这篇文章将为大家详细讲解有关php中http请求类的示例分析，小编觉得挺实用的，因此分享给大家做个参考，希望大家阅读完这篇文章后可以有所收获。
代码：
<?php namespace dollarphp; class http{ public $timeout = 5; # 超时时间，默认5秒 public $depth = 3; # 重定向深度，默认3 public $name = 'file'; # 上传文件的名字，默认file public $cookie = 'cookie.txt'; # 模拟登录时cookie存储在本地的文件，默认cookie_n private $scheme = ''; private $host = ''; private $path = ''; private $query = ''; private $options = array(); private $ch; private $fp; private $progress = false; private function setget($data){ $scheme = $this->scheme; $host = $this->host; $path = $this->path; $query = $this->query; $sep = ($query || !empty($data))?"?":""; $qurl = $scheme.'://'.$host.$path.$sep.$query.$data; $this->options[CURLOPT_URL] = $qurl; return $this; } private function setpost($data){ $scheme = $this->scheme; $host = $this->host; $path = $this->path; $query = $this->query; $sep = $query?"?":""; $qurl = $scheme.'://'.$host.$path.$sep.$query; $this->options[CURLOPT_URL] = $qurl; $this->options[CURLOPT_POST] = 1; $this->options[CURLOPT_POSTFIELDS] = $data; return $this; } private function setopt(){ $options = $this->options; curl_setopt_array( $this->ch, $options ); return $this; } public function __construct($url){ $info = parse_url($url); $this->scheme = $info['scheme']?:'http'; $this->host = $info['host']; $this->path = $info['path']; $this->query = $info['query']; $this->ch = curl_init(); $this->options[CURLOPT_CONNECTTIMEOUT] = $this->timeout; $this->options[CURLOPT_RETURNTRANSFER] = 1; $this->options[CURLOPT_FOLLOWLOCATION] = 1; $this->options[CURLINFO_HEADER_OUT] = true; $this->options[CURLOPT_ENCODING] = 'gzip'; $this->options[CURLOPT_MAXREDIRS] = $this->depth; } public function ssl($bool = false){ if($bool){ $this->scheme = 'https'; $this->options[CURLOPT_SSL_VERIFYHOST] = 1; $this->options[CURLOPT_SSL_VERIFYPEER] = false; } return $this; } public function auth($user,$pass){ $this->options[CURLOPT_USERPWD] = $user.':'.$pass; return $this; } public function login(){ $cookie = $this->cookie; $this->options[CURLOPT_COOKIEJAR] = $cookie; $this->options[CURLOPT_RETURNTRANSFER] = 0; return $this; } public function cookie(){ $cookie = $this->cookie; $this->options[CURLOPT_COOKIEFILE] = $cookie; return $this; } public function header($data){ $this->options[CURLOPT_HTTPHEADER] = $this->options[CURLOPT_HTTPHEADER]?:array(); $this->options[CURLOPT_HTTPHEADER] = array_merge($this->options[CURLOPT_HTTPHEADER],$data); return $this; } public function proxy($url,$port){ $info = parse_url($url); $scheme = $info['scheme']?:'http'; $host = $info['host']; $path = $info['path']; $purl = $scheme.'://'.$host.$path.':'.$port; $this->options[CURLOPT_PROXY] = $purl; return $this; } public function agent($browse = 'Mozilla/5.0 (Windows NT 10.0; WOW64) AppleWebKit/537.36 (KHTML, like Gecko)'){ $this->options[CURLOPT_USERAGENT] = $browse; return $this; } public function get($data = array()){ $data = http_build_query($data); $this->setget($data); return $this; } public function post($data = array()){ $this->setpost($data); return $this; } public function json($data = array()){ $data = json_encode($data); $header = array( 'Content-Type: application/json', 'Content-Length:' . strlen($data) ); $this->header($header); $this->setpost($data); return $this; } public function upload($files){ $this->progress = true; $data = array(); $name = $this->name; if(is_array($files)){ foreach($files as $k=>$v){ $data["{$name}[{$k}]"]=new \CURLFile($v); } }else{ $data["{$name}"]=new \CURLFile($files); } ob_start(); echo ">>"; ob_flush(); flush(); $last = 0; $diff = 0; $this->options[CURLOPT_PROGRESSFUNCTION] = function($source,$dfilesize,$downsize,$upsize,$ufilesize){ global $last; global $diff; if($ufilesize > 0){ $percent = round($ufilesize/$upsize*100,2); $diff += $percent - $last; if($diff > 1){ echo "#"; $diff = 0; } $last = $percent; } ob_flush(); flush(); }; $this->options[CURLOPT_NOPROGRESS] = false; $this->setpost($data); return $this; } public function download($dir = ''){ $this->progress = true; $path = $this->path; if($dir && !is_dir($dir)){ mkdir($dir,0755,true); } $name = strrchr($path, '/'); $dsep = $dir?'/':''; ob_start(); echo ">>"; ob_flush(); flush(); $this->fp=fopen('.'.$dsep.$dir.$name, 'w'); $last = 0; $diff = 0; $this->options[CURLOPT_PROGRESSFUNCTION] = function($source,$dfilesize,$downsize,$upsize,$ufilesize){ global $last; global $diff; if($dfilesize > 0){ $percent = round($downsize/$dfilesize*100,2); $diff += $percent - $last; if($diff > 1){ echo "#"; $diff = 0; } $last = $percent; } ob_flush(); flush(); }; $this->options[CURLOPT_NOPROGRESS] = false; $this->options[CURLOPT_FILE] = $this->fp; $this->setget(''); return $this; } public function run(){ $ch = $this->ch; $this->setopt(); $ret = curl_exec($ch); curl_close($ch); if($this->progress){ if($this->fp){ fclose($this->fp); } echo "#<<done"; ob_flush(); flush(); } return $ret; } public function info(){ $ch = $this->ch; $this->setopt(); curl_exec($ch); $ret = curl_getinfo($ch); curl_close($ch); if($this->fp){ fclose($this->fp); } return $ret; } }测试：
$http = new http('www.baidu.com'); $ret = $http->ssl(true)->get()->run(); echo $ret;输出：
<!DOCTYPE html><!--STATUS OK--> <html> <head> <meta http-equiv="content-type" content="text/html;charset=utf-8"> <meta http-equiv="X-UA-Compatible" content="IE=Edge"> <link rel="dns-prefetch" href="//s1.bdstatic.com"/> <link rel="dns-prefetch" href="//t1.baidu.com"/> <link rel="dns-prefetch" href="//t2.baidu.com"/> <link rel="dns-prefetch" href="//t3.baidu.com"/> <link rel="dns-prefetch" href="//t10.baidu.com"/> <link rel="dns-prefetch" href="//t11.baidu.com"/> <link rel="dns-prefetch" href="//t12.baidu.com"/> <link rel="dns-prefetch" href="//b1.bdstatic.com"/> <title>百度一下，你就知道</title> <link href="https://ss1.bdstatic.com/5eN1bjq8AAUYm2zgoY3K/r/www/cache/static/home/css/index.css" rel="stylesheet" type="text/css" /> <!--[if lte IE 8]><style index="index" >#content{height:480px\9}#m{top:260px\9}</style><![endif]--> <!--[if IE 8]><style index="index" >#u1 a.mnav,#u1 a.mnav:visited{font-family:simsun}</style><![endif]--> <script>var hashMatch = 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class="bg s_btn" onmousedown="this.className='bg s_btn s_btn_h'" onmouseout="this.className='bg s_btn'"></span><span class="tools"><span id="mHolder"><div id="mCon"><span>输入法</span></div><ul id="mMenu"><li><a href="javascript:;" name="ime_hw">手写</a></li><li><a href="javascript:;" name="ime_py">拼音</a></li><li class="ln"></li><li><a href="javascript:;" name="ime_cl">关闭</a></li></ul></span><span class="shouji"><strong>推荐 : </strong><a href="http://w.x.baidu.com/go/mini/8/10000020" onmousedown="return ns_c({'fm':'behs','tab':'bdbrowser'})">百度浏览器，打开网页快2秒！</a></span></span></form></div><div id="content"><div id="u1"><a href="http://news.baidu.com" name="tj_trnews" class="mnav">新闻</a><a href="http://www.hao123.com" name="tj_trhao123" class="mnav">hao123</a><a href="http://map.baidu.com" name="tj_trmap" class="mnav">地图</a><a href="http://v.baidu.com" name="tj_trvideo" class="mnav">视频</a><a href="http://tieba.baidu.com" name="tj_trtieba" class="mnav">贴吧</a><a 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class="tools"><span id="mHolder1"><div id="mCon1"><span>输入法</span></div></span></span><ul id="mMenu1"><div class="mMenu1-tip-arrow"><em></em><ins></ins></div><li><a href="javascript:;" name="ime_hw">手写</a></li><li><a href="javascript:;" name="ime_py">拼音</a></li><li class="ln"></li><li><a href="javascript:;" name="ime_cl">关闭</a></li></ul></div><p id="lk"><a href="http://baike.baidu.com">百科</a> <a href="http://wenku.baidu.com">文库</a> <a href="http://www.hao123.com">hao123</a><span> | <a href="//www.baidu.com/more/">更多>></a></span></p><p id="lm"></p></div></div><div id="ftCon"><div id="ftConw"><p id="lh"><a id="seth" onClick="h(this)" href="/" onmousedown="return ns_c({'fm':'behs','tab':'homepage','pos':0})">把百度设为主页</a><a id="setf" href="//www.baidu.com/cache/sethelp/index.html" onmousedown="return ns_c({'fm':'behs','tab':'favorites','pos':0})" target="_blank">把百度设为主页</a><a onmousedown="return ns_c({'fm':'behs','tab':'tj_about'})" href="http://home.baidu.com">关于百度</a><a 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