts);
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return @file_get_contents($url,false,$context);
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}
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/**
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* file_get_contents POST数据
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* @param string $url 发送地址
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* @param array $post_data 发送数组
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* @param integer $timeout 超时秒
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* @param string $header 头信息
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* @return string
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*/
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static public function phpPost($url, $post_data=array(), $timeout=5,$header="") {
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$header=empty($header)?self::defaultHeader():$header;
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$post_string = http_build_query($post_data);
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$header.="Content-length: ".strlen($post_string);
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$opts = array(
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'http'=>array(
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'protocol_version'=>'1.0',//http协议版本(若不指定php5.2系默认为http1.0)
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'method'=>"POST",//获取方式
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'timeout' => $timeout ,//超时时间
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'header'=> $header,
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'content'=> $post_string)
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);
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$context = stream_context_create($opts);
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return @file_get_contents($url,false,$context);
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}
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/**
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* 默认HTTP头
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* @return string
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*/
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static private function defaultHeader() {
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$header="User-Agent:Mozilla/5.0 (Windows; U; Windows NT 5.1; zh-CN; rv:1.9.2.12) Gecko/20101026 Firefox/3.6.12\r\n";
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$header.="Accept:text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8\r\n";
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$header.="Accept-language: zh-cn,zh;q=0.5\r\n";
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$header.="Accept-Charset: GB2312,utf-8;q=0.7,*;q=0.7\r\n";
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return $header;
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}
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/**
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* 获取通过socket方式get和post页面的返回数据
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* @param string
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*/
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static private function GetHttpContent($fsock=null)
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{
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$out = null;
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while($buff = @fgets($fsock, 2048)){
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$out .= $buff;
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}
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fclose($fsock);
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$pos = strpos($out, "\r\n\r\n");
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$head = substr($out, 0, $pos); //http head
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$status = substr($head, 0, strpos($head, "\r\n")); //http status line
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$body = substr($out, $pos + 4, strlen($out) - ($pos + 4));//page body
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if(preg_match("/^HTTP\/\d\.\d\s([\d]+)\s.*$/", $status, $matches))
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{
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if(intval($matches[1]) / 100 == 2)
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{
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return $body;
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}
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else
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{
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return false;
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}
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}
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else
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{
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return false;
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}
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}
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/**
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* 下载文件
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* @param string $filename 文件名
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* @param string $showname 显示文件名
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* @param integer $expire 缓存时间
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* @return boolean
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*/
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static public function download($filename, $showname='',$expire=1800) {
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if(file_exists($filename)&&is_file($filename)) {
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$length = filesize($filename);
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}else {
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die('下载文件不存在！');
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}
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//$finfo = new \finfo(FILEINFO_MIME);
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//$type = $finfo->file($filename);
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$type = pathinfo($filename, PATHINFO_EXTENSION);
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//发送Http Header信息 开始下载
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header("Pragma: public");
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header("Cache-control: max-age=".$expire);
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//header('Cache-Control: no-store, no-cache, must-revalidate');
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header("Expires: " . gmdate("D, d M Y H:i:s",time()+$expire) . "GMT");
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header("Last-Modified: " . gmdate("D, d M Y H:i:s",time()) . "GMT");
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header("Content-Disposition: attachment; filename=".$showname);
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header("Content-Length: ".$length);
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header("Content-type: ".$type);
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header('Content-Encoding: none');
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header("Content-Transfer-Encoding: binary" );
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readfile($filename);
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return true;
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}
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}
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